In situ electrochemical construction of Co/CoP crystalline-amorphous hetero-phase catalysts for highly efficient electrocatalytic hydrogen evolution

Yali Wu; Di Gao; Lu Huang; Huihui Shi; Peixin Yang; Jiangna Guo; Ming Zhou; Peng Xiao; Yunhuai Zhang

doi:10.1039/d2cc06959h

In situ electrochemical construction of Co/CoP crystalline-amorphous hetero-phase catalysts for highly efficient electrocatalytic hydrogen evolution

Chem Commun (Camb). 2023 Feb 23;59(17):2429-2432. doi: 10.1039/d2cc06959h.

Authors

Yali Wu¹, Di Gao¹, Lu Huang¹, Huihui Shi¹, Peixin Yang², Jiangna Guo¹, Ming Zhou¹, Peng Xiao², Yunhuai Zhang¹

Affiliations

¹ College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 401331, China. mingzhou@cqu.edu.cn.
² Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing 401331, China. xiaopeng@cqu.edu.cn.

PMID: 36753051
DOI: 10.1039/d2cc06959h

Abstract

Herein we develop a facile, one-step electrochemical approach for the in situ construction of a Co/CoP crystalline-amorphous hetero-phase catalyst towards the hydrogen evolution reaction (HER). The unique catalyst demonstrates a low overpotential of 83 mV at 10 mA cm^-2 with a small Tafel slope of 55.3 mV dec^-1 in 1.0 M KOH. The Co/CoP crystalline-amorphous hetero-phase is highly conducive to regulating the Co-P electronic structure and weakening the H atom adsorption, thus markedly boosting the HER performance. This work offers an innovative strategy to develop a highly efficient transition metal phosphide electrocatalyst with a novel structure.