A Bifunctional Hybrid Electrocatalyst for Oxygen Reduction and Evolution: Cobalt Oxide Nanoparticles Strongly Coupled to B,N-Decorated Graphene

Angewandte Chemie
Yun TongYi Xie

Abstract

The electrocatalyzed oxygen reduction and evolution reactions (ORR and OER, respectively) are the core components of many energy conversion systems, including water splitting, fuel cells, and metal-air batteries. Rational design of highly efficient non-noble materials as bifunctional ORR/OER electrocatalysts is of great importance for large-scale practical applications. A new strongly coupled hybrid material is presented, which comprises CoOx nanoparticles rich in oxygen vacancies grown on B,N-decorated graphene (CoOx NPs/BNG) and operates as an efficient bifunctional OER/ORR electrocatalyst. Advanced spectroscopic techniques were used to confirm formation of abundant oxygen vacancies and strong Co-N-C bridging bonds within the CoOx NPs/BNG hybrid. Surprisingly, the CoOx NPs/BNG hybrid electrocatalyst is highly efficient for the OER with a low overpotential and Tafel slope, and is active in the ORR with a positive half-wave potential and high limiting current density in alkaline medium.

References

Jan 19, 2012·Chemical Society Reviews·Fangyi Cheng, Jun Chen
Sep 11, 2012·Journal of the American Chemical Society·Yongye LiangHongjie Dai
Jan 16, 2013·Journal of the American Chemical Society·Yu ZhaoZheng Hu
May 16, 2014·Journal of the American Chemical Society·Changlin ZhangZhenmeng Peng
Mar 13, 2015·Journal of the American Chemical Society·Kun XuYi Xie
Sep 1, 2015·Nature Communications·Ching-Wei TungHao Ming Chen
Sep 10, 2015·Journal of the American Chemical Society·Liang-Liang FengXiaoxin Zou
May 12, 2016·Advanced Materials·Cheng TangFei Wei

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Citations

Jan 22, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Jingyi ZhuDongfeng Xue
Apr 1, 2020·Chemistry, an Asian Journal·Xinqun ZhangLiangti Qu
Mar 16, 2019·Proceedings of the National Academy of Sciences of the United States of America·Pengzuo ChenYi Xie
Jan 16, 2021·Journal of Colloid and Interface Science·Qiong SunXiaoping Dong
May 22, 2021·Chemical Society Reviews·Chang-Xin ZhaoQiang Zhang
Oct 28, 2020·ACS Applied Materials & Interfaces·Jingjing Wang, Hua Chun Zeng

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