Fluorination-enabled interface of PtNi electrocatalysts for highperformance high-temperature proton exchange membrane fuel cells

作     者：Peng Long Shiqian Du Qie Liu Li Tao Cong Peng Tehua Wang Kaizhi Gu Chao Xie Yiqiong Zhang Ru Chen Shanfu Lu Yi Cheng Wei Feng Shuangyin Wang 龙鹏;杜石谦;刘切;陶李;彭聪;王特华;顾开智;谢超;张怡琼;陈如;卢善富;程义;封伟;王双印

作者机构：State Key Laboratory of Chem/Bio-Sensing and ChemometricsProvincial Hunan Key Laboratory for Graphene Materials and DevicesAdvanced Catalytic Engineering Research Center of the Ministry of EducationCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha410082China School of Materials Science and EngineeringTianjin UniversityTianjin300072China College of Materials Science and EngineeringChangsha University of Science&TechnologyChangsha410083China Beijing Key Laboratory of Bioinspired Energy Materials and DevicesSchool of Space and EnvironmentBeihang UniversityBeijing100191China 

出 版 物：《Science China Materials》 (中国科学（材料科学（英文版）)

年 卷 期：2022年第65卷第4期

页      面：904-912页

核心收录：

学科分类：0808[工学-电气工程] 081705[工学-工业催化] 0806[工学-冶金工程] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：supported by the National Key R&D Program of China(2020YFA0710000) the National Natural Science Foundation of China(21825201,U19A2017) the Provincial Natural Science Foundation of Hunan(2019GK2031,2016TP1009,2020JJ5045) China Postdoctoral Science Foundation(2020M682541) the Science and Technology Innovation Program of Hunan Province,China(2020RC2020) Changsha Municipal Natural Science Foundation(kq2007009) 

主　　题：fuel cells fluorinated carbon interaction activity stability 

摘      要：High-temperature proton exchange membrane fuel cells(HT-PEMFCs)bring new opportunities for portable power generation due to their outstanding advantages such as high tolerance to fuel/air impurities and simplified heat/water ***,carbon-supported nanostructured Pt-based catalysts running at temperatures over 150℃are challenged by the severe aggregation and carbon corrosion,thus leading to poor ***,we demonstrate that dendritic Pt-Ni nanoparticles supported on fluorinated carbon black(white carbon black)could significantly enhance the performance and durability of HT-PEMFCs as the cathode catalysts running at 160℃due to the strong interaction of the F and Ni atoms to form a Ni_(x)F_(y) interface on Pt-Ni *** the formation of a stable Ni_(x)F_(y) interface,this integrated HT-PEMFC reached peak power densities of 906 mW cm^(−2) and demonstrated excellent durability at 160℃ under anhydrous H_(2)/O_(2) *** mitigation strategy was applied to Pt-alloy/C electrocatalysts and resulted in the elimination of Pt dissolution in practical fuel cells.