Activation methods and underlying performance boosting mechanisms within fuel cell catalyst layer  

作　　者：Miao Ma Lixiao Shen Zigang Zhao Pan Guo Jing Liu Bin Xu Ziyu Zhang Yunlong Zhang Lei Zhao Zhenbo Wang 

机构地区：[1]MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage,State Key Laboratory of Space Power-Sources,School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin 150001,China [2]Shenzhen Key Laboratory of Special Functional Materials,Shenzhen Engineering Laboratory for Advance Technology of Ceramics,Guangdong Research Center for Interfacial Engineering of Functional Materials,College of Materials Science and Engineering,Shenzhen University,Shenzhen 518060,China [3]Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education,Department of Materials Science and Engineering,Harbin Engineering University,Harbin 150001,China [4]Unipower Hydrogen Technology(Jiangsu)Corporation,No.625,Wujin East Avenue,Wujin District,Changzhou 213176,China

出　　处：《eScience》2024年第6期22-44,共23页电化学与能源科学(英文)

基　　金：supported by the National Natural Science Foundation of China(Grant No.51802059,21905070,22075062);Shenzhen Science and Technology Program(JCYJ20210324120400002,and SGDX20210823103803017);Key Research and Development Program of Shandong Province(2022CXGC010305);Heilongjiang Postdoctoral Fund(LBH-Z18066);Heilongjiang Touyan Team(Grant No.HITTY-20190033);the Fundamental Research Funds for the Central Universities(Grant No.FRFCU5710051922);High-Level Professional Team in Shenzhen(Grant No.KQTD20210811090045006);Guangdong Basic and Applied Basic Research Foundation(2022B1515120001).

摘　　要：Proton exchange membrane fuel cells(PEMFCs)have been widely acknowledged as a significant advancement in achieving sustainable energy conversion.However,the activation of newly established Pt-ionomer interfaces in the catalyst layer of PEMFCs can be a time-consuming and costly process to ensure proper coupling and performance.In order to gain valuable insights into this crucial activation process,we have conducted a comprehensive analysis and comparison of the commonly employed on-line(such as current or voltage control activation,short-circuiting activation,and air interruption activation)and off-line(including boiling or steaming,acidtreatment,and ultrasonic-treatment)activation methods.Our findings shed light on the underlying mechanisms that contribute to enhanced performance within the catalyst layer,such as the reduction of Pt oxides and hydroxides,improved proton transport,and the reduction of“dead”regions.Moreover,this review emphasizes the significant challenges and future opportunities that lie in further enhancing the performance within the catalyst layer through the activation process.

关 键 词：Activation methods Pt Pt-alloy and Pt-free catalysts Pt-ionomer interface Proton exchange membrane fuel cells 

分 类 号：O64[理学—物理化学]