Carbon-incorporated NiO/Co3O4 concave surface microcubes derived from a MOF precursor for overall water splitting

Xijun Wei; Yunhuai Zhang; Huichao He; Di Gao; Jingrui Hu; Huarong Peng; Li Peng; Shenghuan Xiao; Peng Xiao

doi:10.1039/C9CC02037C

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Carbon-incorporated NiO/Co₃O₄ concave surface microcubes derived from a MOF precursor for overall water splitting†

Xijun Wei,

^a Yunhuai Zhang,*^a Huichao He,

*^b Di Gao,

^a Jingrui Hu,^c Huarong Peng,^a Li Peng,^c Shenghuan Xiao^a and Peng Xiao^ac

Author affiliations

* Corresponding authors

^a College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
E-mail: xp2031@163.com

^b State Key Laboratory of Environmental Friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, China
E-mail: hehuichao@swust.edu.cn

^c College of Physics, Chongqing University, Chongqing 400044, China

Abstract

Carbon-incorporated NiO/Co₃O₄ concave surface microcubes (denoted as NCMC) are successfully developed from a precursor of Ni₃[Co(CN)₆]₂ for the first time. The NCMC exhibits excellent electrocatalytic activity for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) in potassium hydroxide solution, affording a current density of 10 mA cm⁻² at 169.5 mV for the HER and 290 mV for the OER, respectively. This communication describes a rational design of MOF-derived mixed metal oxides as electrocatalysts for overall water splitting, promoting the further development of MOF materials in the field of energy conversion.

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Article information

DOI: https://doi.org/10.1039/C9CC02037C
Article type: Communication
Submitted: 13 Mar 2019
Accepted: 06 May 2019
First published: 14 May 2019

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Chem. Commun., 2019,55, 6515-6518

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Carbon-incorporated NiO/Co₃O₄ concave surface microcubes derived from a MOF precursor for overall water splitting

X. Wei, Y. Zhang, H. He, D. Gao, J. Hu, H. Peng, L. Peng, S. Xiao and P. Xiao, Chem. Commun., 2019, 55, 6515 DOI: 10.1039/C9CC02037C

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Chemical Communications