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Prediction method for stationary crossflow instability transition in supersonic boundary layers based on multi-layer perceptron 认领 引用 被引量：2
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作者 Lei Qiao Xi Jiang +5 位作者 Jiakun Fan Yutian Wang Lu Xie Ningjuan Dong Jiakuan Xu Junqiang Bai 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2026年第7期36-51,共16页
Crossflow vortices induced transition is one of the most important instability types in supersonic aircraft boundary layers.While the traditional linear stability theory(LST)-based eN method demonstrates satisfactory ... Crossflow vortices induced transition is one of the most important instability types in supersonic aircraft boundary layers.While the traditional linear stability theory(LST)-based eN method demonstrates satisfactory predictive capabilities for this kind of transition,its practical implementation faces inherent limitations:the requirement of first-and second-order wallnormal derivatives of boundary layer velocityemperature profiles,the need for initial eigenvalue guesses,and the computational burden of solving eigenvalue problems.To address these challenges,this study develops a multi-layer perceptron(MLP)model tailored for linear stability analysis of three-dimensional compressible boundary layers based on the artificially defined quasi-three-dimensional non-similar boundary layer solutions.The boundary layer edge flow parameters and perturbation characteristics are mapped to eigenvalues or local growth rates of the envelop curves through fully connected layers.This architecture eliminates the need for computing wall-normal derivatives of velocityemperature profiles,initial eigenvalue estimation,and direct eigenvalue problem solving.Extensive validation across varying operational conditions and geometries(airfoils and swept wings)demonstrates exceptional agreement between the MLP’s predictions(eigenvalues and disturbance amplification factors)and traditional LST results.Furthermore,the model’s transition prediction capability is rigorously verified using National Aeronautics and Space Administration’s supersonic swept-wing crossflow-dominated transition benchmark,incorporating both stability analysis and flight test data.Results confirm the model is an efficient and reliable computational framework for transition prediction in three-dimensional finite-span wings. 展开更多
关键词 Supersonic swept wing Boundary layer transition Crossflow instability Linear stability theory eN method Multi-layer perceptron
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Surface reconstruction via rapid solution quenching to enhance structural stability of lithium-rich layered cathodes 认领 引用 被引量：1
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作者 Hailiang Chu Jiaxiao Meng +4 位作者 Longde Duan Shujun Qiu Errui Wang Fen Xu Lixian Sun 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2026年第5期1553-1563,I0092-I0106,共11页
Lithium-rich layered oxides are prospective materials for future-generation cathodes attributable to their high specific capacity.However,significant surface instability,particularly under high-voltage operating condi... Lithium-rich layered oxides are prospective materials for future-generation cathodes attributable to their high specific capacity.However,significant surface instability,particularly under high-voltage operating conditions,leads to substantial voltage decay and dramatic capacity degradation during long-term cycling,severely limiting their widespread application.In this study,we developed a universal brine quenching strategy to construct a stabilized composite surface structure for lithium-rich layered oxides.This structure comprises an inner surface layer with a Y-doped layered structure and an outermost layer featuring a disordered rock-salt structure.Doping in the layered structure strengthens the Y-O bonds,raises the energy barrier for oxygen evolution,and significantly increases the stability of the lattice oxygen.Additionally,the disordered rock-salt surface structure reduces oxygen release during the charge and discharge cycles.Consequently,this well-designed surface structure significantly boosts the structural stability of the lithium-rich layered oxide surface,suppresses structural degradation during long-term cycling,and facilitates Li+diffusion kinetics.The improved redox activity,combined with superior structural stability,contributes to an outstanding electrochemical performance.For instance,the Y-quenched Li1.2Mn0.54Ni0.13Co0.13O2(LLO)cathode exhibited an improved discharge capacity of 283 mAh·g-1at 0.1 C and 223 mAh·g-1at 1 C,along with remarkable cyclic stability retaining 91.2% of its capacity after 300 cycles at 1 C,and a reduced voltage decay of 0.76 mV per cycle(compared to 1.16 mV per cycle for pristine LLO).This research provides valuable insights into the design and synthesis of high-energydensity lithium-rich layered oxides through a simple and cost-effective strategy. 展开更多
关键词 Li-rich layered oxides brine quenching surface structure voltage decay cycling stability
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The importance of properly correcting the electric double layer effect in unravelling the intrinsic kinetics of electrode reactions 认领 引用 被引量：2
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作者 Bingyu Liu Erfei Zhen +3 位作者 Wei Chen Lulu Zhang Jun Cai Yanxia Chen 《Nano Materials Science》 EI CAS CSCD 2026年第4期866-872,共7页
Understanding the effects of the electric double layer(EDL)on electrode kinetics is of great importance for improving the performance of electrochemical devices.In this work,by using the HER at Au(111)in x M HClO4+... Understanding the effects of the electric double layer(EDL)on electrode kinetics is of great importance for improving the performance of electrochemical devices.In this work,by using the HER at Au(111)in x M HClO4+(1-x)M NaClO4or NaOH as a model reaction,the intrinsic kinetic parameters for HER has been unveiled based on the modified Poisson-Nernst-Planck equations and the Frumkin-Butler-Volmer theory.Our analysis reveals that i)the EDL effects induced changes in proton concentration cH+RPand electric potential φRPat the reaction plane are the main reason for the difference of HER current in the cases with x M HClO4and x M HClO4+(1-x)M NaClO4;ii)the EDL effects are the main origin for the difference in HER current between acidic and alkaline solutions at the Au(111).Our work demonstrates that microkinetic simulation with properly considering the EDL effects is important for unravelling intrinsic reaction kinetics of electrocatalytic reactions. 展开更多
关键词 Hydrogen evolution reaction Proton discharge Au(111)electrode-electrolyte interface Electric double layer effects
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Interface nanocrystalline reinforcement mechanism of particle interlayer in pulsed current assisted rolling Mg/Al laminate 认领 引用 被引量：1
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作者 Peng Li Xiaobao Ma +3 位作者 Yongheng Peng Zhongkai Ren Peng Chen Tao Wang 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2026年第3期464-482,共19页
Interface transition zone and the interface influence zone are critical factors in determining the interfacial bonding strength and ductility of heterogeneous metallic laminates.In this study,an innovative process—“... Interface transition zone and the interface influence zone are critical factors in determining the interfacial bonding strength and ductility of heterogeneous metallic laminates.In this study,an innovative process—“cold spraying+pulsed current rolling”—is proposed for fabricating Mg/Al laminates,significantly enhancing both interface strength and ductility.Notably,the average interface shear strength achieved is three times that of conventional hot rolling,reaching 70.7 MPa,while the interface shear strain increases from 3.4%to 28%.The high-velocity impact of cold-sprayed aluminum particles on Mg and Al substrates forms a three-dimensional interface,effectively expanding the interfacial bonding area and refining the interfacial microstructure.The fine-grained coating structure produced by cold spraying acts as a primer,facilitating the formation of a nanocrystalline interface during pulsed current assisted rolling.The interface comprises an ultrafine nanocrystalline Al coating with grain sizes around 30 nm andβ-phase nanotwins approximately 300 nm in scale,significantly enhancing the interfacial bonding strength.Together with the Mg and Al substrates,the nanocrystalline transition layer forms a layered gradient transitional structure that evolves into a 50-μm-wide interface-affected zone during deformation.This unique feature promotes strain delocalization,effectively mitigates strain concentration at the interface,and improves its fracture toughness.Additionally,the nanocrystalline interface increases the grain boundary area,promoting atomic diffusion and strengthening metallurgical bonding both between the coating and the substrate and within the coating itself.The“cold spraying+pulsed current rolling”process offers a straightforward approach to fabricating laminated nanostructured transition layers,demonstrating great potential in the interfacial design of heterogeneous materials. 展开更多
关键词 Nanocrystalline transition layer Pulsed current assisted rolling Cold spraying Magnesium/aluminium laminates Strain delocalization
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Efficient and stable inverted perovskite solar cells employing self-assembled hole-transporting monolayers with enhanced interface interaction 认领 引用 被引量：1
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作者 Botong Li Jie Liu +11 位作者 Boyang Lu Xuepeng Liu Mingyuan Han Weilun Du Ziqiang Su Zedong Lin Wenyong Feng Lei Xiao Zhipeng Shao Yong Ding Songyuan Dai Mohammad Khaja Nazeeruddin 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第1期712-719,I0016,共8页
Molecular tailoring of self-assembled hole-transporting monolayers(SAMs)has been proven as an efficient approach for improving the device performance of inverted perovskite solar cells.Herein,a novel SAM with extended... Molecular tailoring of self-assembled hole-transporting monolayers(SAMs)has been proven as an efficient approach for improving the device performance of inverted perovskite solar cells.Herein,a novel SAM with extended conjugation is designed and synthesized,named NaPh-4PACz.Compared to Ph-4PACz,NaPh-4PACz exhibits a larger adsorption energy with the ITO substrate,enabling the formation of a more uniform and dense film,thereby preventing direct contact between the perovskite and ITO.Additionally,NaPh-4PACz also has a stronger interaction with the perovskite,which can reduce buried interface defects and suppress non-radiative recombination.Consequently,NaPh-4PACz-based devices achieved a power conversion efficiency of 25.48%due to their interfacial“adhesive”ability.Importantly,the stability of the NaPh-4PACz-based devices was significantly improved. 展开更多
关键词 Inverted perovskite solar cells Self-assembled monolayer Hole transport layer Extended conjugation NaPh-4PACz
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Cationic vacancy enriched NiFe layered double hydroxide with Co doping for ultra-stable ampere-level alkaline water oxidation 认领 引用 被引量：1
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作者 Faiza Meharban Faheem Abbas +7 位作者 Xiaotong Wu Lei Tan Kaiyang Li Haojie Zhang Yongge Wei Chao Lin Miho Yamauchi Xiaopeng Li 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第3期386-396,共11页
NiFe-layered double hydroxides(NiFe-LDHs)are among the most promising earth-abundant electrocatalysts for the oxygen evolution reaction(OER)in alkaline media.However,their practical application is hindered by intrinsi... NiFe-layered double hydroxides(NiFe-LDHs)are among the most promising earth-abundant electrocatalysts for the oxygen evolution reaction(OER)in alkaline media.However,their practical application is hindered by intrinsic activity limitations and poor stability,primarily due to the asymmetric adsorption of oxygen intermediates.To overcome this,the binding strength must be synergistically tuned to a moderate level to optimize catalytic performance.Here,we engineered NiFeCoCr LDH through Co doping to enhance electrical conductivity and controlled Cr leaching to introduce cationic vacancies for modulating intermediate binding strength in NiFe LDH.X-ray absorption near-edge structure and extended X-ray absorption fine structure analyses reveal that NiFe-LDH with Co doping and Cr vacancies modulates the Ni oxidation state and local coordination environment,leading to a balanced electronic structure and enhanced structural complexity around the Ni sites.Additionally,these vacancies can trap OH-/H2O species,which can serve as a reservoir for OH- transfer,facilitating the rapid formation of OER intermediates and enhancing catalytic performance at high current densities.As a result,VCr-NiFeCo LDH achieves 1.6 A cm-2current density at 1.7 V vs.RHE while maintaining stable operation for over 1000 h at 500 mA cm-2.Density functional theory(DFT)calculations validate the synergistic effects of Co doping and Cr-induced vacancies on intermediate binding energies and improved OER kinetics.Overall,this work presents a rational design strategy to simultaneously enhance the activity and durability of NiFe-based OER catalysts for their application in high-performance alkaline water electrolysis. 展开更多
关键词 Oxygen evolution reaction Cationic vacancy Layered double hydroxides(LDH) Alkaline water electrolysis(AWE) Sacrificial leaching
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A survey of panel aeroelasticity in shock-dominated flow:Perspectives from fluid-structure interactions and shock wave-boundary layer interactions 认领 引用 被引量：1
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作者 Aiming SHI Yiwen HE 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第1期210-229,共20页
As a multidisciplinary phenomenon,panel aeroelasticity in shock-dominated flow is featured by two primary interactions:Fluid-Structure Interactions(FSIs)and Shock-Boundary Layer Interactions(SBLIs).The former raises s... As a multidisciplinary phenomenon,panel aeroelasticity in shock-dominated flow is featured by two primary interactions:Fluid-Structure Interactions(FSIs)and Shock-Boundary Layer Interactions(SBLIs).The former raises structural concerns,and the latter is of aerodynamic interest.Thus,panel aeroelasticity in shock-dominated flow represents a vital topic for the development and optimization of supersonic vehicles and propulsion systems.This review systematically summarizes recent advances in the methodologies applied to capture structural and fluid dynamics,including theoretical models,numerical simulations,and wind tunnel experiments.The application of data-driven modal decomposition,an advanced technique to extract physically crucial features,on the topic is introduced.From the perspective of FSIs,the distinctive aeroelastic behaviors in shock-dominated flow,including hysteresis phenomena and nonlinear responses,are highlighted.From the perspective of SBLIs,the modifications in their spatial and temporal characteristics imposed by the aeroelastic responses are emphasized.Motivated by the interaction between the shock waves and structural response,different strategies have been proposed to implement aeroelastic suppression and shock control,which have the potential to enhance structural safety and aerodynamic performance in the next generation of high-speed flight vehicles. 展开更多
关键词 Aeroelasticity Fluid structure interaction Modal decomposition Shock boundary layer interactions Shock waves
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Simultaneous lidar observations of the sporadic Ni layer and sporadic Na layer in the MLT 认领 引用
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作者 ZhiJun Zhao XuYang Jiang +3 位作者 FuJu Wu YuHang Qi Jing Jiao GuoTao Yang 《Earth and Planetary Physics》 EI CSCD 2026年第1期156-166,共11页
Here we report on simultaneous lidar observations of sporadic Ni(Nis)layers and sporadic Na(Nas)layers in the atmosphere over Yanqing,Beijing(40.42°N,116.02°E)from April 2019 to October 2022.During 343 night... Here we report on simultaneous lidar observations of sporadic Ni(Nis)layers and sporadic Na(Nas)layers in the atmosphere over Yanqing,Beijing(40.42°N,116.02°E)from April 2019 to October 2022.During 343 nights of observation,68 Nis and 56 Nas were observed.The seasonal variation of Nis and Nas was also obtained,with the highest occurrence of Nis being in July(43%)and that of Nas being in June(61%).We found that the seasonal variation of Nis is similar to that of Nas and that both occur more frequently in summer than in winter.In addition,we found 23 events in which Nis and Nas occur simultaneously.The average peak altitude of Nas is approximately 1 km higher than that of Nis,and the peak density ratio of Nas to Nis is approximately 5,which is half the density ratio of the two main layers.Additionally,the strength factor for Nas is smaller than that for Nis.Through data analysis of sporadic E layers(Es),we found that Nis and Nas has a significant correlation with Es.The neutralization rates of Ni+/Na+were calculated according to the dissociative recombination reaction of Ni+/Na+and the WACCM-Ni(Whole Atmosphere Community Climate Model of Ni).The production rates of Ni and Na were estimated to be approximately 1:4.4,which is consistent with the density ratio of Nis to Nas.The results showed that the neutralization reaction of Ni+,Na+,and electrons in Es is the main reason for the formation of the Nis layer and the Nas layer. 展开更多
关键词 lidar observation sporadic Ni layer sporadic Na layer sporadic E layer seasonal variation
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A thermodynamically guided interfacial precipitation strategy for high-power and long-life Ni-rich layered cathodes 认领 引用
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作者 Ye Jin Kim JinHa Shim +2 位作者 Jongbeom Kim Duho Kim Jin Ho Bang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第3期608-617,共10页
Interfacial engineering is crucial for developing high-performance Ni-rich layered cathodes for lithiumion batteries.Here,we introduce an interfacial precipitation(IP)strategy,guided by first-principles calculations,t... Interfacial engineering is crucial for developing high-performance Ni-rich layered cathodes for lithiumion batteries.Here,we introduce an interfacial precipitation(IP)strategy,guided by first-principles calculations,to create a functionally graded cathode during precursor synthesis.Based on thermodynamic principles of bulk insolubility and phase separation kinetics,we achieved the selective precipitation of Co onto the surface of a Ni-rich hydroxide precursor.Upon high-temperature lithiation,this engineered precursor spontaneously forms a unique,bifunctional Co-rich spinel-like layer on the final LiNi0.88Co0.06Mn0.06O2(NCM)cathode.This architecture suppresses detrimental Li/Ni cation mixing and protects the active material.Consequently,the IP-driven NCM cathode demonstrates vastly superior rate capability,delivering 140.8 m A h g-1at 5C,compared to 112.9 mA h g-1for its conventionally prepared counterpart.This enhancement is attributed to significantly lower charge-transfer resistance and faster kinetics.Remarkably,in a full-cell configuration,the IP-driven NCM cathode maintains 81.5%capacity after 1000 cycles at an aggressive 5C rate.This work presents a thermodynamically driven,scalable strategy for designing advanced cathodes with exceptional high-power performance and stability. 展开更多
关键词 Ni-rich layered oxide Interfacial precipitation Precursor engineering High-rate performance Spinel surface layer
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Fixed-Time Fault-Tolerant Control for Small UUV With Dual-Layer Evolving Performance Boundary Under Full-State Constraints 认领 引用
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作者 Hongtao Liang Huiping Li Junzhi Yu 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2026年第7期1767-1769,共3页
Dear Editor,This letter investigates the fixed-time fault-tolerant control(FTC)problem for small unmanned underwater vehicles(UUVs)subject to the full-state error constraints involving position-layer and velocitylayer... Dear Editor,This letter investigates the fixed-time fault-tolerant control(FTC)problem for small unmanned underwater vehicles(UUVs)subject to the full-state error constraints involving position-layer and velocitylayer.First,a dual-level evolving performance boundary is devised by integrating the fixed-time performance functions and low-complexity error transformation techniques.This novel formulation converts the full-state constrained control issue into a dual-layer unconstrained stabilization,thus ensuring fixed-time convergence regardless of initial conditions. 展开更多
关键词 fixed time fault tolerant control velocity layer full state constraints small unmanned underwater vehicles small unmanned underwater vehicles uuvs subject dual layer evolving performance boundary position layer
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Effect of buffer layer Bi2Te3on anisotropic Gilbert damping of Fe/α-GeTe on Al2O3substrate 认领 引用
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作者 Qing-Lin Yang Xu Yang +2 位作者 Xiang-Qun Zhang Wei He Zhao-Hua Cheng 《Chinese Physics B》 SCIE EI CAS CSCD 2026年第6期838-844,共7页
Theα-GeTe is a typical ferroelectric Rashba semiconductor(FERSC)that has attracted a lot of attention in spintronics.The Fe/α-GeTe grown on Si substrates has anisotropic Gilbert damping.However,the effect of Al2O... Theα-GeTe is a typical ferroelectric Rashba semiconductor(FERSC)that has attracted a lot of attention in spintronics.The Fe/α-GeTe grown on Si substrates has anisotropic Gilbert damping.However,the effect of Al2O3,as another common substrate,remains unknown whenα-GeTe is grown on it.Here,we fabricatedα-GeTe thin films using Al2O3substrates.Theα-GeTe directly grown on Al2O3exhibits an in-plane polycrystalline structure.A Bi2Te3buffer layer can make theα-GeTe exhibit a single-crystal feature.The anisotropic Gilbert damping of FM layers is present in Fe/α-GeTe/Bi2Te3/Al2O3and vanished in Fe/α-GeTe/Al2O3.Our finding illustrates thatα-GeTe growth on Al2O3with a Bi2Te3buffer layer can serve as a suitable platform for anisotropic research.Our work paves the way for the application of the Al2O3-basedα-GeTe thin films in anisotropic electronics. 展开更多
关键词 ferroelectric Rashba semiconductor anisotropic Gilbert damping buffer layer
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Dynamic Phase Transformation Mechanisms in Ti48Al5Nb2Cr0.6Re0.1C Alloy With Heterogeneous Layered Microstructure 认领 引用
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作者 Ke-Xuan Li Hong-Ze Fang +4 位作者 Rui-Run Chen Xian-Fei Ding Bo-Bo Li Bao-Hui Zhu Jing-Jie Guo 《Rare Metals》 SCIE EI CAS CSCD 2026年第1期419-438,共20页
Introducing solid-state phase transformations into the design of heterogeneous structures is considered an effective strategy for simultaneously optimizing both microstructure and mechanical properties.This study inve... Introducing solid-state phase transformations into the design of heterogeneous structures is considered an effective strategy for simultaneously optimizing both microstructure and mechanical properties.This study investigates the thermodynamic and kinetic mechanisms of the γ→α transformation in Ti48A15Nb2Cr0.6Re0.1C alloy under different deformation conditions and explores its correlation with the formation of a heterogeneous layered structure.Results show that the relative content of the α2phase increases from 6.50% to 9.26%,indicating the occurrence of the γ→α transformation.Under 1150℃ and 0.005 s-1 strain rate,dynamic recrystallization accelerates the formation of equiaxed structures with increasing strain.Under the 1250℃/60%/0.05 s-1 condition,a structure consisting of alternating layers of γ dynamic recrystallization and shear bands is formed.From a thermodynamic perspective,the γ→α transformation is driven by a more negative Gibbs free energy difference(ΔGγ→α) and the actual critical stress below the yield stress of the γ phase.From a kinetic perspective,under 1150℃ and 0.005 s-1 strain rate,the transformation involves the formation of nano-intermediate phases,interface step diffusion,and adjustments of interfacial dislocation.Under the 1250℃/60%/0.05 s-1 condition,the transformation is promoted by the γ and γ textures with high shear stress within shear bands.First-principles calculations indicate that under different uniaxial compressive stress states,the α2 phase exhibits a decreased bulk modulus and an increased shear modulus,leading to an increase in theoretical hardness.Fine-grain strengthening and dislocation strengthening introduced by the γ→α transformation and heterogeneous structure are crucial for the increase in hardness. 展开更多
关键词 hardness hot compression layered structure phase transformation TiAl alloy
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Morphologically Uniform Electron Transport Layer Incorporating Conjugated Polymer for Efficient Charge Extraction in Tin Perovskite Solar Cells 认领 引用
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作者 Du Hyeon Ryu Bong Joo Kang +6 位作者 Nasir Khan Seungjin Lee Jun Hyung Kim Hyun-Sung Yun Nam Joong Jeon Sang Hyuk Im Chang Eun Song 《Carbon Energy》 SCIE EI CAS CSCD 2026年第5期1-14,共14页
Efficient and stable tin halide perovskite solar cells(THPSCs)require improved interfacial engineering at the electron transport layer(ETL);however,poor interfacial contact and trap-induced recombination remain key li... Efficient and stable tin halide perovskite solar cells(THPSCs)require improved interfacial engineering at the electron transport layer(ETL);however,poor interfacial contact and trap-induced recombination remain key limitations.Here,we present a morphologically uniform ETL formed by blending PC61BM with 5 wt%of the conjugated polymer P3HT.This structure suppresses interfacial trap states and facilitates effective carrier extraction through improved contact and vertical phase continuity.The optimized devices achieve a power conversion efficiency(PCE)of 16.06%,with an independently certified efficiency of 15.3%.Structural and spectroscopic analyses reveal a trap-suppressed and chemically stabilized interface.The devices also exhibit long-term operational stability,retaining 94%of their initial PCE after 900 h of ambient storage under encapsulation.Furthermore,the successful fabrication of a 12 cm2mini-module achieving a PCE of 10.44%validates the scalability of this approach.These findings underscore the potential of conjugated polymer-modified ETLs to address intrinsic limitations of tinbased perovskites and advance the development of efficient,stable,scalable,and lead-free photovoltaic technologies. 展开更多
关键词 conjugated polymer electron transport layer stability tin perovskite uniformity
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Origin and design principles of efficient artificial interface layers:Crystal facets dependent CeO2 interlayer for reversible zinc anode 认领 引用
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作者 Sifan Qiao Xinyan Zhou +4 位作者 Qing Liang Long Chen Fuxi Liu Yong Gao Wei Zhang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第6期376-385,I0010,共10页
Artificial interface layer-aided zinc anodes(AIL@Zn)with simultaneously controllable Zn dendrite growth and corrosion resistance are highly expected to simultaneously achieve both high capacity and cycle stability in ... Artificial interface layer-aided zinc anodes(AIL@Zn)with simultaneously controllable Zn dendrite growth and corrosion resistance are highly expected to simultaneously achieve both high capacity and cycle stability in aqueous zinc ion batteries(AZIBs).However,how the facet effects of the AIL guides the efficient Zn deposition behavior remains an open question.Herein,we devise a facile and scalable hydrothermal approach to synthesize various nanostructured X-CeO2 AILs to coat the Zn anode,ultimately offering an X-CeO2@Zn electrode.Among all X-CeO2@Zn anodes,rod-shaped CeO2 with exposed{110}facets modified Zn anode(R-CeO2@Zn)can effectively inhibit dendrite growth and side reactions,thereby delivering ultrastable durability over 2500 h at 1 mA cm-2/0.5 mAh cm-2and reversibility cycled for 250 h at 84.7%depth of discharge.In addition,MoS2//R-CeO2@Zn full cell delivers a significantly capacity retention rate above 99%after 1000 cycles.The superior performance originates from the exposed{110}facets,which uniquely modulate the binding and diffusion energies of Zn adatoms to promote homogeneous deposition.This work shifts the AIL design principle from mere composition selection to atomic-level facet control,offering a general strategy for next-generation battery electrodes.Additionally,the strategy proposes its extension to other metal-ion battery systems. 展开更多
关键词 Ceria Zn anode Artificial interface layer Exposed facets Design principle
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Peroxymonosulfate activation by NiCoFe-layered double hydroxides for enhancing contaminant elimination in water 认领 引用
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作者 Nan Lv Miaomiao Yang +7 位作者 Lite Meng Zijian Xu Haitao Li Xuguang Li Qiteng Zheng Yunhui Zhang Liangguo Yan Bin Dong 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第7期69-78,共10页
Peroxymonosulfate(PMS)-based advanced oxidation processes(AOPs)have emerged as promising technologies for water purification.The development of multi-metal catalysts has attracted considerable attention in recent year... Peroxymonosulfate(PMS)-based advanced oxidation processes(AOPs)have emerged as promising technologies for water purification.The development of multi-metal catalysts has attracted considerable attention in recent years due to the limited efficiency of single-metal catalysts.Herein,a novel trimetallic layered double hydroxide(NiCoFe-LDH)was rationally designed to boost PMS activation for the removal of emerging contaminants.It was found that the NiCoFe-LDH/PMS system achieved a total organic carbon removal of 43.5%for oxytetracycline(OTC),which was twice that of unary-metal LDHs and surpassed most reported data.Mechanistic studies revealed a dual-pathway PMS activation mechanism:(1)surface Ni(Ⅱ)/Co(Ⅱ)/Fe(Ⅲ/Ⅳ)sites decomposed PMS into free and surface-bound sulfate radicals and hydroxyl radicals,and(2)PMS bound to the NiCoFe-LDH surface to generate active complexes(PMS*)and subsequently electrons were transferred from OTC to PMS* thereby being oxidized by electron-transfer pathways.The wide pH adaptability(3–11)and high efficiency in real water matrices indicate the high potential of NiCoFe-LDH in practical applications.This work provides new insights into the rational design of multi-metal catalysts and their application in AOPs-based sustainable water treatment. 展开更多
关键词 Layered double hydroxides PMS Water purification Radical pathway Electron-transfer pathway
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Continuum modeling for layer jamming structures 认领 引用
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作者 Shuai Zhang Jiantao Yao +1 位作者 Shizeng Li Xinbo Chen 《Theoretical & Applied Mechanics Letters》 EI CAS CSCD 2026年第1期77-85,共9页
Layer jamming structures(LJS)are a class of variable stiffness structures that are valuable for adaptive and soft robotic systems.However,existing models for LJS often rely on discrete approximations or are tailored t... Layer jamming structures(LJS)are a class of variable stiffness structures that are valuable for adaptive and soft robotic systems.However,existing models for LJS often rely on discrete approximations or are tailored to specific configurations,limiting their generalizability and computational efficiency.In this study,we propose a contin-uum elastoplastic constitutive model for LJS based on the average-field technique.The model captures both the jamming(no interlayer slipping)and slipping states of LJS,enabling analytical expressions for yield criteria,and dissipated energy density.Finite element simulations in Abaqus incorporating periodic boundary conditions were conducted to validate the theoretical model under various deformation scenarios,including uniaxial shear,multi-directional shear,and coupled shear-normal loading.The results demonstrate strong agreement between numerical and theoretical predictions,effectively capturing the nonlinear transitions in stiffness and energy evo-lution.This continuum framework offers a unified,scalable tool for modeling the mechanical behavior of LJS and supports the design and optimization of stiffness-tunable systems in soft robotics and beyond. 展开更多
关键词 Layer jamming structure Continuum modeling Elastoplastic constitutive
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Deep-seated zonal damage in anti-dip layered rock slope:A case study in southwest China 认领 引用
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作者 Guoxiang Yang Shengwen Qi +2 位作者 Yaojiang Fan Lihui Li Jianbing Peng 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2026年第6期4402-4415,共14页
Deep-seated zonal damage in anti-dip layered rock slopes is commonly observed in the alpine valley region of Southwest China.Particularly,zonal deformation in deep rock mass with significant inhomogeneity concerns eng... Deep-seated zonal damage in anti-dip layered rock slopes is commonly observed in the alpine valley region of Southwest China.Particularly,zonal deformation in deep rock mass with significant inhomogeneity concerns engineers,as these slopes often experience large-scale deformation,making them highly challenging to the geo-safety of major projects.Some scholars believe that it is related to high geostress and soft-hard interbedded rock mass structure,which does not fully explain the mechanism of deep-seated zonal damage in anti-dip layered rock slopes.This study investigated the effects of earthquakes on the zonal damage mechanism by the shaking table test and the Universal Discrete Element Code(UDEC).Our research results,combined with field investigations,indicate that earthquakes can play a key role in deep-seated zonal damage of an anti-dip layered rock slope.The ratio of slope height to seismic wavelength emerged as a crucial parameter controlling deep-seated zonal damage in an anti-dip layered rock slope,especially when it exceeds 0.5.The results suggest that for deformation prediction and early warning of large-scale anti-dip rock slopes,deep-seated zonal damage should be focused on more,especially with a depth exceeding 150 m. 展开更多
关键词 Anti-dip layered slope Shaking table test Deep-seated zonal damage Earthquake
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On determining friction velocity in a spatially developing turbulent boundary layer under zero pressure gradient 认领 引用
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作者 Dong Li Shaocheng Qian +1 位作者 Yuqi Liu Kai Zhang 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2026年第5期223-238,共16页
Accurate determination of the friction velocity in wall-bounded turbulent flows is crucial for both fundamental research and engineering applications.In this work,the integral relation for friction velocity proposed b... Accurate determination of the friction velocity in wall-bounded turbulent flows is crucial for both fundamental research and engineering applications.In this work,the integral relation for friction velocity proposed by Mehdi et al.is modified based on a power-law assumption for the total shear stress within the turbulent boundary layer.The present approach requires only the mean streamwise velocity and Reynolds shear stress profiles in the logarithmic region and beyond,thereby reducing the reliance on near-wall data.Extensive validation against numerical and experimental data shows that the proposed method can accurately predict the friction velocity over a broad range of Reynolds numbers.We further extend the method by deriving a more general relation for the friction velocity through an n-fold repeated integration of the mean streamwise momentum equation.It is found that the accuracy of the present method can be improved to within±1%when the integral relation is obtained based on a twentyfold repeated integration instead of a threefold integration.The method applies to both smooth-and rough-wall turbulent boundary layers under zero pressure gradient.It is particularly useful in situations where measurements in the near-wall region with y+<100 are either unavailable or subject to significant uncertainty. 展开更多
关键词 Friction velocity Turbulent boundary layer Momentum integral method
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Synergistic effects of Cr-Ni-Cu-Mo alloying on rust layer evolution and corrosion protection in weathering steel 认领 引用
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作者 Sha-Sha Zhang Liang Sun +6 位作者 Tian-Qi Chen Bing-Qin Wang Zhi-Chao Che Hui Xue Xue-Qun Cheng Xiao-Gang Li Chao Liu 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第4期256-275,共20页
The corrosion protection mechanism of a Cr-Ni-Cu-Mo multi-alloyed weathering steel(Q500qENH)is systematically investigated by coupling experimental characterization with dissolution-diffusion-deposition modeling.Compa... The corrosion protection mechanism of a Cr-Ni-Cu-Mo multi-alloyed weathering steel(Q500qENH)is systematically investigated by coupling experimental characterization with dissolution-diffusion-deposition modeling.Compared with conventional Q500q steel,Q500qENH steel exhibits one order of magnitude lower metal-ion concentration in the electrolyte,effectively alleviating acidification caused by hydrolysis and retarding substrate dissolution.The rust layer evolves through sequential deposition of Fe3O4,MoO2,Cr2O3,and CuO,forming a dense and defect-minimized microstructure.Thermodynamic and kinetic analyses reveal that the nucleation rates of Fe3O4 and CuO in Q500qENH steel are two orders of magnitude higher than in Q500q steel,accelerating the establishment of a compact barrier film.The multi-alloy synergy enhances α-FeOOH and FeCr2O4 formation,increasing charge-transfer resistance(Rct)and polarization resistance(Rp)over exposure time.These results demonstrate that Cr,Mo,and Cu collectively improve ion equilibrium and oxide nucleation behavior,offering a quantitative understanding of rust layer evolution and superior long-term corrosion protection in multi-alloyed weathering steels. 展开更多
关键词 Weathering steel Rust layer Corrosion mechanism Multi-alloy synergy Dissolution-diffusion-deposition model
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The potential influence study of a nonlinear layer on a vibroacoustic coupling system 认领 引用
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作者 Yuhao Zhao Yilin Chen Rongshen Guo 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2026年第2期224-236,共13页
Vibroacoustic coupling systems widely exist in various engineering fields,and controlling their vibration and noise is essential.Unfortunately,the existing literature lacks research on the vibroacoustic coupling syste... Vibroacoustic coupling systems widely exist in various engineering fields,and controlling their vibration and noise is essential.Unfortunately,the existing literature lacks research on the vibroacoustic coupling system composed of multi-plates and a cavity with nonlinear factors,limiting the application of nonlinear factors in controlling the vibration and noise of the vibroacoustic coupling system.This work aims to explore the effect of the nonlinear layer on the behavior of a vibroacoustic coupling system,where the behavior of the vibroacoustic coupling system motivated by the nonlinear layer and the vibroacoustic behavior under constant frequencies caused by the nonlinear layer is systematically studied.It can be found that the behavior of the vibroacoustic coupling system with a nonlinear layer can be correctly predicted by using the Lagrange method.The nonlinear layer establishes a new vibration-converting pathway of the vibroacoustic coupling system.A reasonable nonlinear layer is suitable for controlling the vibration of plate 2 and the sound pressure of the cavity.In a reasonable variation range,adjusting key parameters of the nonlinear layer is a feasible way to artificially control the unconventional responses under constant frequencies of the vibroacoustic coupling system.Overall,the introduction of the nonlinear layer provides a possible approach to control the vibroacoustic coupling system’s behavior,providing a new perspective to utilize the nonlinear layer in controlling the vibroacoustic coupling system. 展开更多
关键词 Vibroacoustic behavior Vibroacoustic system Nonlinear layer Lagrange method
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