Electrocatalytic volcano relations:surface occupation effects and rational kinetic models

作     者：Yongting Chen Junxiang Chen Shengli Chen 陈永婷;陈俊翔;陈胜利

作者机构：Hubei Key Laboratory of Electrochemical Power SourcesCollege of Chemistry and Molecular SciencesWuhan UniversityWuhan 430072HubeiChina CAS Key Laboratory of Design and Assembly of Functional NanostructuresFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian 350002China 

基　　金：国家自然科学基金(21832004 22002110) 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2022年第43卷第1期

页      码：2-10页

摘      要：Electrocatalysis plays a vital role in technologies of energy and environment relevance,such as water electrolysis,fuel cells,synthesis of carbon and nitrogen-based fuels,*** volcano relations(VRs)are general and standard tools for predicting and understanding the activity trends of *** modern electrocatalytic VRs are generally based on the kinetic models with the maximum free energy(△G^(0)_(max))of reaction steps as the rate-determining term(RDT),in which some important factors that crucially impact the reaction kinetics are missed,for examples,the surface structures and coverages of reaction intermediates and spectators,other free energy demanding steps than that associated with the △G^(0)_(max),and so *** this perspective,we first give a brief introduction of the theoretical framework of current electrocatalytic VRs and the underlying problems in the oversimplifiedDG0max-based kinetic models,and then provide an account of our effort in constructing more rational VRs for electrocatalytic *** introduce a new theoretical framework of electrocatalytic VRs based on kinetic model with the so-called energetic span(δE)serving as *** the surface-coverage effects and multiple free energy-demanding steps are considered,the VRs thus obtained show several new features such as strong potential dependence,asymmetric ascending and descending branches,relatively flat tops,and so *** effectiveness of theδE-based VRs is verified for hydrogen and oxygen electrocatalytic ***,research directions to further rationalize the electrocatalytic VRs are discussed.

主 题 词：Electrocatalysis Volcano relations Energetic span Hydrogen electrocatalytic reaction Oxygen electrocatalytic reaction 

学科分类：081705[081705] 0817[工学-轻工类] 08[工学] 0703[理学-化学类] 

核心收录：

D　O　I：10.1016/S1872‐2067(21)63890-1

馆 藏 号：203106053...