“Similar stacking”-inspired compressive strain of heterogeneous phosphide for efficient hydrogen evolution  

作　　者：Tianyi Xu Dongxu Jiao Jinchang Fan Yilong Dong Zhaoyong Jin Lei Zhang Wei Zhang Jingxiang Zhao Weitao Zheng Xiaoqiang Cui 

机构地区：[1]State Key Laboratory of Automotive Simulation and Control,Key Laboratory of Automobile Materials,Ministry of Education,School of Materials Science and Engineering,Jilin University,Changchun,China [2]College of Chemistry,Jilin University,Changchun,China [3]Key Laboratory of Photonic and Electronic Bandgap Materials,Ministry of Education,College of Chemistry and Chemical Engineering,Harbin Normal University,Harbin,China

出　　处：《Carbon Energy》2025年第2期121-130,共10页碳能源(英文)

基　　金：Self-innovation Capability Construction of Jilin Province Development and Reform Commission,Grant/Award Number:2021C026;National Natural Science Foundation of China,Grant/Award Numbers:12034002,22202080,22279044,51872116;Jilin Province Science and Technology Development Program,Grant/Award Number:20210301009GX。

摘　　要：Strain effects have garnered significant attention in catalytic applications due to their ability to modulate the electronic structure and surface adsorption properties of catalysts.In this study,we propose a novel approach called“similar stacking”for stress modulation,achieved through the loading of Co_(2)P on Ni_(2)P(Ni_(2)P/Co_(2)P).Theoretical simulations reveal that the compressive strain induced by Co_(2)P influences orbital overlap and electron transfer with hydrogen atoms.Furthermore,the number of stacked layers can be adjusted by varying the precursor soaking time,which further modulates the strain range and hydrogen adsorption.Under a 2-h soaking condition,the strain effect proves favorable for efficient hydrogen production.Experimental characterizations using X-ray diffraction,high-angel annular dark-field scanning transmission election microscope(HAADF-STEM),and X-ray absorption near-edge structure spectroscopy successfully demonstrate lattice contraction of Co_(2)P and bond length shortening of Co-P.Remarkably,our catalyst shows an ultrahigh current density of 1 A cm^(-2) at an overpotential of only 388 mV,surpassing that of commercial Pt/C,while maintaining long-term stability.This material design strategy of similar stacking opens up new avenues of strain modulation and the deeper development of electrocatalysts.

关 键 词：compressive strain heterogeneous phosphide hydrogen evolution reaction similar stacking 

分 类 号：O643.36[理学—物理化学]