在大电流密度电催化二氧化碳还原反应中的单原子催化剂  

Single-Atom Catalysts for Electrocatalytic Carbon Dioxide Reduction at High Current Densities

作　　者：李佳烨 张鹏[1] 潘原 Jiaye Li;Peng Zhang;Yuan Pan(State Key Laboratory of Heavy Oil Processing,China University of Petroleum(East China),Qingdao 266580,China)

机构地区：[1]中国石油大学(华东)重质油国家重点实验室,青岛266580

出　　处：《化学进展》2023年第4期643-654,共12页Progress in Chemistry

基　　金：国家自然科学基金项目(No.22108306);泰山学者科研项目(No.tsqn201909065);山东省优秀青年科学基金(No.ZR2021YQ15);山东省自然科学基金(No.ZR2020QB174)资助。

摘　　要：二氧化碳电还原(ECR)是一种环境友好的能源转换方式,可以将CO_(2)转化为各种具有高附加值的燃料或化学品,但是在大电流密度下通常存在反应活性、产物选择性和长周期稳定性差的问题。单原子催化剂具有高选择性、高催化活性和高原子利用率等优点,在ECR过程中具有巨大的潜力。如何设计高活性、高选择性和长周期稳定性的单原子催化剂用于大电流密度下电催化CO_(2)还原成为该领域的热点研究问题。本文综述一系列单原子催化剂在大电流密度下的ECR反应的研究进展,重点总结了增强单原子催化剂在大电流密度下ECR性能的活性、产物选择性及长周期稳定性调控机制,为系统设计和制备ECR单原子催化剂提供了思路,并对ECR单原子催化剂工业化应用的机遇与挑战进行了展望。Electrocatalytic carbon dioxide reduction(ECR)is an environmentally friendly energy conversion method that can convert CO_(2)into various high value-added fuels or chemicals.However,it usually is subject to low catalytic activity,low selectivity and low macrocyclic stability at high current densities.Benefitting from the advantages of high selectivity,high catalytic activity and high atom utilization,single atom catalysts show great potential in ECR process.Therefore,how to design single atom catalysts with high activity,high selectivity and high macrocyclic stability has become a research hot issue in this field.This paper reviews the research progress of a series of single atom catalysts in electrocatalytic carbon dioxide reduction at high current densities,and focuses on the activity regulation mechanisms,product selectivity regulation mechanisms and macrocyclic stability regulation mechanisms to enhance the ECR performance of single atom catalysts,which provides ideas for the systematic design and synthesis of ECR single atom catalysts.The opportunities and challenges of ECR single atom catalysts are prospected.

关 键 词：单原子催化剂 CO_(2)电还原 调控机制 大电流密度 

分 类 号：X701[环境科学与工程—环境工程] O643.36[理学—物理化学]