Self-supported thin-film electrode consisting of transition metal borides for highly efficient hydrogen evolution  

作　　者：Qi Miao Lihong Bao Yuxin Gao Hao Wang Yongjun Cao Wei Li Lei Li Xiaowei Yang Jijun Zhao Ruguang Ma 

机构地区：[1]College of Physics and Electronic Information,Inner Mongolia Normal University,Hohhot 010022,Inner Mongolia,China [2]Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials,Hohhot,Inner Mongolia,China [3]Inner Mongolia Engineering Research Center for Rare Earth Functional and New Energy Storage Materials,Hohhot,Inner Mongolia,China [4]Key Laboratory of Materials Modification by Laser,Ion and Electron Beams(Dalian University of Technology),Ministry of Education,Dalian 116024,China [5]Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials,School of Physics,South China Normal University,Guangzhou,China [6]School of Materials Science and Engineering,Suzhou University of Science and Technology,Suzhou 215011,China

出　　处：《Carbon Energy》2025年第1期219-231,共13页碳能源(英文)

基　　金：National Natural Science Foundation of China,Grant/Award Number:52172058;Outstanding Youth Fund of Natural Science Foundation of Inner Mongolia Autonomous Region,Grant/Award Number:2023JQ15;Fundamental Research Funds for the Inner Mongolia Normal University,Grant/Award Numbers:2022JBBJ010,2022JBTD008;Major Project Cultivation Fund for the Inner Mongolia Normal University,Grant/Award Number:2020ZD01;Funds for Reform and Development of Local Universities Supported by The Central Government(Cultivation of First-Class Disciplines in Physics);Postdoctoral Fellowship Program of CPSF,Grant/Award Number:GZB20240101;China Postdoctoral Science Foundation,Grant/Award Number:2024M750304.

摘　　要：Transition metal borides(TMBs)are a new class of promising electrocatalysts for hydrogen generation by water splitting.However,the synthesis of robust all-in-one electrodes is challenging for practical applications.Herein,a facile solid-state boronization strategy is reported to synthesize a series of self-supported TMBs thin films(TMB-TFs)with large area and high catalytic activity.Among them,MoB thin film(MoB-TF)exhibits the highest activity toward electrocatalytic hydrogen evolution reaction(HER),displaying a low overpotential(η10=191 and 219 mV at 10 mA cm^(−2))and a small Tafel slope(60.25 and 61.91 mV dec^(−1))in 0.5M H_(2)SO_(4)and 1.0M KOH,respectively.Moreover,it outperforms the commercial Pt/C at the high current density region,demonstrating potential applications in industrially electrochemical water splitting.Theoretical study reveals that both surfaces terminated by TM and B atoms can serve as the active sites and the H*binding strength of TMBs is correlated with the p band center of B atoms.This work provides a new pathway for the potential application of TMBs in largescale hydrogen production.

关 键 词：borides ELECTROCATALYSTS hydrogen evolution reaction thin film 

分 类 号：O646[理学—物理化学]