Oxygen evolution reaction performance misjudgment caused by the self-oxidation process  

作　　者：Siyi Yang Jian Luo Yinghui Xu Mingjie Wu Yingkui Yang 

机构地区：[1]State Key Laboratory of New Textile Materials and Advanced Processing Technologies,Wuhan Textile University,Wuhan 430200,China [2]Department of Chemical Engineering,McGill University,Montreal,QC H3A 0C5,Canada

出　　处：《Nano Research Energy》2024年第4期1-4,共4页纳米能源研究(英文)

基　　金：National Natural Science Foundation of China(No.22208331);Science and Technology Innovation fund of Wuhan Textile University(243001).

摘　　要：Based on the interference effect of surface self-oxidation peak on the oxygen evolution reaction(OER)performance,appropriate experimental strategies and data processing methods are crucial to correctly identify and address the oxidation peak in nickel-based materials to ensure data accuracy.Considering these facts that frequent OER performance misjudgment would confuse the readers,we revealed this reason and proposed the use of multi-potential step method to avoid non-steady-state currents caused by capacitive charging effects or intermediate oxidation.Additionally,combining electrochemical impedance spectroscopy(EIS)analysis,we discussed high-frequency response characteristics to further reveal the surface self-oxidation process.These research findings are crucial for accurately evaluating the actual performance of some special materials in electrochemical catalysis.

关 键 词：oxygen evolution reaction self-oxidation reaction electrochemical impedance spectroscopy multi-potential step method 

分 类 号：O64[理学—物理化学]