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

Hiroaki Kobayashi; Yuuki Sugawara; Takeo Yamaguchi; Itaru Honma

doi:10.1039/d1cc03152j

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

Hiroaki Kobayashi, Yuuki Sugawara, Takeo Yamaguchi, Itaru Honma

Center for Mineral Processing and Metallurgy (CMPM)

Research output: Contribution to journal › Article › peer-review

3 Citations (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 language	English
Pages (from-to)	9052-9055
Number of pages	4
Journal	Chemical Communications
Volume	57
Issue number	72
DOIs	https://doi.org/10.1039/d1cc03152j
Publication status	Published - 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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10.1039/d1cc03152j

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title = "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.",

author = "Hiroaki Kobayashi and Yuuki Sugawara and Takeo Yamaguchi and Itaru Honma",

note = "Funding Information: This work was supported by the {\textquoteleft}{\textquoteleft}Network Joint Research Center for Materials and Devices: Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials{\textquoteright}{\textquoteright} Research Program. H. K. acknowledges financial support by JST ALCA-SPRING Grant JPMJAL1301 and ERCA Environment Research and Technology Development Fund JPMEERF20212R01, and Y. S. acknowledges financial support by JSPS KAKENHI Grant 20K15087. Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2021.",

year = "2021",

month = sep,

day = "16",

doi = "10.1039/d1cc03152j",

language = "English",

volume = "57",

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journal = "Chemical Communications",

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T1 - A cobalt-manganese layered oxide/graphene composite as an outstanding oxygen evolution reaction electrocatalyst

AU - Kobayashi, Hiroaki

AU - Sugawara, Yuuki

AU - Yamaguchi, Takeo

AU - Honma, Itaru

N1 - Funding Information: This work was supported by the ‘‘Network Joint Research Center for Materials and Devices: Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials’’ Research Program. H. K. acknowledges financial support by JST ALCA-SPRING Grant JPMJAL1301 and ERCA Environment Research and Technology Development Fund JPMEERF20212R01, and Y. S. acknowledges financial support by JSPS KAKENHI Grant 20K15087. Publisher Copyright: © The Royal Society of Chemistry 2021.

PY - 2021/9/16

Y1 - 2021/9/16

N2 - 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.

AB - 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.

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JO - Chemical Communications

JF - Chemical Communications

SN - 1359-7345

IS - 72

ER -

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

Abstract

ASJC Scopus subject areas

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