文献类型：期刊文献

英文题名：Benchmarking the pH-Stability Relationship of Metal Oxide Anodes in Anion Exchange Membrane Water Electrolysis

作者：Zhang, Liyue[1];Xu, Qiucheng[2];Hu, Yanjie[1];Chen, Ling[1];Jiang, Hao[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]Tech Univ Denmark, Dept Phys, Sect Surface Phys & Catalysis SurfCat, DK-2800 Lyngby, Denmark

年份：2023

卷号：11

期号：36

起止页码：13251

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20233314571505);WOS:【SCI-EXPANDED(收录号:WOS:001033249300001)】；

基金：This work was supported by the National Natural Science Foundation of China (U22B20143). Thanks to Rongzhen Chen for training on the spray-coating device.

语种：英文

外文关键词：water electrolysis; anion exchange membrane; OER; electrolyte; stability

摘要：Anion exchange membrane water electrolysis(AEMWE) isone of themost promising technologies for producing green hydrogen; however,they still suffer from durability issues. One task is to find suitableelectrolyte conditions for anode catalysts that endow them with bothhigh activity and stability. Herein, we benchmark the pH-stabilityrelationship of four typical metal oxides as anode catalysts in theAEMWE. Their electrochemical performance and structural stabilitywere in-depth analyzed through impedance, dissolved composition inthe electrolyte, and correlated Pourbaix diagram. NiFe2O4 with the best activity and stability in the strongalkaline (pH = 14) shows terrible stability in pure water, which isthen verified due to the severe Fe leaching, and it cannot be alleviatedby alkaline pre-activation. Notably, Co3O4 showscomparable activity and stability to IrO2 in pure waterand weak alkaline conditions. At pH = 12, it entails only & SIM;2.18V to reach 1.0 A cm(-2) and stabilizes for 40 h, beingsuperior to others. This work screens out suitable transition metaloxides as a substitute for noble metals and their optimal applicationscenarios for AEMWE. Screeningof suitable transition metal oxides as alternativesto noble metal catalysts to power green hydrogen production.