@article{Zhang2022, 
author = {Lili Zhang and Yuanting Lei and Danni Zhou and Chengli Xiong and Zhuoli Jiang and Xinyuan Li and Huishan Shang and Yafei Zhao and Wenxing Chen and Bing Zhang},
title = {Interfacial engineering of 3D hollow CoSe2@ultrathin MoSe2 core@shell heterostructure for efficient pH-universal hydrogen evolution reaction},
year = {2022},
journal = {Nano Research},
volume = {15},
number = {4},
pages = {2895-2904},
keywords = {transition metal selenides, hydrogen evolution reaction, core@shell heterostructure, pH-universal},
url = {https://www.sciopen.com/article/10.1007/s12274-021-3887-9},
doi = {10.1007/s12274-021-3887-9},
abstract = {Rational design and construction of low-cost and highly efficient electrocatalysts for hydrogen evolution reaction (HER) is meaningful but challenging. Herein, a robust three dimensional (3D) hollow CoSe2@ultrathin MoSe2 core@shell heterostructure (CoSe2@MoSe2) is proposed as an efficient HER electrocatalyst through interfacial engineering. Benefitting from the abundant heterogeneous interfaces on CoSe2@MoSe2, the exposed edge active sites are maximized and the charge transfer at the hetero-interfaces is accelerated, thus facilitating the HER kinetics. It exhibits remarkable performance in pH-universal conditions. Notably, it only needs an overpotential (η10) of 108 mV to reach a current density of 10 mA·cm−2 in 1.0 M KOH, outperforming most of the reported transition metal selenides electrocatalysts. Density functional theory (DFT) calculations unveil that the heterointerfaces synergistically optimize the Gibbs free energies of H2O and H* during alkaline HER, accelerating the reaction kinetics. The present work may provide new construction guidance for rational design of high-efficient electrocatalysts.}
}