A cobalt–manganese layered oxide/graphene composite as an outstanding oxygen evolution reaction electrocatalyst. Issue 72 (23rd August 2021)

• Record Type: Journal Article
• Authors: Kobayashi, Hiroaki; Sugawara, Yuuki; Yamaguchi, Takeo; Honma, Itaru
• Is Part Of: Chemical communications. Volume 57:Issue 72(2021)
• Page Start: 9052
• Page End: 9055
• Publication Date: 2021-08-23
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d1cc03152j
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : A one-pot synthesis for graphene-deposited layered-type cobalt–manganese oxide remarkably enhanced its OER mass activity in alkaline water splitting. 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.