@article{Xu2023, 
author = {Tianyi Xu and Ruoyu Li and Lei Zhang and Dongxu Jiao and Yilong Dong and Ming Gong and Dantong Zhang and Jinchang Fan and Dewen Wang and Yanhua Liu and Xiao Zhao and Wei Zhang and Weitao Zheng and Xiaoqiang Cui},
title = {Outer delocalized electron aggregation of bromide bridged core–shell CuBr@C for hydrogen evolution reaction},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {5},
pages = {6608-6614},
keywords = {hydrogen evolution reaction, bridge Br atoms, C-shell wrapped CuBr, delocalized electron aggregation, core–shell nanorods},
url = {https://www.sciopen.com/article/10.1007/s12274-023-5391-x},
doi = {10.1007/s12274-023-5391-x},
abstract = {Modulation of the surface electron distribution is a challenging problem that determines the adsorption ability of catalytic process. Here, we address this challenge by bridging the inner and outer layers of the core–shell structure through the bridge Br atom. Carbon shell wrapped copper bromide nanorods (CuBr@C) are constructed for the first time by chemical vapour deposition with hexabromobenzene (HBB). HBB pyrolysis provides both bridge Br atom and C shells. The C shell protects the stability of the internal halide structure, while the bridge Br atom triggers the rearrangement of the surface electrons and exhibits excellent electrocatalytic activity. Impressively, the hydrogen evolution reaction (HER) activity of CuBr@C is significantly better than that of commercial N-doped carbon nanotubes, surpassing commercial Pt/C at over 200 mA·cm−2. Density functional theory (DFT) calculations reveal that bridge Br atoms inspire aggregation of delocalized electrons on C-shell surfaces, leading to optimization of hydrogen adsorption energy.}
}