文献类型：期刊文献

英文题名：Effect of emulsification of catalyst ink on the structure of catalyst layer in PEMFC

作者：Huang, Zhongzheng An, Zhoujian Yang, Daozeng Zhang, Dong Ding, Yong

第一作者：Huang, Zhongzheng

通信作者：An, ZJ[1]

机构：[1]Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China;[2]Tongji Univ, Sch Automot Studies, Shanghai 201804, Peoples R China;[3]Tongji Univ, Clean Energy Automot Engn Ctr, Shanghai 201804, Peoples R China;[4]Guizhou Inst Technol, Sch Aerosp Engn, Guiyang 550025, Peoples R China

第一机构：Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China

通信机构：corresponding author), Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China.

年份：2025

卷号：183

外文期刊名：INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

收录：;EI(收录号：20254119281782);WOS:【SCI-EXPANDED(收录号:WOS:001592461600007)】；

基金：Acknowledgements This work was financially supported by the National Natural Science Foundation of China (52206087; 52130607) ; the Youth Doctor Foundation Project of Gansu Provincial Education Department (2025QB-027) ; the Lanzhou Youth Science and Technology Talent Innovationr Project (2024-QN-18) ; the Science and Technology Project of Gansu province (25CXGA058) ; the Industrial Support Plan Project of Gansu Provincial Education Department (2025CYZC-034) ; the Doctoral Research Funds of Lanzhou University of Technology (061907) ; the Red Willow Excellent Youth Project of Lanzhou University of Technology.

语种：英文

外文关键词：Catalyst ink; Cathode catalyst layer; Morphology characterization; Pore structure; Emulsification method

摘要：The cathode catalyst layer (CCL) as one of the most critical components of the proton exchange membrane fuel cells (PEMFCs), requires precise structural engineering to optimize electrochemical performance, and the cluster structure formed in the catalyst inks directly affects final morphology and catalytic performance of the catalyst layer. In conventional catalyst ink formulations, the low surface tension of alcohols is utilized to disrupt the water film encapsulating catalyst particles, thereby destabilizing agglomerate structures and enabling mechanical dispersion of catalyst particulates. Current studies indicate that cluster sizes in traditional CCL inks typically range from hundreds of nanometers to 1 mu m. This study introduces an emulsification strategy for PEMFC catalyst inks by incorporating ethyl propionate to form water-oil microemulsions. Catalyst inks with increasing oil-phase mass fractions exhibit progressively smaller hydrodynamic cluster diameters. Sufficient emulsification optimizes catalyst layer pore structure. Electrochemical tests confirm significant performance gains: the emulsified system achieves a limiting current density of 3.12 A cm-2 and a peak power density of 1.275 W cm-2 at 2.5 A cm-2, exceeding the conventional water-alcohol system by 20 %.