文献类型：期刊文献

英文题名：Oxygen reduction reaction kinetics of platinum-based catalysts under stress induction

作者：Jiang, Haibo[1]; Lu, Jiyuan[1]; Bi, Liyuan[1]; Zhang, Lili[1]; Yang, Jiajia[1]; Liu, Cui[1]; Yu, Shengwei[2]; Shen, Jianhua[1]; Zhu, Yihua[1]

机构：[1] Shanghai Engineering Research Center of Hierarchical Nanomaterials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai, 200237, China; [2] School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2024

卷号：61

期号：10

起止页码：2059

外文期刊名：Chemical Communications

收录：EI(收录号：20250317680438)

语种：英文

外文关键词：Degradation - Electrolytic reduction - Oxygen reduction reaction - Platinum - Reaction intermediates - Reaction kinetics

摘要：The ORR kinetic optimization for PtNi and PtPb catalysts is conferred by stress induction. First principles calculation shows the cleavage barrier reduction of the key intermediate *OOH to 28.48 and 0 kJ mol–1, respectively. Proper kinetic tuning led to a mass activity promotion of PtNi to 3.57 times that of Pt/C, whereas excessive modulation induced activity degradation for PtPb and shifted the rate-determining step to the first electron transfer, which was verified by in situ infrared spectroscopy and electrochemical characterization. ? The Royal Society of Chemistry 2025.