@article{Huang2024, 
author = {Chengyu Huang and Zhonghong Xia and Jing Wang and Jing Zhang and Chenfei Zhao and Xingli Zou and Shichun Mu and Jiujun Zhang and Xionggang Lu and Hong Jin Fan and Shengjuan Huo and Yufeng Zhao},
title = {Highly efficient and stable electrocatalyst for hydrogen evolution by molybdenum doped Ni-Co phosphide nanoneedles at high current density},
year = {2024},
journal = {Nano Research},
volume = {17},
number = {3},
pages = {1066-1074},
keywords = {transition metal phosphides, Mo-doped NiCoP, hydrogen evolution reaction, gradient hydrothermal, water splitting},
url = {https://www.sciopen.com/article/10.1007/s12274-023-5892-7},
doi = {10.1007/s12274-023-5892-7},
abstract = {There is an increasingly urgent need to develop cost-effective electrocatalysts with high catalytic activity and stability as alternatives to the traditional Pt/C in catalysts in water electrolysis. In this study, microspheres composed of Mo-doped NiCoP nanoneedles supported on nickel foam were prepared to address this challenge. The results show that the nanoneedles provide sufficient active sites for efficient electron transfer; the small-sized effect and the micro-scale roughness enhance the entry of reactants and the release of hydrogen bubbles; the Mo doping effectively improves the electrocatalytic performance of NiCoP in alkaline media. The catalyst exhibits low hydrogen evolution overpotentials of 38.5 and 217.5 mV at a current density of 10 mA·cm−2 and high current density of 500 mA·cm−2, respectively, and only 1.978 V is required to achieve a current density of 1000 mA·cm−2 for overall water splitting. Density functional theory (DFT) calculations show that the improved hydrogen evolution performance can be explained as a result of the Mo doping, which serves to reduce the interaction between NiCoP and intermediates, optimize the Gibbs free energy of hydrogen adsorption ( ΔG*H), and accelerate the desorption rate of  *OH. This study provides a promising solution to the ongoing challenge of designing efficient electrocatalysts for high-current-density hydrogen production.}
}