Ultrathin ternary PtNiGa nanowires for enhanced oxygen reduction reaction

作     者：Giday Fisseha Yiping Hu Yanan Yu Shaojie Lu Dongsheng Ma Pei Nian Zheng Wang Qin Yue Giday Fisseha;Yiping Hu;Yanan Yu;Shaojie Lu;Dongsheng Ma;Pei Nian;Zheng Wang;Qin Yue

作者机构：Institute of Fundamental and Frontier SciencesUniversity of Electronic Science and Technology of ChinaChengdu 610054China State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical EngineeringSchool of Chemistry and Chemical EngineeringNingxia UniversityYinchuan 750021China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2024年第35卷第2期

页      面：599-603页

核心收录：

学科分类：0808[工学-电气工程] 07[理学] 08[工学] 070205[理学-凝聚态物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by the National Youth Top-notch Talent Support Program of China,and the Sichuan Science and Technology Program(No.2020YJ0243) Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering(No.2022-K28) 

主　　题：Ultrathin nanowires Gallium Oxygen reduction reaction Ternary alloy Durability 

摘      要：Achieving high activity and durability for the oxygen reduction reaction(ORR)with an ultra-low amount of platinum is significant to promote the widespread application of proton exchange membrane fuel cells(PEMFCs).Here we report a new ultrathin(∼1 nm)ternary PtNiGa alloy nanowires(PtNiGa NWs)electrocatalyst,in which the presence of gallium(Ga)enhances the oxidation resistance of platinum(Pt)and nickel(Ni)and suppresses the dissolution of *** mass and specific activities of PtNiGa NWs are about 11.2 and 7.6 times higher than those of commercial Pt/C catalysts for ***,the mass activity of PtNiGa/C NWs nanocatalyst decreased only by 12.8%and largely retained its electrochemical surface area(ECSA)after 10,000 potential cycles,compared with 38%loss of ECSA for commercial Pt/C ***,this work provides a general guideline for preparing ternary alloy electrocatalysts and enhancing the activity and stability of the cathode ORR reaction of PEMFCs.