Interface engineering in the α-Co(OH)2/ZIF-67 heterostructure for enhanced oxygen evolution electrocatalysis

Xue-Zhi Song; Nan Zhang; Zan-Yao Niu; Yu Pan; Xiao-Feng Wang; Zhenquan Tan

doi:10.1039/D1NJ01286J

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Interface engineering in the α-Co(OH)₂/ZIF-67 heterostructure for enhanced oxygen evolution electrocatalysis†

Xue-Zhi Song,

^a Nan Zhang,^a Zan-Yao Niu,^b Yu Pan,

^a Xiao-Feng Wang

*^c and Zhenquan Tan

*^a

Author affiliations

* Corresponding authors

^a State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Panjin Campus, Panjin 124221, China
E-mail: tanzq@dlut.edu.cn

^b Leicester International Institute, Dalian University of Technology, Panjin 124221, China

^c Key Laboratory of Materials Modification by Laser Ion and Electron Beams, Ministry of Education, Dalian University of Technology, Dalian, China
E-mail: wangxf@dlut.edu.cn

Abstract

The confined growth of ZIF-67 (ZIF = zeolitic imidazolate framework) on α-Co(OH)₂ nanosheets has been successfully achieved. The interface coupling in α-Co(OH)₂/ZIF-67 would regulate the electrochemical environment of cobalt at the interface and expose more active sites. As a result, the optimal α-Co(OH)₂/ZIF-67-0.6 catalyst exhibits higher activity (η₁₀ = 320 mV), fast kinetics (Tafel slope of 109.3 mV dec⁻¹), and excellent durability after continuous operation for 24 h.

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Article information

DOI: https://doi.org/10.1039/D1NJ01286J
Article type: Communication
Submitted: 16 Mar 2021
Accepted: 28 Apr 2021
First published: 07 May 2021

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New J. Chem., 2021,45, 10199-10203

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Interface engineering in the α-Co(OH)₂/ZIF-67 heterostructure for enhanced oxygen evolution electrocatalysis

X. Song, N. Zhang, Z. Niu, Y. Pan, X. Wang and Z. Tan, New J. Chem., 2021, 45, 10199 DOI: 10.1039/D1NJ01286J

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