化工进展2024，Vol.43Issue(12)：6855-6861,7.DOI:10.16085/j.issn.1000-6613.2023-2170
钇掺杂二氧化铱用于高效酸性电化学析氧反应
Yttrium doped iridium dioxide for efficient acidic electrochemical oxygen evolution reaction
摘要
Abstract
Proton exchange membrane water electrolysis(PEMWE)is a water electrolysis process with high current density,fast dynamic response and high hydrogen purity.To achieve its efficient industrial application,the development of inexpensive,efficient and stable oxygen evolution catalysts is particularly important.In this paper,a two-step synthesis method was used to dope the rare earth element yttrium(Y)into amorphous carbon supports to modify the surface of iridium dioxide(IrO2)particles.The prepared IrO2/YxC exhibited excellent catalytic activity for the acidic oxygen evolution reaction with a required overpotential of only 270mV at a current density of 10mA/cm2,which was lower than that of undoped IrO2/C(300mV)and commercial IrO2(310mV).The enhancement of the metal carrier interaction between the carbon carrier and its surface iridium dioxide particles by Y doping led to changes in the electron density around the Ir active site,thereby facilitating the regulation of the adsorption of reaction intermediates and optimizing the reaction rate.This research provided a new catalyst design approach for the oxygen evolution process in PEMWE,and was expected to promote the wider application of PEMWE technology in the field of clean energy.关键词
质子交换膜电解水/析氧反应/二氧化铱催化剂/稀土元素钇/金属-载体相互作用Key words
proton exchange membrane water electrolysis/oxygen evolution reaction/iridium dioxide catalyst/rare earth element yttrium/metal-carrier interaction分类
化学化工引用本文复制引用
刘振宇,沈紫晨,曹东,郭晓燕..钇掺杂二氧化铱用于高效酸性电化学析氧反应[J].化工进展,2024,43(12):6855-6861,7.基金项目
国家重点研发计划(2022YFB3807500). （2022YFB3807500）
