Assembling 2D Ni-Co Nanosheets onto Mo_(2)C Nanorod towards Efficient Electrocatalytic Hydrogen Evolution  

作　　者：Xiao Zhang Yanan Diao Huizhu Cai Jiancong Fang Bingbing Chen Mingshu Bi Chuan Shi 

机构地区：[1]State Key Laboratory of Fine Chemicals,School of Chemistry,Dalian University of Technology,Dalian,Liaoning 116024,China [2]State Key Laboratory of Fine Chemicals,School of Chemical Engineering,Dalian University of Technology,Dalian,Liaoning 116024,China

出　　处：《Chinese Journal of Chemistry》2024年第22期2743-2750,共8页中国化学（英文版）

基　　金：supported by the National Key R&D Program of China(Nos.2021YFA1501102,2023YFA1506602);the National Natural Science Foundation of China(Nos.21932002,22276023 and 21902018);the National High-Level Talents Special Support Program,the Outstanding Young Scientific Talent of Dalian(2023RY011);the Fundamental Research Funds for the Central Universities(DUT20ZD205,DUT22ZD212,DUT21RC(3)095,and DUT22LAB602);Liaoning Binhai Laboratory Project(LBLF-202306);the Star Ocean Outstanding Young Talents Program.

摘　　要：A novel electrocatalyst,Ni-Co/β-Mo_(2)C@C,was rationally designed to enhance the efficiency of the hydrogen evolution reaction(HER)in this work.Assembled with two-dimensional Ni-Co nanosheets onto Mo_(2)C nanorods coated with a thin carbon shell,the catalyst demonstrates remarkable performance,including low overpotential(η_(10)=57 mV)and reduced Tafel slope(63 mV·dec^(–1))in 0.5 mol·L^(–1)H_(2)SO_(4) electrolyte.This innovative design strategy provides abundant active sites and efficient electron/ion transport pathways,effectively shortening reactant diffusion distances and enhancing electrocatalytic activity.Additionally,the carbon shell coating protects the catalyst from etching and agglomeration,ensuring its durability.This work presents a promising approach for engineering highly efficient metal carbide-based HER catalysts through tailored composition and nanostructure design.

关 键 词：Multiscale structure NANORODS Molybdenum carbide Ni-Co doping Support-metal strong interaction Non-noble metal electrocatalyst Hydrogen evolution reaction Acidicmedia 

分 类 号：O643.3[理学—物理化学]