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

Hiroaki Kobayashi, Yuuki Sugawara, Takeo Yamaguchi, Itaru Honma

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

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.

Original languageEnglish
Pages (from-to)9052-9055
Number of pages4
JournalChemical Communications
Volume57
Issue number72
DOIs
Publication statusPublished - 2021 Sep 16

ASJC Scopus subject areas

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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