Construction of pH-universal hydrogen evolution freeway in MoO_(3)-MoNi_(4)@Cu core-shell nanowires via synergetic electronic and geometric effect  

作　　者：Xiaodong Chen Shoufu Cao Xiaojing Lin Xiaofei Wei Zhaojie Wang Hongyu Chen Chengcheng Hao Siyuan Liu Shuxian Wei Daofeng Sun Xiaoqing Lu 

机构地区：[1]School of Materials Science and Engineering,China University of Petroleum(East China),Qingdao 266580,China [2]College of Science,China University of Petroleum(East China),Qingdao 266580,China

出　　处：《Nano Research》2023年第10期12253-12262,共10页纳米研究（英文版）

基　　金：the National Natural Science Foundation of China(No.22101300);the Shandong Natural Science Foundation(Nos.ZR2020ME053,ZR2020QB027,and ZR2022ME105);State Key Laboratory of Enhanced Oil Recovery of Open Fund Funded Project(No.2022-KFKT-28);Major Special Projects of China National Petroleum Corporation(No.2021ZZ01-05);the Fundamental Research Funds for the Central Universities(Nos.22CX03010A,20CX06007A,and 22CX01002A-1).

摘　　要：Both the adsorption/dissociation of water molecules and hydrogen intermediate(H*)are the major limitations to hydrogen evolution reaction(HER).Herein,the modulation of electronic structure and geometric configuration are combined to design onedimensional electrocatalyst with outstanding HER activity in a wide pH range.The catalyst was composed of molybdenum trioxide doped molybdenum nickel alloy supported by copper nanowires(MoO_(3)-MoNi_(4)@Cu NWs).As revealed by the experimental characterizations and theoretical calculations,Cu NWs act as the electron donator to MoNi4,resulting in up shift of the d-band center in MoNi4,thus expediting H_(2)O adsorption and dissociation.Moreover,the introduction of amorphous MoO_(3) sets up a unique geometric configuration on MoNi4 for the accelerated H*transfer via hydrogen-bond and hydrogen spillover.This work provides a synergetic route for constructing HER freeway and promotes further investigations on more versatile electrocatalysis involving H_(2)O or H*.

关 键 词：pH-universal hydrogen evolution reaction(HER) electronic structure geometric configuration HYDROGEN-BOND hydrogen spillover 

分 类 号：TB383[一般工业技术—材料科学与工程]