@article{Zhang2021, 
author = {Bowei Zhang and Chaojiang Li and Jun Hu and Dongdong Peng and Kang Huang and Junsheng Wu and Zhong Chen and Yizhong Huang},
title = {Cobalt tungsten phosphide with tunable W-doping as highly efficient electrocatalysts for hydrogen evolution reaction},
year = {2021},
journal = {Nano Research},
volume = {14},
number = {11},
pages = {4073-4078},
keywords = {hydrogen evolution reaction, cobalt tungsten phosphide, W-doping, tunable composition, acid and alkaline media},
url = {https://www.sciopen.com/article/10.1007/s12274-021-3342-y},
doi = {10.1007/s12274-021-3342-y},
abstract = {It has been of interest in seeking electrocatalysts that could exercise equally high-efficient and durable hydrogen evolution upon nonselective electrolytes in both acidic and alkaline environments. Herein, we report a facile strategy to fabricate cobalt tungsten phosphides (CoxW2−xP2/C) hollow polyhedrons with tunable composition based on metal-organic frameworks (MOFs) template method. By the deliberate control of W doping, the synthesized catalyst with the composition of Co0.9W1.1P2/C is found to be able to achieve a current density of 10 mA·cm−2 at overpotentials of 35 and 54 mV in acidic and alkaline media, respectively. This combined electrochemical property stands atop the state-of-the-art electrocatalyst counterparts. To unveil the peculiar behavior of the structure, density functional theory (DFT) calculation was implemented and reveals that the surface W-doping facilitates the optimization of hydrogen absorption free energy (ΔGH*) as well as the thermodynamic and kinetics barriers for water dissociation, which is coupled with the hollow structure of Co-W phosphides, leading to the prominent HER catalytic performance.}
}