物理化学学报

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电催化动力学简介

许义飞, 杨瀚文, 常晓侠, 徐冰君   

  1. 北京大学化学与分子工程学院, 北京 100871
  • 收稿日期:2022-10-20 修回日期:2022-11-21 录用日期:2022-11-21 发布日期:2022-11-24
  • 通讯作者: 徐冰君 E-mail:b_xu@pku.edu.cn
  • 基金资助:
    北京分子科学国家研究中心资助

Introduction to Electrocatalytic Kinetics

Yifei Xu, Hanwen Yang, Xiaoxia Chang, Bingjun Xu   

  1. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
  • Received:2022-10-20 Revised:2022-11-21 Accepted:2022-11-21 Published:2022-11-24
  • Contact: Bingjun Xu E-mail:b_xu@pku.edu.cn
  • Supported by:
    This work is supported by the Beijing National Laboratory for Molecular Sciences.

摘要: 电催化过程是实现社会向可再生能源与化学品转型的主要驱动力之一。电催化动力学分析是探索反应机理和建立电催化剂构效关系行之有效的方法。本文将通过三个广泛研究的电催化反应:电化学CO2、CO还原反应和氧还原反应,探讨Tafel分析的普遍过程、隐含假设以及需要注意的问题。此外,本文将介绍电化学反应活化参数的基本概念和关键热力学、动力学变量之间的关系。

关键词: 电催化, 反应动力学, 电化学活化参数

Abstract: Electrocatalytic reactions and processes are expected to be major drivers in society’s shift toward renewable energy and chemicals. Electrocatalytic kinetic analysis is an accessible and informative technique to interrogate reaction mechanisms and establish structure–activity relationships. In this tutorial, we discuss general procedures, implicit assumptions, and potential pitfalls when conducting the Tafel analysis in the context of three widely investigated electrocatalytic reactions, i.e., the electrochemical CO2, CO, and O2 reduction reactions. Basic concepts and relations among key thermodynamic and kinetic variables are also covered to help interpret the activation parameters of electrochemical reactions.

Key words: Electrocatalysis, Reaction kinetics, Electrochemical activation parameter

MSC2000: 

  • O643