期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到1,676篇文章
< 1 2 … 84 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Molecular enhancement of platinum electrocatalysts for hydrogen evolution 认领 引用
1
作者 Li-Ming Cao Chun-Ting He 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2026年第3期4-6,共3页
The hydrogen evolution reaction(HER)holds fundamental impor-tance for advancing renewable energy technologies.HER kinetics in alkaline media is significantly slower than in acidic environments,highlighting the importa... The hydrogen evolution reaction(HER)holds fundamental impor-tance for advancing renewable energy technologies.HER kinetics in alkaline media is significantly slower than in acidic environments,highlighting the importance of developing highly active alkaline elec-trocatalysts. 展开更多
关键词 hydrogen evolution reaction her holds hydrogen evolution reaction advancing renewable energy technologiesher platinum electrocatalysts molecular enhancement renewable energy technologies kinetics alkaline media
Bottom-Up Strategy Toward 3D Porous MXene/MoS2Nanosheets/Graphene Nanoarchitectures as Highly-Efficient Hydrogen Evolution Electrocatalysts 认领 引用 被引量：1
2
作者 Haiyan He Yuxian Chen +6 位作者 Chenyu Xu Taiji Gan Chi Ge Quanguo Jiang Jian Zhang Lei Lei Huajie Huang 《Rare Metals》 SCIE EI CAS CSCD 2026年第3期546-555,共10页
As a core component in the electrochemical water splitting system,the cathode catalyst is capable of boosting the kinetics of the hydrogen evolution reaction(HER),while the scarcity and expenditure of current noble me... As a core component in the electrochemical water splitting system,the cathode catalyst is capable of boosting the kinetics of the hydrogen evolution reaction(HER),while the scarcity and expenditure of current noble metal-based electrocatalysts seriously restrict the large-scale commercial development of hydrogen manufacturing devices.Here,we present a robust and controllable self-assembly method for the spatial construction of three-dimensional(3D)porous ternary nanoarchitectures comprising Ti3C2Tx MXene,MoS2nanosheets,and graphene(MX/MoS2/G).This bottom-up strategy contributes to the intriguing structural features of the resulting nanoarchitectures,including 3D crosslinked porous networks,ultrathin walls,plentiful exposed reactive sites,and numerous efficient electron channels.As a consequence,the optimized MX/MoS2/G electrocatalyst depicts superior electrocatalytic HER performance in terms of a competitive onset potential,a small Tafel slope,a large electrochemically active surface area,and exceptional durability,which significantly outperforms the bare MXene,MoS2,graphene,as well as binary MXene/graphene and MoS2/graphene electrocatalysts. 展开更多
关键词 3D graphene electrocatalyst hydrogen evolution MoS2nanosheets Ti3C2TxMXene
暂未订购 下载PDF
Super-hybrid transition metal sulfide nanoarrays of NiS nanoparticle/WS2nanosheet/Ni3S4nanoparticle with abundant planeand edge-type active interfaces for robust all-pH hydrogen evolution 认领 引用 被引量：1
3
作者 Teng Long Haiqing Wang 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第3期752-757,共6页
Transition metal sulfides(TMSs)are primitive composition of biocatalysts that are active for molecular hydrogen production.The development of non-precious TMSs with appropriate spatial ordering has great potentials to... Transition metal sulfides(TMSs)are primitive composition of biocatalysts that are active for molecular hydrogen production.The development of non-precious TMSs with appropriate spatial ordering has great potentials to contribute high-level hydrogen generation.Herein,super-hybrid transition metal sulfide nanoarrays of NiS nanoparticle/WS2nanosheet/Ni3S4nanoparticle(Super-NiS/WS2/Ni3S4)with high spatial ordering and abundant plane-and edge-type WS2-NiS and WS2-M3S4heterointerfaces were elaborately constructed though manipulating the sequential dissociation of phosphotungstic acid(PW12)as W precursor and nickel foam as Ni precursor in one pot.When evaluated for the electrocatalytic hydrogen evolution reaction(HER),the Super-NiS/WS2/Ni3S4only required overpotentials of 57,95,and 151 mV to drive HER in alkaline,acid,and neutral media,respectively,and presented favorable reaction kinetics and test stability.The theoretical and experimental results verify the adsorption and dissociation of water molecules are preferential on WS2-plane-related heterointerfaces.The Gibbs free energy(ΔGH*)analysis indicated the WS2-plane-NiS interface is thermodynamically optimal for HER.Moreover,the collaborations of the abundant plane-and edge-type active interfaces,the open nanosheet-based vertical array,and the phosphorus doping in Super-NiS/WS2/Ni3S4strengthen mass transport and electron transfer in electrocatalysis.The polyoxometalates-based synthetic strategy will inspire the new vision for the rational design and construction of advanced functional materials. 展开更多
关键词 Transition metal sulfide Super-hybrid structure NiS/WS2/Ni3S4 All-pH hydrogen evolution Electrocatalysis
暂未订购 下载PDF
Ionic-Liquid-Assisted Synthesis of NiTe/CoTe Heterostructure With Te Vacancies in N,P,and F Co-Doped Hollow Carbon Nanorods for Efficient Alkaline Hydrogen Evolution and High-Performance Flexible Supercapacitors 认领 引用
4
作者 Mingjie Yi Shuanghui Lv +5 位作者 Leqian Chu Song Lei Lijun Lin Jianhui Huang Hao Wang Jiaheng Zhang 《Rare Metals》 SCIE EI CAS CSCD 2026年第3期274-288,共15页
Low conductivity,slow ion-diffusion,and limited reactive sites are common problems in electrocatalysts and electrode materials.In this study,a complex NiTe-CoTe heterojunction with abundant Te vacancies embedded in N,... Low conductivity,slow ion-diffusion,and limited reactive sites are common problems in electrocatalysts and electrode materials.In this study,a complex NiTe-CoTe heterojunction with abundant Te vacancies embedded in N,P,and F co-doped hollow carbon nanorods(NiTe1-x-CoTe1-x/NPFC)was fabricated via a simple ionic liquid-assisted hydrothermal method and calcination.NiTe1-x-CoTe1-x/NPFC shows excellent activity(80.1 and 108.4 mV overpotentials at 10/100 mA cm-1)for the hydrogen evolution reaction in 1.0 M KOH solution.Moreover,NiTe1-x-CoTe1-x/NPFC exhibits an excellent energy density of 57.9 Wh kg-1at an extremely high power density of 15.90 kW kg-1in a flexible solid-state supercapacitor,revealing its outstanding performance.Mechanistic insights from synchrotron XANES,in situ spectroscopy,and DFT calculations elucidate the interfacial electron transfer pathways,dynamic water dissociation behavior during HER,reversible phase transition mechanisms during energy storage,and the optimization of OH-/H*adsorption energy.Overall,this study will facilitate the design of telluride heterojunctions with tellurium-rich vacancies as well as N,P,and F doped carbon composites,which can be applied to other electrode materials and electrocatalysts. 展开更多
关键词 alkaline hydrogen evolution flexible supercapacitor heterojunction lonic liquid vacancies
暂未订购 下载PDF
Electrostatic interaction tuned proton migration behavior by electron-rich Pt sites enhancing alkaline hydrogen evolution reaction 认领 引用
5
作者 Shuping Zhang Li Zhao +5 位作者 Wenjing Yuan Pin Zhou Zhiyi Sun Qing Cao Riming Hu Jiayuan Yu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第3期791-798,共8页
Regulating the critical process of proton migration from water dissociation for boosting alkaline hydrogen evolution reaction(HER)remains a challenge.Herein,we propose an electrostatic attraction strategy to achieve t... Regulating the critical process of proton migration from water dissociation for boosting alkaline hydrogen evolution reaction(HER)remains a challenge.Herein,we propose an electrostatic attraction strategy to achieve the migration of a highly efficient hydrogen species to Pt sites over Pt/Co@NC,which is obtained through a facile calcination and electrodeposition method.It exhibits an outstanding geometric activity(η10=31 m V),which surpasses the commercial 20 wt%Pt/C(η10=37 mV).Moreover,the mass activity of Pt/Co@NC is 5.6 A mgPt-1 at-50 mV vs.RHE,which is 2.23 times higher than that of 20 wt%Pt/C.Experimental and theoretical results indicate that the work function of the outer carbon layer,which is changed by the introduction of the inner cobalt core,plays a crucial role in reversing the direction of electron migration between the carbon layer and Pt.The negatively charged Ptδ-can spontaneously attract positively charged protons via the electrostatic interaction effect,thereby achieving the directional migration of hydrogen species.This work presents a strategy for designing advanced alkaline HER electrocatalysts by the electrostatic effect. 展开更多
关键词 Pt-based catalysts Electronic structure Proton migration Alkaline hydrogen evolution reaction Water dissociation
暂未订购 下载PDF
Strong metal-support interaction in Lewis acid anchored iridium single-atoms boosts hydrazine oxidation-coupled hydrogen evolution 认领 引用
6
作者 Guangbo Liu Zhihao Lou +7 位作者 Qinghao Quan Yu Dai Yuanshuo Ma Pengfei Wu Xuejing Cui Xin Chen Xin Zhou Luhua Jiang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第5期359-370,I0009,共12页
Hydrazine-assisted water electrolysis is a promising route for hydrogen production,and efficient bifunctional electrodes for the anodic hydrazine oxidation reaction(HzOR)and the cathodic hydrogen evolution reaction(HE... Hydrazine-assisted water electrolysis is a promising route for hydrogen production,and efficient bifunctional electrodes for the anodic hydrazine oxidation reaction(HzOR)and the cathodic hydrogen evolution reaction(HER)simplify the devices and enhance the technological advantage.However,suffering from the incompatible adsorption of different intermediates and the sluggish reaction kinetics,the design of effective and durable bi-functional electrodes still faces challenges.Herein,a Lewis acid(WOx)of powerful electron-accepting ability stabilized single-atom Ir catalyst(Ir-SA@WOx),intriguing strong metalsupport interaction(SMSI),is demonstrated to efficiently activate H2O and N2H4molecules.Ir-SA@WOxshows exceptional activity for both HER and HzOR(26.31 and 44.79 A mgIr-1at-100 mV),surpassing commercial Pt/C and Ir/C by factors of 41.8 and 27.6,respectively.A hydrazine-assisted water electrolyzer fabricated with Ir-SA@WOxachieves a current density of 100 mA cm-2at an ultra-low cell voltage of 0.313 V and electricity consumption of merely 0.75 kWh m-3H2,significantly lower than conventional water electrolysis systems(1.852 V,4.43 kWh m-3H2).In situ infrared absorption spectroscopy and theoretical calculations elucidate that the SMSI in Ir-SA@WOxreconstructs the electronic structure to facilitate the activation of the rigid water at the catalyst/electrolyte interface into free species,also optimizes H*adsorption and accelerates dehydrogenation kinetics of the potential-determining step of N2H3*-toN2H2*at Ir-sites,thereby realizing high activity for both HER and HzOR.This work illustrates the tailoring of electronic structures via the SMSI effect for catalytic-activity enhancement,guiding the design of advanced bi-functional catalysts for energy-efficient hydrogen production. 展开更多
关键词 Lewis acid Iridium single atom Hydrazine oxidation Hydrogen evolution Strong metal-support interaction
暂未订购 下载PDF
Manipulating the D-Band Center of Confined Nickel by Lattice Strain Strategy for Efficient Alkaline Hydrogen Evolution 认领 引用
7
作者 Shengjue Deng Ziyue Wang +8 位作者 Yan Zhang BinBin Jiang Chao Zhang Shisi Jiang Le Zhou Dong Wang Bingbao Mei Xinchuan Du Hu Li 《Rare Metals》 SCIE EI CAS CSCD 2026年第7期551-562,共12页
Nickel-based materials are highly remarkable as promising transition metal catalysts for the electrochemical hydrogen evolution reaction(HER)in alkaline electrolytes.However,their electrochemical performance is limite... Nickel-based materials are highly remarkable as promising transition metal catalysts for the electrochemical hydrogen evolution reaction(HER)in alkaline electrolytes.However,their electrochemical performance is limited by an unfavorable d-band energy(Ed)level.Herein,we showcase an effective lattice-strain strategy to modulate the Ed of Ni sites for achieving optimal alkaline HER kinetics.A specially designed mold spore carbon(MSC)-confined Ni/NiO catalyst with lattice compressive strain(denoted as s-Ni/NiO@MSC)is synthesized through a facile salt-assisted pyrolysis method.Based on X-ray absorption fine structure(XAFS)analysis and density functional theory(DFT)calculations,the intrinsic heteroatoms(N,P,and S)in MSC serve as anchoring sites to enhance the electronic interaction between Ni and the carbon matrix,thereby facilitating water adsorption.Furthermore,the lattice compressive strain at unsaturated Ni sites promotes electron redistribution and shortening Ni-Ni bonds,which further regulates the Ni Edto balance the adsorption/desorption capacities of water and key intermediates(H*and OH*).As a result,s-Ni/NiO@MSC displays enhanced alkaline HER performance,requiring a low potential of 81 mV to achieve 10 mA cm-2while maintaining stability for over 100 h at 100 mA cm−2.This study not only provides effective insights for the construction of carbon-confined nickel catalysts but also offers an important reference for optimizing the alkaline HER kinetics through the rational regulation of the d-band center of transition metals by a lattice strain strategy. 展开更多
关键词 alkaline hydrogen evolution reaction confined nickel d-band energy lattice strain mold spore carbon
暂未订购 下载PDF
Synergistic interaction of ternary Pd-Cu-Ni confined in nanoparticles as pH-universal catalysts for enhanced hydrogen evolution reaction 认领 引用
8
作者 Xiao Liu Haiyan Pang +4 位作者 Xinrui Kou Zheng Tang Bing Cui Shihong Cen Yuechang Wei 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第4期333-338,共6页
The development of a high-performance pH-universal electrocatalyst for hydrogen evolution reaction(HER)is a vital step toward hydrogen economy but remains a major challenge.Herein,the Pd,Cu,and Ni three elements were ... The development of a high-performance pH-universal electrocatalyst for hydrogen evolution reaction(HER)is a vital step toward hydrogen economy but remains a major challenge.Herein,the Pd,Cu,and Ni three elements were confined in a nanoparticle via the microemulsion method.Morphology and structural analysis reveal that PdCuNi nanoparticles are nearly spherical in shape with slight aggregation,and are mainly composed of metallic Pd and Cu,as well as Ni oxide.The electrochemical tests show that PdCuNi exhibits favorable HER catalytic activity in acid(η10:45 mV;Tafel slopes:33 mV/dec)and neutral(η10:71 mV;Tafel slopes:87 mV/dec)media,and alkaline(η10:66 mV;Tafel slopes:116 mV/dec)media.The mechanism analysis implies that the synergistic effect of Pd,Cu,and Ni can improve the inherent conductivity of the catalyst and accelerate the charge transfer process.Furthermore,over 30 h long-term stability has been achieved without significant attenuation.This work provides a strategy for developing versatile and robust multimetallic catalysts towards pH-universal HER. 展开更多
关键词 Synergistic effect pH-universal catalysts Hydrogen evolution reaction PdCuNi nanoparticles Hydrogen economy
暂未订购 下载PDF
Ce-induced electronic structure reconfiguration in Ni-based heterostructures for accelerated alkaline hydrogen evolution 认领 引用
9
作者 Xuejiao Sun Hongxi Li +4 位作者 Ji Hua Xiang Ji Dongmei Li Zhongzhen Tian Ying Liu 《Journal of Rare Earths》 SCIE EI CAS CSCD 2026年第7期2073-2080,I0003,共8页
This study aimed to develop efficient and stable non-precious metal electrocatalysts for the hydrogen evolution reaction(HER),addressing the limitations of current catalysts such as insufficient activity and high cost... This study aimed to develop efficient and stable non-precious metal electrocatalysts for the hydrogen evolution reaction(HER),addressing the limitations of current catalysts such as insufficient activity and high cost.A self-supported CeS/NiS/Ni3N/SSM electrocatalyst with abundant heterointerfaces was successfully constructed on a stainless steel mesh(SSM)via an electrodeposition combined with hightemperature solid-gas phase sulfidationitridation strategy.X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS)analyses confirm the successful introduction of CeS and the strong electronic interaction among the three phases of CeS,NiS,and Ni3N.The doping of Ce induces a redistribution of interface charges,forming electron-deficient Ni centers and optimizing the hydrogen adsorption energy.Scanning electron microscopy(SEM)and transmission electron microscopy(TEM)characterizations reveal that the introduction of CeS transforms the smooth agglomerated particles of NiS/Ni3N into a hierarchical porous structure composed of nanoclusters,significantly increasing the electrochemically active area and constructing clear heterointerfaces,which facilitates the exposure of active sites and mass transfer processes.Density functional theory calculations further indicate that the CeS/NiS/Ni3N heterostructure exhibits a hydrogen adsorption Gibbs free energy(ΔGH*)close to zero(-0.16 eV),significantly superior to that of single components,thereby optimizing the reaction kinetics.The results demonstrate that CeS/NiS/Ni3N/SSM delivers outstanding HER performance in 1 mol/L KOH,requiring an overpotential of only 73.6 mV to achieve the 10 mA/cm2 current density,with a Tafel slope of 87.6 mV/dec,and maintains excellent stability for at least 48 h.This work illustrates that constructing heterointerfaces with simultaneous electronic modulation and structural optimization provides an effective pathway for designing high-performance non-precious metal electrocatalysts. 展开更多
关键词 Electrocatalyst Hydrogen evolution reaction Heterostructure Rare earths
暂未订购 下载PDF
Hybrid nanoparticle-single atom Pt sites strongly coupled on selfassembled Pd network for enhanced hydrogen evolution and oxygen reduction 认领 引用
10
作者 Yongqing Shen Manyuan Gan +7 位作者 Zixuan Wang Yangrui Li Guodong An Bing Hao Xudong Wang Peizhi Liu Yanhui Song Junjie Guo 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第6期49-59,I0003,共11页
The noble metal-based catalysts for hydrogen evolution reaction(HER)and oxygen reduction reaction(ORR)in alkaline electrolytes still confront fundamental challenges in balancing activity,durability,and metal utilizati... The noble metal-based catalysts for hydrogen evolution reaction(HER)and oxygen reduction reaction(ORR)in alkaline electrolytes still confront fundamental challenges in balancing activity,durability,and metal utilization efficiency,which severely impedes the industrial application of hydrogen energy.Herein,we design a hybrid catalyst by hosting dual-scale Pt sites(single atoms and nanoparticles)into a two-dimensional(2D)Pd network,enabling strong electronic coupling and efficient metal utilization.Owing to the self-assembled 2D Pd networks composed of coplanar Pd nanoparticles,which provide abundant anchoring sites for heteroatoms and nanochannels for mass transfer,and the coexistence of multiple active sites by controlling the ratio of Pt single atoms to nanoparticles,the optimized hybrid catalyst(Pt/Pd-5 nanomesh)exhibits exceptional HER activity(20 and 125 mV at 10 and 100 mA cm-2)and ORR activity(a mass activity of 1.66 A mg-PG1Mand a specific activity of 2.70 mA cm-2).In zinc-air batteries,Pt/Pd-5 nanomesh delivers an open-circuit voltage of 1.49 V and maintains stability for 300 h at10 m A cm-2.Combined experimental and computational studies confirm that the synergistic effects between the 2D Pd matrix and multiple Pt active sites not only optimize interfacial water dissociation in HER but also promote the conversion of*O→*OH species during ORR.Furthermore,the complementary characteristics of distinct active sites enable multifunctional cooperativity.This synergistic strategy between the matrix and metal sites may provide a guideline for developing efficient,robust,and multifunctional electrocatalysts. 展开更多
关键词 Multiple sites Synergistic catalytic effect Self-assembled nanomesh Hydrogen evolution reaction Oxygen reduction reaction
暂未订购 下载PDF
Salt-assisted synthesis of WTe2 contact electrodes for efficient MoS2-based hydrogen evolution reaction 认领 引用
11
作者 Zhuojun Duan Peiyue Jin +4 位作者 Houying Xing Jian Chen Yueting Yang Yawen Tan Song Liu 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第2期611-616,共6页
The hydrogen evolution reaction(HER)is crucial for hydrogen production and sustainable energy storage.Molybdenum disulfide(MoS2),a representative transition metal dichalcogenides(TMDs),shows potential as an HER cat... The hydrogen evolution reaction(HER)is crucial for hydrogen production and sustainable energy storage.Molybdenum disulfide(MoS2),a representative transition metal dichalcogenides(TMDs),shows potential as an HER catalyst but suffers from limited performance due to poor charge transfer and interfacial effects.Here,we report a salt-assisted chemical vapor deposition(CVD)method for synthesizing high-quality tungsten ditelluride(WTe2)with tunable morphologies using alkali halides(NaCl,KCl and LiCl).The prepared WTe2 nanoribbons and hexagonal nanosheets exhibit morphology-dependent electrical conductivity,with nanosheets showing superior performance.To evaluate WTe2 as a contact electrode,WTe2−MoS2 heterostructures were fabricated and compared with graphene-MoS2 counterparts.The WTe2−MoS2 heterostructure exhibits a superior Tafel slope of 111.57 mV/dec and an overpotential of 298 mV at-10 mA/cm2,significantly outperforming graphene-based electrodes.This improvement is attributed to the excellent conductivity of WTe2 and reduced interfacial Schottky barriers.Moreover,we systematically investigate the influence of WTe2 thickness on HER performance and assess the electrochemical durability and structural stability of the heterostructure,further confirming the effectiveness of WTe2 as a contact electrode for enhancing the HER activity of MoS2.This study offers a novel approach for enhancing the HER performance of MoS2 through controlled WTe2 growth and application as a contact electrode.Our findings provide valuable insights into the synthesis of high-quality WTe2 and broaden the potential applications of two-dimensional materials in energy catalysis. 展开更多
关键词 WTe2 Alkali halides Chemical vapor deposition Transition metal dichalcogenides Hydrogen evolution reaction
暂未订购 下载PDF
Design Concept of Metal Sulfide Photocatalyst for Efficient Photocatalytic Hydrogen Evolution 认领 引用
12
作者 Qizhi Gao Xinlong Zheng +10 位作者 Jiaxin Lin Jiadi Zhai Fan Yang Xinjie Chen Minghui Wang Miaomiao Yang Jing Li Xiaodong Shi Yonghao Xiao Xinlong Tian Yuhao Liu 《Nano-Micro Letters》 SCIE EI CAS CSCD 2026年第8期268-322,共55页
Metal sulfide(MS)photocatalysts hold unique features of narrow-bandgap range,high light absorption coefficient,and suitable band structures,offering significant potential for efficient visible-light photocatalytic hyd... Metal sulfide(MS)photocatalysts hold unique features of narrow-bandgap range,high light absorption coefficient,and suitable band structures,offering significant potential for efficient visible-light photocatalytic hydrogen evolution(PHE)via water splitting.However,the low electronic dimensionality of the traditional MS photocatalyst generally decreases the transfer and migration efficiency of the photogenerated charge carriers.In addition,severe intrinsic photocorrosion issue also severely reduces the photostability,hindering the practical application of PHE at scale.In this regard,the advanced design concept of MS photocatalysts,focusing on the high electronic dimensionality construction and efficient photocorrosion inhibition,is of great importance.This review firstly introduces the basic mechanisms of PHE,followed by an in-depth discussion of the fundamental distinction between structural dimensionality and electronic dimensionality,highlighting the superiority of 3D electronic connectivity in enabling isotropic charge migration and shallow defect states.Afterward,the MS photocatalysts with 3D electronic dimensionality and solutions to photocorrosion are systematically summarized,with a special emphasis on the emerging paradigm of advanced“controllable-photocorrosion,”which strategically utilizes the corrosion process to create active sites rather than merely suppressing it.Finally,the current unsolved challenges of MS photocatalysts are comprehensively discussed. 展开更多
关键词 Metal sulfide photocatalysts Photocatalytic hydrogen evolution Water splitting Electronic dimensionality Photocorrosion
暂未订购 下载PDF
Accelerating hydrogen evolution rate and preventing metal hydroxide deposition in seawater electrolysis via addition of chelating agent EDTA-Na4 认领 引用
13
作者 Tongzhou Li Xiao Lin +7 位作者 Jingchen Na Taipu Chen Hongjie Zhang Zhiqiang Wang Longsheng Cao Liang Hong Zhigang Shao Wen-Feng Lin 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第3期686-698,共13页
Large-scale hydrogen production via water electrolysis faces a freshwater shortage.Direct seawater electrolysis offers a solution but encounters new challenges.Herein,we report a feasible strategy to both prevent meta... Large-scale hydrogen production via water electrolysis faces a freshwater shortage.Direct seawater electrolysis offers a solution but encounters new challenges.Herein,we report a feasible strategy to both prevent metal hydroxides deposition and boost the hydrogen evolution reaction by adding a chelating agent,EDTA-Na4,that chelates with Mg2+/Ca2+,thus inhibiting their deposition and gathering them near the cathode surface,resulting in breaking the ordered hydrogen bond networks of interfacial water and reducing the activation energy of water dissociation.Furthermore,hydrolysis of–COO- also promoted water dissociation to produce more active*H and*OH near the electrode surface that in turn serves as a diffusion medium for*OH,accelerating mass transfer and enabling seawater electrolysis to exhibit a stable performance,which operates continuously at 100 mA cm-2@2.20 V and 200 mA cm-2@2.58 V for 400 h in the symmetric electrolyzer and 500 mA cm-2@2.29 V for over 500 h in the asymmetric electrolyzer.This study provides a new perspective to address the issues of stable and scalable direct seawater electrolysis for practical green hydrogen production. 展开更多
关键词 Seawater electrolysis Chelating agent EDTA-Na4 Preventing Ca/Mg hydroxides deposition Hydrogen evolution reaction Interfacial water dissociation
暂未订购 下载PDF
Engineering asymmetric Ru-N3P1 coordination structures on P,N self-doped carbon for high-performance alkaline hydrogen evolution reaction 认领 引用
14
作者 Shangyan Zhou Fei Liu +4 位作者 Qiandan Ren Huarui Wang Tongda Yang Jiamin Wang Xiaodan Wang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第7期828-835,I0020,共8页
Alkaline water electrolysis holds great promise for environmental remediation and sustainable energy conversion,yet its efficiency is hampered by the sluggish kinetics of the hydrogen evolution reaction(HER).Ru-based ... Alkaline water electrolysis holds great promise for environmental remediation and sustainable energy conversion,yet its efficiency is hampered by the sluggish kinetics of the hydrogen evolution reaction(HER).Ru-based single-atom catalysts(SACs),with atomically dispersed active sites,offer enhanced catalytic performance.However,the development of Ru SACs is hindered by aggregation at high loadings and an obscured structure-activity relationship.In this work,we engineer Ru SACs supported on P,N self-doped carbon(PNC)derived from mushroom substrate residue through precise regulation of Ru content.This catalyst achieves stable Ru dispersion at loadings up to 2 wt%,thereby forming well-defined RuN3P1coordination structures.Density functional theory calculations reveal that the asymmetric Ru-N3P1 coordination modulates the electronic structure of Ru single atoms,facilitating both kinetically favorable water dissociation and thermodynamically balanced hydrogen adsorption,leading to superior HER activity.The optimized RuSAs/PNC-2wt%catalyst delivers exceptional alkaline HER performance,achieving an overpotential as low as 38 m V at 10 mA cm-2 and remarkable stability maintained over 325 h,attributed to its high density of accessible active sites and facilitated electron transfer kinetics.This study provides an effective strategy for constructing high-loading SACs and establishes a quantitative structure-activity relationship,guiding the design of advanced electrocatalysts for sustainable energy conversion. 展开更多
关键词 Asymmetric coordination Ruthenium single-atom catalysts Biomass carbon Hydrogen evolution reaction
暂未订购 下载PDF
Interfacial Ni-W bridge bond enabling Ni3ZnC(0.7)/WC heterostructure with enhanced hydrogen evolution activity and stability 认领 引用
15
作者 Liangliang Feng Jingyi Chen +7 位作者 Qianqian Liu Yijun Liu Mengfei Zhou Xi Hu Liyun Cao Guodong Li Yong Zhao Jianfeng Huang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第5期390-398,I0010,共9页
The chemical bonds at heterogeneous interfaces can optimize the hydrogen adsorption free energy(ΔGH*)by reconfiguring the electronic structure,while an in-depth understanding of the hydrogen adsorption configurati... The chemical bonds at heterogeneous interfaces can optimize the hydrogen adsorption free energy(ΔGH*)by reconfiguring the electronic structure,while an in-depth understanding of the hydrogen adsorption configuration is key to identifying the optimal active sites for enhancing hydrogen evolution performance.Here,we synthesize a wide-pH hydrogen evolution reaction(HER)-active Ni3ZnC0.7/WC heterostructure electrocatalyst uniformly anchored on a carbon framework through a one-step calcination method.Experimental and theoretical results demonstrate that Ni-W bridge bonds within the Ni3ZnC0.7/WC heterointerfaces can induce strong electronic interactions,which help to facilitate electron transfer and optimize theΔGH*,thereby enabling extremely excellent catalytic activity.Consequently,owing to its enhanced inherent activity and favorable electrical conductivity,Ni3ZnC0.7/WC exhibits exceptional catalytic performance for HER(94 and 173 mV at 10 mA/cm2)in alkaline and acidic conditions.Additionally,it can maintain durability for at least 565 h under acidic conditions and 582 h under alkaline conditions,respectively,validating its excellent catalytic stability across a broad pH range.This research provides a new perspective and theoretical basis for designing efficient and stable HER electrocatalysts through interface chemical bond engineering. 展开更多
关键词 Hydrogen evolution reaction Heterostructure catalysts Hydrogen adsorption configuration Interfacial Ni-W bridge bonds
暂未订购 下载PDF
CoSe2@MoS2core-shell nanocubes as highly efficient electrocatalysts for acidic and alkaline hydrogen evolution 认领 引用
16
作者 Jun-Hui Cao Guang-Long Wang +6 位作者 Shu-Sen Hou Hu Zhou Chun Ouyang Long-Feng Lin Yan-Xin Qiao Yi-Shan Jiang Qi-Chao Zhang 《Journal of Iron and Steel Research International》 SCIE EI CSCD 2026年第6期56-67,共12页
CoCo-Prussian blue analogue nanocubes were firstly synthesized via a co-precipitation method and subsequently converted into CoSe2nanocubes through a high-temperature selenization.The core-shell-structured CoSe2... CoCo-Prussian blue analogue nanocubes were firstly synthesized via a co-precipitation method and subsequently converted into CoSe2nanocubes through a high-temperature selenization.The core-shell-structured CoSe2@MoS2electrocatalyst was then fabricated via a hydrothermal process.The resulting material exhibits outstanding hydrogen evolution reaction performances in both acidic and alkaline electrolytes,achieving overpotentials of 229 and 247 mV at the current density of 10 mA cm-2,respectively,with the corresponding Tafel slopes of 79 and 115 mV dec-1.Notably,the CoSe2@MoS2catalyst maintains a high catalytic activity after extended cycles.The enhanced catalytic activity and durability are primarily ascribed to the core-shell architecture,wherein MoS2nanosheets uniformly anchored on the surface of CoSe2nanocubes effectively suppress the self-agglomeration of MoS2nanosheets,thus providing abundant active sites. 展开更多
关键词 Electrocatalyst Hydrogen evolution CoSe2 MoS2 Core−shell structure
暂未订购 下载PDF
Metastable heterophase engineering to generate in-plane strain coupled with a built-in electric field enabling efficient hydrogen evolution 认领 引用
17
作者 Selvam Mathi Hamza MHaruna +7 位作者 Zhixiao Zhu James Kumankuma-Sarpong Hao Yang Zeba Khanam Muhammad Mushtaq Feng Wang Zhongmin Wang M.-Sadeeq Balogun 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第7期118-131,I0005,共14页
Strain engineering,interfacial electronic modulation,and bubble management are three powerful descriptors for advancing high-current-density water splitting,yet they are rarely integrated within a single electrode des... Strain engineering,interfacial electronic modulation,and bubble management are three powerful descriptors for advancing high-current-density water splitting,yet they are rarely integrated within a single electrode design.Here,we realize their convergence by constructing amorphous-crystalline(AC)phosphorus-doped NiFe2O4 with heterophase interfaces directly constructed on thiocyanate-etched stainless steel(KSS)(denoted KNP-350-AC).The mismatched phases generate~1.5%in-plane tensile strain that reshapes the d-band configuration of Ni/Fe sites through modulation of the local electronic structure.Meanwhile,strong metal-support interaction modulates the work function and establishes a built-in electric field(BEF),enabling favorable interfacial charge redistribution and optimized adsorption energetics of reaction intermediates,as confirmed by ultraviolet photoelectron spectroscopy(UPS)and density functional theory(DFT).Simultaneously,the rough KSS framework introduces superaerophobic microtextures that accelerate bubble detachment under industrial-level current densities.These coupled effects allow the KNP-350-AC electrode to achieve a hydrogen evolution reaction(HER)overpotential of 280 m V@500 mA cm-2,together with remarkable durability in both alkaline freshwater and seawater.This integrated triple-modulation strategy provides a robust pathway for developing practical HER electrocatalysts for large-scale hydrogen production. 展开更多
关键词 Heterophase strain engineering Built-in electric field modulation Superaerophobic electrode architecture Phosphorus-doped NiFe2O4 Hydrogen evolution reaction
暂未订购 下载PDF
Atomically Dispersed Platinum Sites Immobilized on NiFe LDH by Controlling Localized Amorphization for Efficient Alkaline Electrocatalytic Hydrogen Evolution 认领 引用
18
作者 Yanhui Song Xiaohui Zhao +7 位作者 Zixuan Wang Guodong An Ziqi Wang Yi Zhang Yongqing Shen Peizhi Liu Hai Li Junjie Guo 《Rare Metals》 SCIE EI CAS CSCD 2026年第6期706-716,共11页
Platinum(Pt)single‐atom catalyst(SAC)shows great promise for hydrogen evolution reaction(HER),but faces a huge challenge in activity enhancement due to the isolated single‐atom sites.Fabricating support with partial... Platinum(Pt)single‐atom catalyst(SAC)shows great promise for hydrogen evolution reaction(HER),but faces a huge challenge in activity enhancement due to the isolated single‐atom sites.Fabricating support with partially amorphous(pa)structures to realize the synergetic interaction in neighboring single atoms could facilitate H2O dissociation and optimize H*adsorption.However,the electrocatalytic mechanism of SAC achieved by tailoring the different amorphous contents of the support has not been clearly explored yet.Herein,neighboring Pt SAs confined in NiFe LDH(Pt@pa‐NiFe LDH‐24)were successfully synthesized via a localized amorphization and impregnation strategy,resulting in significantly boosted HER performance.Experiments and calculations demonstrate that the Pt SAs can accelerate the adsorption/desorption of H2O and effectively promote the Volmer step of the partially amorphous substrate.Benefiting from this,the optimized Pt@pa‐NiFe LDH‐24 exhibits enhanced intrinsic activity,exhibiting a lower overpotential(η10:40 mV)than the commercial Pt/C catalyst.This partial amorphization strategy sheds new light on supporting noble metal single‐atom catalysts for designing efficient HER catalysts in water electrolysis. 展开更多
关键词 hydrogen evolution reaction layered double hydroxide partially amorphous Pt single atom
暂未订购 下载PDF
Non-Precious Metals Enhance Hydrogen Evolution in COF/Cd0.9Cu0.1S S-Scheme Heterojunctions:KPFM Reveals Charge Transfer Pathways 认领 引用
19
作者 Yue Zhao Kezhen Qi +1 位作者 Xiaojie Yang Li Zhao 《Rare Metals》 SCIE EI CAS CSCD 2026年第3期614-623,共10页
Photocatalytic hydrogen production from water splitting is a promising strategy for sustainable and clean energy generation.However,the design of low-cost,highly active photocatalysts remains a critical challenge.In t... Photocatalytic hydrogen production from water splitting is a promising strategy for sustainable and clean energy generation.However,the design of low-cost,highly active photocatalysts remains a critical challenge.In this study,covalent organic frameworks(COFs)were loaded onto the surface of Cd0.9Cu0.1S to fabricate COF/Cd0.9Cu0.1S heterojunction.As a photocatalyst for hydrogen evolution,the optimized 10COF/Cd0.9Cu0.1S sample achieved a hydrogen evolution rate of 3398.3μmol h-1g-1,representing 2.3-fold and 3398.3-fold enhancements compared with pristine Cd0.9Cu0.1S(1523.3μmol h-1g-1)and COF(almost nothing),respectively.The addition of Co2+as a co-catalyst is a key factor in enhancing performance.Comprehensive photocatalytic tests,in situ X-ray photoelectron spectroscopy,and transient absorption spectroscopy revealed that the charge-transfer process follows an S-scheme mechanism.The covalent interaction between COF and Cd0.9Cu0.1S,coupled with favorable band alignment,induces a built-in electric field at the heterojunction interface,thereby accelerating charge separation and suppressing recombination.This work provides an effective strategy for constructing efficient organic-inorganic heterojunctions,offering new insights into photocatalytic water splitting. 展开更多
关键词 Cd0.9Cu0.1S covalent organic framework photocatalytic hydrogen evolution S-scheme heterojunction transient absorption
暂未订购 下载PDF
Spin density symmetry breaking-mediated hydrogen evolution in single-atom catalysts 认领 引用
20
作者 Xin Song Zhonghua Li +1 位作者 Li Sheng Yang Liu 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2026年第1期213-226,共14页
Symmetry-broken single-atom catalysts(SACs)are pivotal due to their asymmetric electronic environments,which enhance the activity of the hydrogen evolution reaction(HER).This study investigated how symmetry breaking i... Symmetry-broken single-atom catalysts(SACs)are pivotal due to their asymmetric electronic environments,which enhance the activity of the hydrogen evolution reaction(HER).This study investigated how symmetry breaking in SACs affects HER performance using density functional theory(DFT)and variable selection machine learning(ML).The study revealed a nearly volcano-shaped correlation between the degree of spin density symmetry breaking(D asym)and HER activity,with catalysts at the base of the volcano showing enhanced HER activity.Spin density symmetry breaking facilitates the enrichment of unpaired electrons on the active sites and reduces HER energy barriers,resulting in up to a 40-fold enhancement in HER performance of symmetry-broken SACs compared to symmetric SACs.The ML model accurately identified key descriptors,such as symmetry breaking and electronic transfer effects,allowing spin density symmetry breaking on M-N3C-SWCNTs to be further condensed into an effect term with a structure-property relationship.A weaker symmetry breaking effect and a stronger electron transfer enhance HER performance.ML-guided analysis highlighted a spin selection-related Volmer-Heyrovsky pathway with a dual activation mechanism involving surface atom displacement and para-activation.These findings offer critical insights into the design of advanced HER catalysts by elucidating the interplay between symmetry-breaking properties and catalytic behavior. 展开更多
关键词 Symmetry breaking Spin density Hydrogen evolution reaction Interpretable machine learning Single-atom catalyst
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 2 … 84 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈