Microdynamic modulation through Pt–O–Ni proton and electron“superhighway”for pH-universal hydrogen evolution  

作　　者：Dewen Wang Yuting Chen Bohan Yao Tian Meng Yanchao Xu Dongxu Jiao Zhicai Xing Xiurong Yang 

机构地区：[1]State Key Laboratory of Electroanalytical Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,Jilin,China [2]University of Science and Technology of China,Hefei 230026,Anhui,China [3]Department of Chemistry,Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Energy Materials for Electric Power,Southern University of Science and Technology,Shenzhen 518055,Guangdong,China [4]State Key Laboratory of Automotive Simulation and Control,School of Materials Science and Engineering,Jilin University,Changchun 130012,jilin,China

出　　处：《Journal of Energy Chemistry》2025年第2期808-815,I0018,共9页能源化学(英文版)

基　　金：supported by the National Natural Science Foundation of China(22202080,22034006 and 22393930);Jilin Talent Development Foundation(E41S2001);the National Key Research and Development Program of China(2022YFF0710000).

摘　　要：Optimizing the microdynamics in alkaline and neutral conditions is a significant but challenging task in developing pH-universal hydrogen evolution(HER)electrocatalysts.Herein,a unique Pt-O-Ni bridge has been constructed to alter the coordination and electronic environment between Pt nanoparticles(Pt_n)and nickel metaphosphate(NPO)substrate(Pt-NPO).Sufficient electron transfer from NPO to Pt_n to maintain an electron-rich environment and a low valence state of Pt_n.Furthermore,H*is produced from the H_(2)O dissociation on Ni site and then spillover toward Pt sites to bind into H_(2),which makes up for the insufficient H_(2)O dissociation ability of Pt in Volmer step.Pt-NPO exhibits long-term stability and only need the overpotentials of 22.3,33.0 and 30.5 mV to attain 10 mA cm^(-2)in alkaline,neutral and acidic media,respectively.The anion-exchange membrane(AEM)water electrolyzer catalyzed by Pt-NPO shows high water electrolysis performance that a cell voltage of 1.73 V is needed to obtain the current density of500 mA cm^(-2)in 1 M KOH at 80℃,at the same time maintains good stability for 350 h.The regulation strategy proposed in this work is helpful for the design and synthesis of highly efficient pH-universal HER electrocatalysts.

关 键 词：Hydrogen evolution reactions pH-universal HER electrocatalysts Metal-support interactions Microdynamics Atomic and electronic regulation 

分 类 号：TQ116.2[化学工程—无机化工] TQ426