Fine regulation of electron transfer in Ag@Co3O4 nanoparticles for boosting the oxygen evolution reaction

Zhe Li; Yi Feng; Xiuyao Lang; Wenjing Kang; Jing Mao; Gurong Shen; Hui Liu; Cunku Dong; Weichao Wang; Xiwen Du

doi:10.1039/d1cc02189c

Fine regulation of electron transfer in Ag@Co₃O₄ nanoparticles for boosting the oxygen evolution reaction

Chem Commun (Camb). 2021 Jun 24;57(51):6284-6287. doi: 10.1039/d1cc02189c.

Authors

Zhe Li¹, Yi Feng¹, Xiuyao Lang², Wenjing Kang¹, Jing Mao¹, Gurong Shen¹, Hui Liu¹, Cunku Dong¹, Weichao Wang², Xiwen Du³

Affiliations

¹ Institute of New Energy Materials, School of Materials Science and Engineering, Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, P. R. China. xwdu@tju.edu.cn ckdong@tju.edu.cn.
² Department of Electronics, Tianjin Key Laboratory of Photo-Electronic Thin Film Device and Technology, Nankai University, Tianjin, 300071, P. R. China. weichaowang@nankai.edu.cn.
³ Institute of New Energy Materials, School of Materials Science and Engineering, Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, P. R. China. xwdu@tju.edu.cn ckdong@tju.edu.cn and Longyan University, Longyan, 364012, P. R. China.

PMID: 34075972
DOI: 10.1039/d1cc02189c

Abstract

In this study, a core-shell structure (Ag@Co3O4) was constructed to modify the valence state of cobalt cations precisely by continuously adjusting the shell thickness. There exists a volcano relationship between the valence state of Co sites and OER activity, and the lowest overpotential (212 mV@10 mA cm-2) has been obtained.