MOF-derived hierarchical 3D bi-doped CoP nanoflower eletrocatalyst for hydrogen evolution reaction in both acidic and alkaline media

Lei Guo; Xue Bai; Hui Xue; Jing Sun; Tianshan Song; Shuai Zhang; Ling Qin; Keke Huang; Feng He; Qin Wang

doi:10.1039/C9CC09684A

MOF-derived hierarchical 3D bi-doped CoP nanoflower eletrocatalyst for hydrogen evolution reaction in both acidic and alkaline media†

Lei Guo,‡^a Xue Bai,‡^a Hui Xue,*^a Jing Sun,^a Tianshan Song,^a Shuai Zhang,^a Ling Qin,^a Keke Huang,

^b Feng He

^cd and Qin Wang

*^a

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* Corresponding authors

^a College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China
E-mail: qinwang@imu.edu.cn

^b State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130022, P. R. China

^c Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China

^d University of Chinese Academy of Sciences, Beijing 100190, P. R. China

Abstract

A 3D hierarchical Bi-doped CoP nanoflower electrocatalyst has been developed based on a MOF self-sacrifice strategy. 3% Bi/CoP delivers a current density of 10 mA cm⁻² at low overpotentials of 122 mV in alkaline electrolyte and 150 mV in acidic electrolyte, respectively. DFT calculations demonstrate that Bi doping can synergistically optimize the binding free energy of H* on the CoP (202) facet and ultimately improve the HER performance.

Chemical Communications

MOF-derived hierarchical 3D bi-doped CoP nanoflower eletrocatalyst for hydrogen evolution reaction in both acidic and alkaline media†

Abstract

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MOF-derived hierarchical 3D bi-doped CoP nanoflower eletrocatalyst for hydrogen evolution reaction in both acidic and alkaline media

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