Oriented arrays of Co3O4 nanoneedles for highly efficient electrocatalytic water oxidation

Jun-Jun Zhang; Tian-Jian Zhao; Hong-Hui Wang; Yun-Xiao Lin; Guang-Yao Zhai; Zhi-Dong Jiang; Shin-Ichi Hirano; Xin-Hao Li; Jie-Sheng Chen

doi:10.1039/C9CC00791A

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Oriented arrays of Co₃O₄ nanoneedles for highly efficient electrocatalytic water oxidation†

Jun-Jun Zhang,

^a Tian-Jian Zhao,^a Hong-Hui Wang,^a Yun-Xiao Lin,^a Guang-Yao Zhai,^a Zhi-Dong Jiang,*^a Shin-Ichi Hirano,^b Xin-Hao Li*^a and Jie-Sheng Chen

Author affiliations

* Corresponding authors

^a School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
E-mail: xinhaoli@sjtu.edu.cn, zdjiang@sjtu.edu.cn

^b Hirano Institute for Materials Innovation, Shanghai Jiao Tong University, Shanghai 200240, P. R. China

Abstract

We described an effective way to generate a Co₃O₄ mesocrystal array with well-developed porosity, simply by uniting a coupled interface with hydrazine treatment. Due to the fast electron transfer and sufficient active sites, the Ti mesh-supported Co₃O₄ nanoneedles electrode could provide a current density of 49.9 mA cm⁻² at 570 mV OER overpotential and has exceptionally high stability.

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Article information

DOI: https://doi.org/10.1039/C9CC00791A
Article type: Communication
Submitted: 28 Jan 2019
Accepted: 28 Feb 2019
First published: 28 Feb 2019

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Chem. Commun., 2019,55, 3971-3974

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Oriented arrays of Co₃O₄ nanoneedles for highly efficient electrocatalytic water oxidation

J. Zhang, T. Zhao, H. Wang, Y. Lin, G. Zhai, Z. Jiang, S. Hirano, X. Li and J. Chen, Chem. Commun., 2019, 55, 3971 DOI: 10.1039/C9CC00791A

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