Issue 72, 2021

A cobalt–manganese layered oxide/graphene composite as an outstanding oxygen evolution reaction electrocatalyst

Abstract

To enhance the oxygen evolution reaction mass activity of cobalt–manganese layered oxide (CMO), we develop a one-pot synthetic process to anchor CMO onto graphene sheets (CMO/G). Its mass activity is 66-fold higher than that of physically mixed bare CMO with graphene and even better than those of previously reported graphene-supported first-row transition metal oxide-based electrocatalysts. The remarkable mass activity is attributed to the excellent intrinsic activity of CMO, small and well-dispersed CMO nanosheets on graphene sheets and hydrophilized graphene due to the synthetic process. Furthermore, CMO/G exhibits excellent stability.

Graphical abstract: A cobalt–manganese layered oxide/graphene composite as an outstanding oxygen evolution reaction electrocatalyst

Supplementary files

Article information

Article type
Communication
Submitted
15 Jun 2021
Accepted
12 Aug 2021
First published
23 Aug 2021

Chem. Commun., 2021,57, 9052-9055

A cobalt–manganese layered oxide/graphene composite as an outstanding oxygen evolution reaction electrocatalyst

H. Kobayashi, Y. Sugawara, T. Yamaguchi and I. Honma, Chem. Commun., 2021, 57, 9052 DOI: 10.1039/D1CC03152J

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