文献类型：期刊文献

英文题名：Interfacial engineering to construct an IrOx/WO3 hetero-structured catalyst for efficient acidic OER catalysis

作者：Guan, Zeyu[1];Weng, Yuxiao[1];Li, Jiankun[1];Li, Shiyi[1];Wang, Keyu[1];Lei, Linfeng[1];Wang, Yixing[1,2];Zhuang, Linzhou[1];Xu, Zhi[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Suzhou Lab, Suzhou 215000, Peoples R China

年份：2024

卷号：48

期号：6

起止页码：2505

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;EI(收录号：20240415424334);WOS:【SCI-EXPANDED(收录号:WOS:001144038900001)】；

基金：The research funding was provided by the National Key R&D Program of China (grant no. 2021YFB3801301) and the National Natural Science Foundation of China (grant no. 22075076, 22005098, and 22378119).

语种：英文

外文关键词：Catalyst activity - Electrolytes - Iridium compounds - Proton exchange membrane fuel cells (PEMFC)

摘要：Proton exchange membrane water electrolysis (PEMWE) can be coupled with renewable energy power generation technology and is considered to be a highly promising hydrogen production technology. However, the acidic electrolyte environment, as well as the numerous sulfonic acid groups on the proton exchange membrane surface, can seriously corrode the oxygen evolution reaction (OER) catalyst and even cause deactivation. To develop an efficient acidic OER catalyst, the IrOx/WO3 heterostructure OER catalyst was prepared by a hydrothermal-calcination method. The coordination environment of IrOx was regulated through the electronic rearrangement effect, improving the OER activity and stability of the catalyst in acidic media. The prepared IrOx/WO3 exhibits excellent OER activity in 0.5 M H2SO4, with an overpotential of only 260 mV to achieve a current density of 10 mA cm(-2) and a mass activity of 176.8 A g(Ir)(-1). It can stably operate for over 12 hours at a current density of j = 10 mA cm(-2).