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Magnetic-Dielectric Synergy in One-Dimensional Metal Heterostructures for Enhanced Low-Frequency Microwave Absorption 认领 引用 被引量：3
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作者 Feiyue Hu Peigen Zhang +10 位作者 Pei Ding Shuo Zhang Bingbing Fan Ali Saffar Shamshirgar Wei Zheng Wenwen Sun Longzhu Cai Haijiao Xie Qiyue Shao Johanna Rosen ZhengMing Sun 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第5期371-390,共20页
Microwave absorption(MA)materials often face poor synergy between impedance matching and attenuation in the low-frequency range.Balancing permittivity and permeability through magnetic-dielectric synergy is a promisin... Microwave absorption(MA)materials often face poor synergy between impedance matching and attenuation in the low-frequency range.Balancing permittivity and permeability through magnetic-dielectric synergy is a promising strategy to address this issue.To realize the synergy,herein,Sn whiskers with an in situ oxide layer served as substrates for magnetic-loss-active CoNi nanosheet growth,forming a hierarchical CoNi@SnO2@Sn(CNS)heterostructure.The CNS absorber achieves a minimum reflection loss(RLmin)value of-62.29 dB with an effective absorption bandwidth(EAB)of 2.2 GHz,covering the entire C-band with 70%absorption at only 2.61 mm thickness.The nanosheet design of CoNi enhances magnetic anisotropy to promote natural resonance,while the conductive Sn core and abundant Sn/SnO2 and CoNi/SnO2 heterointerfaces facilitate conduction loss and dielectric polarization.When composited into a thermoplastic polyurethane(TPU)matrix,the resulting CNS/TPU-2 film(20 wt%CNS)exhibits an RLmin value of-61.04 dB and a 2.5 GHz EAB.Its in-plane and through-plane thermal conductivities reach 2.41 and 0.51 W m-1 K-1,representing 4.1 and 2.6 times those of pure TPU films,respectively,facilitating heat dissipation from protected devices.This work provides valuable insights into magnetic-dielectric synergy for low-frequency MA of 1D metal-based materials,offering promising potential for 5G communications and flexible electronics. 展开更多
关键词 Low frequency microwave absorption Magnetic-dielectric synergy MAX phase CoNi@SnO2@Sn heterostructure Thermal conductivity
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Cation/anion synergy induced(100) plane dense deposition for dendrite-free aqueous zinc-ion batteries 认领 引用 被引量：1
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作者 Jialin Zheng Fang Xu +6 位作者 Ao Wang Zhenjiang Li Mengqin Song Chunyan Xu Cheng Yun Beinuo Zhang Dai-Huo Liu 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第1期709-715,共7页
Aqueous zinc-ion batteries(AZIBs) have advantages including low economic cost and high safety.Nevertheless,the serious hydrogen evolution reactions(HER) and rampant growth of Zn dendrite hinder their further developme... Aqueous zinc-ion batteries(AZIBs) have advantages including low economic cost and high safety.Nevertheless,the serious hydrogen evolution reactions(HER) and rampant growth of Zn dendrite hinder their further development.Herein,potassium acetate(KAc) additive with cation/anion synergy effect is added into the ZnSO4 electrolyte to effectively promote the oriented uniform Zn deposition and suppress side reactions.According to density functional theory calculation and experimental results,CH3COO-(Ac-)anions are capable of forming stronger hydrogen bonds with H2O molecules,leading to an expanded electrochemical stability window,reduced the reactivity of H2O,and hence suppressing HER.Meanwhile,Ac-anions can also preferentially adsorb onto the Zn anode,promoting dense deposition towards the(100) crystal plane.Besides,dissociated K+ ions serve as electrostatic shielding cations,which significantly promote uniform Zn deposition and prevent dendrite formation.Thus,the Zn||Zn symmetric cell demonstrates an impressive cycle lifespan of 3000 h at 1.0 m A/cm2.Furthermore,the Zn||MnO2 full battery exhibits superior stability with a capacity retention of 86.95 % at 2.0 A/g after 4000 cycles.Therefore,the cation/anion synergy effect in KAc additive offers a viable solution to address HER and hinder dendrite growth at the interface of Zn anodes. 展开更多
关键词 Hydrogen bond network Cation/anion synergy (100)plan dense deposition Electrolyte additive Aqueous zinc-ion battery
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Achieving exceptional strength-ductility synergy in additively manufactured Hastelloy X superalloys by stabilizing cellular structures via Ta addition 认领 引用
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作者 Nan Chen Kefu Gan +4 位作者 Dan Zheng Pengda Niu Haoping Peng Tiechui Yuan Ruidi Li 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2026年第2期591-619,共29页
Additive manufacturing of Hastelloy X superalloys remains challenges for practical aerospace applications due to the inadequate mechanical property at both ambient and high temperatures.To this end,this work proposes ... Additive manufacturing of Hastelloy X superalloys remains challenges for practical aerospace applications due to the inadequate mechanical property at both ambient and high temperatures.To this end,this work proposes a novel Ta-modified strategy manipulating elemental segregation to stabilize cellular structures,thereby obtaining an outstanding combination between strength and ductility across a wide temperature regime.In particular,the tensile strength and elongation of Ta-modified superalloys can reach up to 1214 MPa and 28.4%,respectively,highly increased by 47%and 10%compared to original Hastelloy X superalloys at 25℃.Meanwhile,the tensile strength and elongation at 650℃significantly increase to 843 MPa and 26.8%respectively,38%and 150%stronger than their counterparts of the original Ta-free Hastelloy X superalloys at identical conditions.Microstructural observations reveal that prominent local segregation of Ta/Mo elements and in situ MC precipitates along cellular boundaries synergistically enhanced the stability of cellular structures.The stabilized cellular structures serve as continuous and skeleton-like networks during deformation,synergistically contributing to outstanding ductility and enhanced mechanical strength,as well as sustained strain-hardening ability.The present work provides new insights into an efficient alloy design method for additively manufactured nickel-based superalloys with outstanding mechanical property within a wide temperature regime. 展开更多
关键词 additive manufacturing Hastelloy X superalloys cellular structures elemental segregation strength-ductility synergy
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Synergy of Strength and Plasticity in Extruded VZ91K Magnesium Alloy Achieved by Constructing Bimodal Grain Structure via Suppression of PSN-DRX 认领 引用
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作者 Shuai Yuan Xiaohuan Pan +3 位作者 Tianhao Wu Wenjun Ci Baodong Shi Xianhua Chen 《Rare Metals》 SCIE EI CAS CSCD 2026年第7期250-263,共14页
Bimodal grain structure(BGS)demonstrates significant potential in synergistically optimizing the strength and plasticity of magnesium alloys.Acquiring the desired BGS consequently became a critical challenge.This stud... Bimodal grain structure(BGS)demonstrates significant potential in synergistically optimizing the strength and plasticity of magnesium alloys.Acquiring the desired BGS consequently became a critical challenge.This study took the Mg-9Gd-1Zn-0.5Zr(wt%,VZ91K)alloy as its subject.From the perspective of BGS formation mechanisms,it suggests an effective strategy for constructing BGS,revealing the associated microstructural evolution,as well as the strengthening and toughening mechanisms.Research indicates that fully dissolving the micron-sized blocky eutectic phase in the as-cast alloy can significantly suppress the particle-stimulated nucleation-induced dynamic recrystallization(PSN-DRX)that occurs during extrusion,thereby yielding a BGS in the VZ91K alloy.The VZ91K alloy with BGS exhibits a significant enhancement in yield strength compared to homogeneous alloys(194-268 MPa),accompanied by an acceptable decrease in elongation to fracture(24.5%-20.3%).Hetero-deformation-induced(HDI)hardening is the critical factor driving the synergistic strength-plasticity of the VZ91K alloy with BGS.During tensile deformation,the HDI stress and HDI hardening rate of the VZ91K alloy with BGS consistently exceed those of the homogeneous alloy.Additionally,dislocation strengthening,low-angle grain boundary strengthening,LPSO,andγ′phase strengthening are also responsible for the high strength of the VZ91K alloy with BGS.This study presents a novel approach to constructing BGS,which could facilitate its application in the regulation of the mechanical properties of magnesium alloys. 展开更多
关键词 bimodal grain structure dynamic recrystallization HDI strengthening magnesium alloy strength-plasticity synergy
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Dual-strength mechanisms in low-carbon cold-bound pellets:binder synergy and sinter fines recycling for sustainable ironmaking 认领 引用
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作者 Xi-Han Zheng Jun-Ying Wan +5 位作者 Tie-Jun Chen Hao-Ran Zhang Jia-Wen Liu Yu Deng Xian-Lin Zhou Jun Zhuang 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第4期288-302,共15页
In pursuit of more efficient low-carbon ironmaking,fulfilling the requirements of blast furnace materials,four types of low-carbon cold-bound pellets were prepared from blended iron ore,which were dually strengthened ... In pursuit of more efficient low-carbon ironmaking,fulfilling the requirements of blast furnace materials,four types of low-carbon cold-bound pellets were prepared from blended iron ore,which were dually strengthened through sintered return fines and binder.The strengthening mechanism of low-carbon cold-bound pellets was discussed based on the analysis of the characterization results including optical microscopy,scanning electron microscopy-energy dispersive spectroscopy,X-ray diffraction and Fourier transform infrared spectroscopy and the reduction performance detection results.The results demonstrate that,when subjected to external forces,the interlocking of returned fines with blended iron ores leads to the formation of a load-bearing skeleton.During the drying process,the binder is dehydrated and condensed to yield a gel network structure,with which the bonding effect is imposed.In contrast to the organic binder PR,the inorganic binder SS ensures a stabler thermal structure and reduction performance for the cold-bound pellets.The comparison of energy consumption and carbon emissions was estimated before and after introducing cold-bound pellets in the process,and it was ascertained that low-carbon cold-bound pellets are able to foster the low-carbon sustainable ironmaking. 展开更多
关键词 Dual strength Sinter fines recycling Binder synergy Sustainable ironmaking Low-carbon ironmaking
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Enhanced printability,grain refinement and strength-ductility synergy in a Sc modified Mg-Gd alloy fabricated by laser powder bed fusion 认领 引用
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作者 Ziyi Liu Qingchen Deng +6 位作者 Jiacheng Wang Yiwen Ding Ziyan Li Jing Luo Hong Liu Yu Zhang Liming Peng 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2026年第3期195-215,共21页
Additive manufacturing of magnesium alloys provides significant lightweight advantages in aerospace applications.Mg-10Gd-Zr(G10K,wt.%)alloy exhibited promising potential for laser powder bed fusion(LPBF)application,ye... Additive manufacturing of magnesium alloys provides significant lightweight advantages in aerospace applications.Mg-10Gd-Zr(G10K,wt.%)alloy exhibited promising potential for laser powder bed fusion(LPBF)application,yet it still encounters challenges related to a narrow processing window and relatively low mechanical properties.In this study,Scandium(Sc)was introduced in the pre-alloyed powder to develop the Mg-10Gd-1Sc-Zr(GSc101K,wt.%)alloy tailored for LPBF process.The results indicate that the incorporation of Sc has reduced the laser reflectivity by creating micro grooves on the surface of the GSc101K alloy powder,resulting in a significant expansion of the LPBF processing window.Furthermore,the introduction of Sc in the GSc101K alloy has led to remarkable grain refinement and noticeable weakening of texture due to preferential partitioning of Sc into theα-Mg nucleus to reduce the nucleation energy barrier.The LPBF-GSc101K alloy exhibits a superior elongation(El.)of 14%,which is primarily attributed to the refined microstructure and activation of non-basal slip systems resulting from the solid solution of Sc.After a deliberately optimized T6 heat treatment,the UTS of the GSc101K alloy reaches 395 MPa while maintaining a reasonable El.of 4%,achieving a synergistic enhancement in strength and plasticity compared to the G10K alloy.The GSc101K alloy demonstrates exceptional printability,fine and uniform microstructure,and high potential of strengthening through heat treatment,presenting a competitive option for material selection of LPBF-Mg alloys. 展开更多
关键词 Laser powder bed fusion(LPBF) Mg-Gd-Sc alloy Printability Grain refinement Strength-ductility synergy
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Agricultural pollution control and carbon reduction in China:Spatiotemporal heterogeneity,synergy,and drivers 认领 引用
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作者 ZOU Lilin LI Shulin +1 位作者 WANG Yongsheng YUAN Zhongyou 《Journal of Geographical Sciences》 SCIE CSCD 2026年第3期550-574,共25页
Promoting the synergistic governance of pollution control(PC)and carbon reduction(CR)in the agricultural sector was an important way for the Chinese government to implement the“dual carbon”initiative and respond to ... Promoting the synergistic governance of pollution control(PC)and carbon reduction(CR)in the agricultural sector was an important way for the Chinese government to implement the“dual carbon”initiative and respond to climate change.Based on the data of China’s crop production from 31 provincial-level regions from 1997 to 2022,this paper constructs a framework consisting of spatiotemporal evolution,synergy effect measurement,differences in contributions across regions,and influencing factors analysis to reveal the relationship between agricultural PC and CR.The results showed that the annual growth rates of pollutant emissions and carbon emissions were 1.85%and 0.79%,respectively.However,the annual decline rates of their emission intensities were 3.14%and 4.32%,respectively.This indicated that China’s actions to reduce pollution and carbon emissions in agriculture have achieved good results,that the effect of PC was weaker than that of CR and had an obvious“policy node effect.”Simultaneously,the synergy between PC and CR evolved from“basic coordination”to“basic imbalance.”The contribution of inter-regional differences was relatively large,while intra-regional differences were smaller,highlighting the importance of reducing regional disparities in promoting the synergistic governance of PC and CR.The basic conditions,industrial structure,input intensity,and development potential of agricultural development were key factors in widening the coupling coordination gap between PC and CR,and the influence of these significant factors exhibited clear spatiotemporal heterogeneity.These findings have provided important evidence for understanding China’s agricultural environmental governance strategies and could offer experiential insights for developing countries in advancing the coordinated governance of agricultural PC and CR. 展开更多
关键词 pollution control carbon reduction spatiotemporal heterogeneity synergy influencing factors
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How Digital and Green Synergy Empowers Agricultural New Quality Productive Forces:The Logical Framework,Existing Challenges,and Optimization Strategies 认领 引用
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作者 Kuang Yuanpei Yang Peiyu 《Contemporary Social Sciences》 2026年第2期139-155,共17页
New quality productive forces(NQPFs)function as the core engine for driving high-quality development.Advancing the Chinese path to agricultural modernization essentially hinges on the fostering of agricultural NQPFs,w... New quality productive forces(NQPFs)function as the core engine for driving high-quality development.Advancing the Chinese path to agricultural modernization essentially hinges on the fostering of agricultural NQPFs,with the synergy between digital transformation and green transition standing out as a vital pathway toward the realization of this goal.Drawing on system theory,this paper develops a framework for the synergy between digital transformation and green transition and breaks down agricultural NQPFs into three dimensions:components,structures,and functions.We argue that the digital transformation and green transition are able to generate synergies across five key dimensions-technology,factors,philosophy,efficiency,and innovation.The generative logic underpinning this synergy’s empowerment of the agricultural NQPFs unfolds as follows:it generates new productive factors that enhance the component attributes,it innovates modern agricultural systems in the strengthening of structural support,and it cultivates new agricultural technologies,industries,formats,and models that expand functional capacity.Looking ahead,it is imperative to address current challenges,which include the short supply of emerging technologies,the insufficient assetization of data as a production factor,the prominent cognitive contradictions among stakeholders,inadequacies in the governance mechanisms,and the suboptimal industrial integration.Key strategies should focus on innovating the technology supply system,unlocking the potential of the data assets,fostering awareness of the synergy,reinforcing institutional frameworks,and boosting investments toward industrial innovation,thereby robustly advancing the agricultural NQPFs. 展开更多
关键词 agricultural new quality productive forces digital and green synergy generative logic optimization strategies
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Optimal interspecific distance maintains soybean yield by promoting canopy–root synergy in a maize–soybean relay strip cropping system 认领 引用
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作者 Jialin Yang Xinyue Peng +6 位作者 Junbo Ren Xueli Yang Kejing Zhang Yuze Li Tian Pu Wenyu Yang Taiwen Yong 《The Crop Journal》 SCIE CSCD 2026年第2期628-638,共11页
Maize-soybean relay cropping increases land-equivalent ratio,but shading often limits soybean productivity.Optimizing strip relay configurations improves the light environment for soybean,enhancing its photosynthetic ... Maize-soybean relay cropping increases land-equivalent ratio,but shading often limits soybean productivity.Optimizing strip relay configurations improves the light environment for soybean,enhancing its photosynthetic capacity and yield.In a four-year trial,we tested maize-soybean relay strip cropping at interspecific distances of 30,45,60 and 75 cm,and monocropping soybean.We measured photosynthetic characteristics,photosynthate allocation,root traits,nitrogen(N)uptake and yield to elucidate the canopy-root synergy driving spacing-induced yield gains and identify the optimal interspecific distance.Increasing interspecific distance significantly improved canopy transmittance and photosynthetically active radiation(PAR).The 60 cm treatment(MS60)increased transmittance and upregulated leaf antioxidant enzyme activity,thereby enhancing leaf area index,SPAD and net photosynthetic rate.Compared with other relay cropping treatments,MS60 increased13C content and sucrose accumulation by 17.8%-69.7%and 7.1%-34.9%,respectively,and increased N uptake by 20.1%on average.The dual boost in carbon and nitrogen accumulation led to an 11.6%-29.3%yield increase under MS60,with a soybean yield of 1.9 t ha-1that was close to the monocropped soybean yield of 2.1 t ha-1.This yield advantage was attributed to increased canopy radiation and carbon(C)accumulation that increased root development and N uptake.MS60 optimizes the balance between interspecific compensation and intraspecific competition in the relay strip cropping system,increasing maize yield while maintaining soybean yield at monoculture levels. 展开更多
关键词 Maize–soybean intercropping Photosynthetic characteristics Root characteristics Nitrogen uptake Canopy-root synergy
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N-bridged Zn-Ni dual-site single-atom catalysts:Steering cascade transfer hydrogenation via site-specific synergy 认领 引用
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作者 Jiaxin Zhang Na Li +7 位作者 Yao Liu Rongjian Ding Wenwen Lu Chengwen Shang Mengyi Pei Riguang Zhang Yanling Zhai Ting Zhang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第7期807-816,I0019,共10页
The cascade synthesis of imines from alcohols and nitroarenes via catalytic transfer hydrogenation(CTH)is a highly sustainable process.However,developing efficient non-noble metal catalysts remains a formidable challe... The cascade synthesis of imines from alcohols and nitroarenes via catalytic transfer hydrogenation(CTH)is a highly sustainable process.However,developing efficient non-noble metal catalysts remains a formidable challenge due to the kinetic mismatch of sequential reaction steps and sluggish active hydrogen transfer.Herein,we propose a novel spatial functional partitioning catalyst design paradigm and construct a highly efficient diatomic catalyst featuring atomically dispersed ZnN4 and NiN4 sites spatially bridged by nitrogen atoms.Experimental and theoretical investigations reveal a precise dual-site cooperative mechanism of the unique Zn-N-Ni constructure.Specifically,the highly electron-deficient Zn sites(+1.14|e|vs.+0.83|e|of Ni)preferentially activate the hydroxyl group of benzyl alcohol to generate active H* due to a lower dehydrogenation energy barrier(89.6 kJ mol-1 vs.111.6 kJ mol-1 for Ni).Concurrently,the Ni sites,featuring a higher d-band center(–1.47 eV vs.–5.50 eV for Zn),facilitate nitrobenzene hydrogenation with a significantly lower barrier(73.7 kJ mol-1),while the bridging N serves as an H* adsorption site.Consequently,this synergistic configuration integrates single-atom efficiency with dual-site cooperation,achieving 96%nitrobenzene conversion and 90%imine selectivity.This work not only elucidates the atomic-level hydrogen transfer mechanism in cascade reactions but also establishes a rational design principle for complex tandem catalytic systems. 展开更多
关键词 Heterogeneous catalyst Dual-site single-atom catalysts Synergy effect Reduction of nitroarenes Catalytic transfer hydrogenation
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Enhanced strength-ductility-toughness synergy of friction stir-welded ultrahigh-strength medium-Mn steel joints via post-weld annealing 认领 引用
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作者 Leping Wang Zhiwei Wang +7 位作者 Peng Xue Hao Zhang Zhen Zhang Fengchao Liu Lihui Wu Dingrui Ni Bolv Xiao Zongyi Ma 《Metals Advances》 SCIE EI CAS CSCD 2026年第5期44-56,共13页
Ultrahigh-strength medium-Mn steels are one of the promising third-generation advanced high-strength steels with strength-ductility-toughness synergy.However,it has been a challenge to preserve the superior mechanical... Ultrahigh-strength medium-Mn steels are one of the promising third-generation advanced high-strength steels with strength-ductility-toughness synergy.However,it has been a challenge to preserve the superior mechanical properties of ultrahigh-strength medium-Mn steels after fusion welding due to the high heat input-induced transformation of metastable microstructures.In this work,ultrahigh-strength medium-Mn steel plates with 1 GPa strength were joined by a solid-state welding technique—friction stir welding.Defect-free joints were fabricated under a specific parameter window.Transformation of austenite to quenched martensite with high hardness occurred in the nugget zones(NZs).All the as-welded joints exhibited equal strengths but significant losses in ductility compared to the base metal(BM).Moreover,the impact energies of the NZs were greatly reduced to less than 6 J,which induced premature failures of the joints.After post-weld annealing at an intercritical temperature,reverse transformation of austenite occurred in the NZs,producing a composited structure of ultrafine ferrite,martensite,and austenite.The impact energies of the annealed NZs increased to over 23 J,which was much higher than the 2.2 J measured in the as-welded counterparts.The hardness of the NZs was significantly reduced,enabling sizeable tensile elongations of the joints close to that of the BM.Consequently,enhanced strength-ductility-toughness synergy of ultrahigh-strength medium-Mn steel joints was achieved by post-weld annealing.This work demonstrates a viable method to fabricate ultrahigh-strength medium-Mn steel joints with high performance. 展开更多
关键词 Ultrahigh-strength medium-Mn steel Friction stir welding Intercritical annealing Microstructure evolution Strength-ductility-toughness synergy
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Achieving strength-ductility synergy and low mechanical anisotropy in a Mg-Zn based alloy at 77 K via Gd addition and asymmetric extrusion 认领 引用
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作者 Chao Zhang Changjian Yan +7 位作者 Lingyu Zhao Liu Huang Yunchang Xin Xinde Huang Yang Cao Qinghang Wang Zhaoyang Jin Enhou Han 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2026年第7期441-463,共23页
There is a challenge in preparing low-cost Mg-Zn-based alloys with synergistic strength-ductility at cryogenic condition.In the present work,it is found that asymmetric extrusion(ASE)unexpectedly led to texture streng... There is a challenge in preparing low-cost Mg-Zn-based alloys with synergistic strength-ductility at cryogenic condition.In the present work,it is found that asymmetric extrusion(ASE)unexpectedly led to texture strengthening in a Mg-Zn-Gd(ZG21)alloy by promoting a distinct preferred orientation(the[1012]/[10¯11]texture),rather than the expected weakening;such texture component causes a significantly reduced mechanical anisotropy across three loading directions(ED,TD and 45°)of the extruded plate.Moreover,the addition of a small amount of Gadolinium(Gd)combined with asymmetric extrusion also resulted in substantially enhanced mechanical properties:yield strength(YS)increased by 113 MPa(179%increment),ultimate tensile strength(UTS)rose by 75 MPa(20%increment),while achieving a fracture elongation of 14%at 77 K.The enhanced yield strength(YS)originated mainly from grain boundary and texture strengthening,where the latter critically governed mechanical anisotropy.Systematic characterization via EBSD assisted slip-traces,MWH-MWA method based dislocation density calculations,and TEM observations reveals the evolution of,anddislocation densities with strains and intuitive observation of interactions among,anddislocations.The activation of extensive non-basalslip,which exhibits a higher multiplication rate than-type dislocations at higher strains,primarily contributes to the enhanced cryogenic plasticity.This work provides a novel strategy for synergistic cryogenic strength-ductility enhancement in cost-effective Mg-Zn based alloys. 展开更多
关键词 Mg-Zn-Gd alloy Strength-ductility synergy Asymmetric extrusion dislocation Cryogenic temperature
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An Electricity-Carbon Synergy-Driven Optimization Method for Low-Carbon Operation of Multi-Energy Parks 认领 引用
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作者 Jiangyang Yuan Jiaowen Wu +4 位作者 Yi Gao Yuhao Fu Yuntao Bu Tianyu Chen Hao Yu 《Energy Engineering》 EI 2026年第2期38-67,共30页
In the pursuit of carbon peaking and neutrality goals,multi-energy parks,as major energy consumers and carbon emitters,urgently require low-carbon operational strategies.This paper proposes an electricity-carbon syner... In the pursuit of carbon peaking and neutrality goals,multi-energy parks,as major energy consumers and carbon emitters,urgently require low-carbon operational strategies.This paper proposes an electricity-carbon synergy-driven optimization method for the low-carbon operation ofmulti-energy parks.Themethod integratesmultienergy complementary scheduling with a tiered carbon trading mechanism to balance operational security,economic efficiency,and environmental objectives.A mixed-integer linear programming model is developed to characterize the coupling relationships and dynamic behaviors of key equipment,including photovoltaic systems,ground-source heat pumps,thermal storage electric boilers,combined heat and power units,and electrical energy storage systems.Furthermore,a tiered carbon trading model is established that incorporates carbon quota allocation and tiered carbon pricing to internalize carbon costs and discourage high-emission practices.Multi-scenario comparative analyses demonstrate that the electricity-carbon synergy scenario achieves a 42.64%reduction in carbon emissions compared to economy-oriented operation,while limiting the increase in operational costs to 20.85%.The carbon-prioritized scenario further reduces emissions by 9.7%,underscoring the inhibitory effect of the tiered carbon pricing mechanism on highcarbon activities.Sensitivity analyses confirm the model’s robustness against fluctuations in energy load,uncertainty in renewable generation,and variations in carbon price.This optimization method provides theoretical support for multi-energy coordinated scheduling and carbon responsibility allocation in industrial parks,offering valuable insights for promoting green transformation initiatives. 展开更多
关键词 Electricity-carbon synergy multi-energy park mixed-integer programming tiered carbon pricing
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Dual-metal synergy in electrocatalytic urea synthesis:mechanistic study of Fe-doped W18O49(010)for CO2 and NO3−coupling 认领 引用
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作者 DENG Ziyu YANG Ao +1 位作者 ZHU Changyan ZHANG Min 《分子科学学报》 CAS 2026年第1期30-39,共10页
The electrocatalytic co-reduction of carbon dioxide(CO2)and nitrate(NO3−)to urea represents a promising dual-purpose strategy,offering a sustainable alternative to the energy-intensive Bosch-Meiser process wh... The electrocatalytic co-reduction of carbon dioxide(CO2)and nitrate(NO3−)to urea represents a promising dual-purpose strategy,offering a sustainable alternative to the energy-intensive Bosch-Meiser process while simultaneously mitigating environmental pollutants.This study systematically explores the catalytic performance of a series of transition-metal-doped W18O49(010)surfaces(TM-W18O49,TM=Fe,Co,Ni,Cu,Zn)for urea synthesis using first-principles calculations.Among them,Fe-doped W18O49 emerges as the most promising electrocatalyst,exhibiting superior activity with a remarkably low limiting potential of−0.46 V(compared to−0.95 V for pristine W18O49)and outstanding selectivity by effectively suppressing competing nitrate reduction and hydrogen evolution reactions.Mechanistic analysis reveals a heteronuclear dual-metal(TMW)synergistic adsorption mechanism,in which the doped transition metal and adjacent W site collaboratively activate NO3−,thereby facilitating the critical C─N bond formation.This work not only elucidates the reaction pathway and active-site synergy in Fe-W18O49,but also provides a theoretical foundation for the rational design of high-performance bimetallic oxide catalysts towards efficient electrocatalytic urea production. 展开更多
关键词 urea electrosynthesis dual-metal synergy heteronuclear doping C─N coupling
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Resolving the Dilemma of“Employment Apathy”among University Graduates:An Exploration of Paths Based on the Synergy of“Employment-Education” 认领 引用
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作者 Guihong Xie 《Journal of Contemporary Educational Research》 2026年第3期17-22,共6页
In recent years,against the backdrop of economic transformation and structural adjustments in the job market,the phenomenon of“employment apathy”among university graduates has become increasingly prominent,emerging ... In recent years,against the backdrop of economic transformation and structural adjustments in the job market,the phenomenon of“employment apathy”among university graduates has become increasingly prominent,emerging as a critical issue affecting employment quality and the efficiency of talent resource allocation.This phenomenon is characterized by low employment willingness,delayed career decision-making,and poor employment matching.Based on the practical experience of university education,this paper systematically analyzes the multi-dimensional causes of the“employment apathy”dilemma,identifies the core problems in the operation of the existing“employment-education”synergy mechanism,and ultimately proposes targeted optimization paths.It aims to provide practical guidance for universities to tackle the problem of“employment apathy”and enhance the adaptability between talent cultivation and employment. 展开更多
关键词 Employment apathy Employment-education synergy Dilemma resolution Path exploration University career guidance
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A Strategic Framework for the Construction of Regional Industry-Education Integration Communities from the Perspective of Government-University-Enterprise Synergy 认领 引用
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作者 Wenhua Gao 《Proceedings of Business and Economic Studies》 2026年第7期13-21,共9页
As a core driver of high-quality regional economic development in the new era,new productive forces have increasingly become an essential direction for promoting industrial upgrading and talent cultivation.Against the... As a core driver of high-quality regional economic development in the new era,new productive forces have increasingly become an essential direction for promoting industrial upgrading and talent cultivation.Against the backdrop of accelerating regional economic transformation and technological innovation,building regional Government–University–Enterprise synergy communities has emerged as a key pathway for fostering these new productive forces.This paper systematically analyzes the prominent challenges in the process of Government–University–Enterprise synergy,including insufficient collaborative motivation,underdeveloped cooperation mechanisms,and uneven resource allocation.It proposes strategic pathways to address these issues:multi-pronged approaches to stimulate stakeholder participation,demand-driven improvements to enhance cooperation mechanisms,and diversified channels to integrate and optimize resource allocation.By leveraging multi-stakeholder collaboration,institutional innovation,and resource sharing,the framework aims to enhance collaborative innovation capabilities and promote the cultivation of new productive forces and industrial upgrading in regional economies.This research provides both theoretical support and practical reference for deepening Government–University–Enterprise synergy and building regional Government–University–Enterprise synergy communities. 展开更多
关键词 Government–University–Enterprise synergy Regional development Collaborative innovation New productive forces
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Magneto‑Dielectric Synergy and Multiscale Hierarchical Structure Design Enable Flexible Multipurpose Microwave Absorption and Infrared Stealth Compatibility 认领 引用 被引量：18
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作者 Chen Li Leilei Liang +2 位作者 Baoshan Zhang Yi Yang Guangbin Ji 《Nano-Micro Letters》 SCIE EI CAS CSCD 2025年第2期401-416,共16页
Developing advanced stealth devices to cope with radar-infrared(IR)fusion detection and diverse application scenarios is increasingly demanded,which faces significant challenges due to conflicting microwave and IR clo... Developing advanced stealth devices to cope with radar-infrared(IR)fusion detection and diverse application scenarios is increasingly demanded,which faces significant challenges due to conflicting microwave and IR cloaking mechanisms and functional integration limitations.Here,we propose a multiscale hierarchical structure design,integrating wrinkled MXene IR shielding layer and flexible Fe3O4@C/PDMS microwave absorption layer.The top wrinkled MXene layer induces the intensive diffuse reflection effect,shielding IR radiation signals while allowing microwave to pass through.Meanwhile,the permeable microwaves are assimilated into the bottom Fe3O4@C/PDMS layer via strong magneto-electric synergy.Through theoretical and experimental optimization,the assembled stealth devices realize a near-perfect stealth capability in both X-band(8–12 GHz)and long-wave infrared(8–14μm)wavelength ranges.Specifically,it delivers a radar cross-section reduction of−20 dB m2,a large apparent temperature modulation range(ΔT=70℃),and a low average IR emissivity of 0.35.Additionally,the optimal device demonstrates exceptional curved surface conformability,self-cleaning capability(contact angle≈129°),and abrasion resistance(recovery time≈5 s).This design strategy promotes the development of multispectral stealth technology and reinforces its applicability and durability in complex and hostile environments. 展开更多
关键词 Microwave absorption Radar-infrared compatible stealth Wrinkled MXene Magneto-dielectric synergy Multifunction
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Fabrication of carbon nanotube neuromorphic thin film transistor arrays and their applications for flexible olfactory-visual multisensory synergy recognition 认领 引用 被引量：6
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作者 Nianzi Sui Kaixiang Kang +5 位作者 Min Li Dan Zhang Benxiang Li Shuangshuang Shao Hua Wang Jianwen Zhao 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2025年第1期555-565,共11页
Artificial multisensory devices play a key role in human-computer interaction in the field of artificial intelligence(AI).In this work,we have designed and constructed a novel olfactory-visual bimodal neuromorphic car... Artificial multisensory devices play a key role in human-computer interaction in the field of artificial intelligence(AI).In this work,we have designed and constructed a novel olfactory-visual bimodal neuromorphic carbon nanotube thin film transistor(TFT)arrays for artificial olfactory-visual multisensory synergy recognition with a very low power consumption of 25 aJ for a single pulse,employing semiconducting single-walled carbon nanotubes(sc-SWCNTs)as channel materials and gas sensitive materials,and poly[[4,8-bis[5-(2-ethylhexyl)-2-thienyl]benzo[1,2-b:4,5-b0]dithiophene-2,6-diyl]-2,5-thiophenediyl-[5,7-bis(2-ethylhexyl)-4,8-dioxo-4H,8H-benzo[1,2-c:4,5-c0]dithio-phene-1,3-diyl]](PBDB-T)as the photosensitive material.It is noted that it is the first time to realize the simulation of olfactory and visual senses(from 280 nm to 650 nm)with the wide operating temperature range(0-150℃)in a single SWCNT TFT device and successfully simulate the recovery of olfactory senses after COVID-19 by olfactory-visual synergy.Furthermore,our SWCNT neuromorphic TFT devices with a high IOn/IOff ratio(up to 106)at a low operating voltage(−2 to 0.5 V)can mimic not only the basic biological synaptic functions of olfaction and vision(such as paired-pulse facilitation,short-term plasticity,and long-term plasticity),but also optical wireless communication by Morse code.The proposed multisensory,broadband light-responsive,low-power synaptic devices provide great potential for developing AI robots to face complex external environments. 展开更多
关键词 carbon nanotube photosensitive polymers neuromorphic transistors olfactory-visual multisensory synergy recognition
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Interpretable machine learning excavates a low-alloyed magnesium alloy with strength-ductility synergy based on data augmentation and reconstruction 认领 引用 被引量：5
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作者 Qinghang Wang Xu Qin +6 位作者 Shouxin Xia Li Wang Weiqi Wang Weiying Huang Yan Song Weineng Tang Daolun Chen 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2025年第6期2866-2883,共18页
The application of machine learning in alloy design is increasingly widespread,yet traditional models still face challenges when dealing with limited datasets and complex nonlinear relationships.This work proposes an ... The application of machine learning in alloy design is increasingly widespread,yet traditional models still face challenges when dealing with limited datasets and complex nonlinear relationships.This work proposes an interpretable machine learning method based on data augmentation and reconstruction,excavating high-performance low-alloyed magnesium(Mg)alloys.The data augmentation technique expands the original dataset through Gaussian noise.The data reconstruction method reorganizes and transforms the original data to extract more representative features,significantly improving the model's generalization ability and prediction accuracy,with a coefficient of determination(R2)of 95.9%for the ultimate tensile strength(UTS)model and a R2of 95.3%for the elongation-to-failure(EL)model.The correlation coefficient assisted screening(CCAS)method is proposed to filter low-alloyed target alloys.A new Mg-2.2Mn-0.4Zn-0.2Al-0.2Ca(MZAX2000,wt%)alloy is designed and extruded into bar at given processing parameters,achieving room-temperature strength-ductility synergy showing an excellent UTS of 395 MPa and a high EL of 17.9%.This is closely related to its hetero-structured characteristic in the as-extruded MZAX2000 alloy consisting of coarse grains(16%),fine grains(75%),and fiber regions(9%).Therefore,this work offers new insights into optimizing alloy compositions and processing parameters for attaining new high strong and ductile low-alloyed Mg alloys. 展开更多
关键词 Magnesium alloy Interpretable machine learning Alloy design Hetero-structure Strength-ductility synergy
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Making titanium alloys ultrahigh strength and toughness synergy through deformation kinks-me diate d hierarchical α-precipitation 认领 引用 被引量：4
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作者 Keer Li Wei Chen +2 位作者 Jinyu Zhang Shewei Xin Jun Sun 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第4期142-159,共18页
Titanium alloys engineered in structural applications achieve ultrahigh strength primarily through precipitation strengthening of secondary α-phase(αs)during aging,while they often experience compromised ductility a... Titanium alloys engineered in structural applications achieve ultrahigh strength primarily through precipitation strengthening of secondary α-phase(αs)during aging,while they often experience compromised ductility and toughness due to traditional strength-toughness tradeoff.In this study,we propose a novel strategy to address this conflict by introducing deformation kinks prior to conventional cold rolling(CR)and aging processes.These kinks are produced by cold forging(CF)to create macroscopic lamellar structures in β-grains,which alter strain partitioning during subsequent CR and ultimately tailor αs-precipitation upon aging.As a result,an ultrafine duplex(αe+β)-structure is formed within kink interi-ors,while hierarchicalαs-precipitates are generated in the external β-matrix.This unique microstructure effectively enhances dislocation activity,promotes uniform plastic strain distribution and impedes crack propagation.Consequently,a simple Ti-V binary titanium alloy exhibits exceptional properties with ultra-high strength∼1636 MPa,decent ductility∼5.4% and appreciable fracture toughness∼36.1 MPa m1/2.The synergetic properties surpass those obtained through traditional CR and aging processes for the alloy and even outperform numerous multielement engineering titanium alloys reported in literature.Our findings open up a new avenue for overcoming the strength-toughness tradeoffof ultrahigh-strength titanium alloys,and also offer a facile production route towards structural materials for advanced performance. 展开更多
关键词 Titanium alloys Strength-toughness synergy Kink Precipitation Deformation and damage
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