Electron-distribution control via Pt/NC and MoC/NC dual junction:Boosted hydrogen electro-oxidation and theoretical study  

作　　者：Feng Zhou Xiaofeng Ke Yihuang Chen Mei Zhao Yun Yang Youqing Dong Chao Zou Xi’an Chen Huile Jin Lijie Zhang Shun Wang 

机构地区：[1]Key Laboratory of Carbon Materials of Zhejiang Province,College of Chemistry and Materials Engineering,Wenzhou University,Wenzhou 325000,Zhejiang,China [2]Zhejiang Engineering Research Center for Electrochemical Energy Materials and Devices,Institute of New Materials&Industry Technology,Wenzhou University,Wenzhou 325000,Zhejiang,China

出　　处：《Journal of Energy Chemistry》2024年第1期513-520,I0011,共9页能源化学（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.52072272,52171145 and 22109120);the Zhejiang Provincial Natural Science Foundation of China (LQ21B030002);the Zhejiang Provincial Special Support Program for High-level Talents (2019R52042);the Key programs for Science and Technology Innovation of Wenzhou (ZG2022037)。

摘　　要：The scarcity,high cost and susceptibility to CO of Platinum severely restrict its application in alkaline hydrogen oxidation reaction(HOR).Hybridizing Pt with other transition metals provides an effective strategy to modulate its catalytic HOR performance,but at the cost of mass activity due to the coverage of modifiers on Pt surface.Herein,we constructed dual junctions'Pt/nitrogen-doped carbon(Pt/NC)andδ-MoC/NC to modify electronic structure of Pt via interfacial electron transfer to acquire Pt-MoC@NC catalyst with electron-deficient Pt nanoparticles,simultaneously endowing it with high mass activity and durability of alkaline HOR.Moreover,the unique structure of Pt-MoC@NC endows Pt with a high COtolerance at 1,000 ppm CO/H_(2),a quality that commercial Pt-C catalyst lacks.The theoretical calculations not only confirm the diffusion of electrons from Pt/NC to Mo C/NC could occur,but also demonstrate the negative shift of Pt d-band center for the optimized binding energies of*H,*OH and CO.

关 键 词：Hydrogen oxidation reaction Dual junctions CO-tolerance PLATINUM 

分 类 号：TB33[一般工业技术—材料科学与工程] TM911.4[电气工程—电力电子与电力传动]