@article{Chen2023, 
author = {Jianpo Chen and Jianping Zheng and Weidong He and Haikuan Liang and Yan Li and Hao Cui and Chengxin Wang},
title = {Self-standing hollow porous Co/a-WOx nanowire with maximum Mott–Schottky effect for boosting alkaline hydrogen evolution reaction},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {4},
pages = {4603-4611},
keywords = {electrocatalyst, hydrogen evolution reaction (HER), Mott–Schottky effect, self-template etching, electron redistribution},
url = {https://www.sciopen.com/article/10.1007/s12274-022-5072-1},
doi = {10.1007/s12274-022-5072-1},
abstract = {The sufficient utilization of Mott–Schottky effect for boosting alkaline hydrogen evolution reaction (HER) depends upon scale minimizing of interface components and exposure maximizing of Mott–Schottky interface. Here, a self-standing porous tubular Mott–Schottky electrocatalyst is constructed by a self-template etching strategy, where amorphous WOx (a-WOx) nano-matrix connects Co nanoparticles. This novel “Janus” electrocatalyst maximizes the Mott–Schottky effect by not only providing a highly exposed micro interface, but also simultaneously accelerating the water dissociation and optimizing the hydrogen desorption process. Experimental findings and theoretical calculations reveal that Co/a-WOx Mott–Schottky heterointerface triggers the electron redistribution and a build-in electric field, which can not only optimize the adsorption energy of the reaction intermediates, but also facilitate the charge transfer. Thus, Co/a-WOx requires an overpotential of only 36.3 mV at 10 mA·cm−2 and shows a small Tafel slope of 53.9 mV·dec−1 as well as an excellent 200-h long-term stability. This work provides a novel design strategy for maximizing the Mott–Schottky effect on promoting alkaline HER.}
}