Ethylenediamine tetramethylenephosphonic acid boosting the electrocatalytic interface construct and proton transfer for high-temperature polymer electrolyte membrane fuel cells  

作　　者：Dongcai Zhang Yangyang Zhou Yanwei Zhu Shiqian Du Gen Huang Jiaqi Lin Peng Long Tehua Wang Li Tao Xian-Zhu Fu Shuangyin Wang 

机构地区：[1]College of Materials Science and Engineering.Shenzhen University,Shenzhen 518060,Guangdong,China [2]State Key Laboratory of Chem/Bio-Sensing and Chemometrics,Provincial Hunan Key Laboratory for Graphene Materials and Devices,College of Chemistry and Chemical Engineering,the National Supercomputer Centers in Changsha,Hunan University,Changsha 410082,Hunan,China [3]Shenzhen Research Institute Hunan University,Shenzhen 518000,Guangdong,China [4]College of Chemistry and Chemical Engineering,Jiangxi Science and Technology Normnal University,Nanchang 330013,Jiangxi,China

出　　处：《Journal of Energy Chemistry》2024年第12期159-164,共6页能源化学（英文版）

基　　金：financially supported by the National Key R&D Program of China (2021YFA 1500900);the National Natural Science Foundation of China (Grant No.:22425021, 22102053);the Provincial Natural Science Foundation of Hunan (2024JJ2012);the Science and Technology Innovation Program of Hunan Province (Grant Nos.2022RC1036);the Top ten Technological Breakthrough Projects in Hunan Province (2023GK1050);the Guangdong Basic and Applied Basic Research Foundation (2024A1515012889);the Shenzhen Science and technology program (JCYJ20210324122209025);the Major Program of the Natural Science Foundation of Hunan Province(2021JC0006)。

摘　　要：High-temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) show excellent application prospects due to its enhanced tolerance of hydrogen impurity.However,the sluggish electrode kinetics caused by its inefficient electrocatalytic interface and proton transfer severely restricts its performance.To overcome the sluggish electrode kinetics,the ethylenediamine tetramethylenephosphonic acid(EDTMPA) was successfully incorporated into the catalysts layer to regulate the phosphoric acid (PA) distribution to boost the electrocatalytic reaction interface and proton transfer,thus increasing the output power and stability of HT-PEMFCs.The hydrophilic H_(2)PO_(4)^(-) and electron donor N atom of EDTMPA could efficiently decrease the absorption of PA on the catalyst surface and facilitate proton transportation in the membrane electrode,as demonstrated by our experiments.The fuel cell assembled with the prepared membrane electrode shows a high reactivity of 1175 mW cm^(-2)and excellent stability,which is much better than the past reference report.The results of this work provide new insights into the utilization of small molecules with phosphate groups to enhance phosphate tolerance and proton conduction,and there is also a further improvement in the reactivity,durability,and utilization of the electrocatalysts in HT-PEMFCs.

关 键 词：Fuel cells Electrocatalytic interface ELECTROCATALYSTS Activity Pt 

分 类 号：TM911.4[电气工程—电力电子与电力传动] O643.36[理学—物理化学]