催化层/微孔层界面设计对PEMFC影响研究

doi:10.19562/j.chinasae.qcgc.2025.01.008

Abstract

Abstract:

In addition to the design and optimization of the catalyst layer （CL）， the interface between CL and the microporous layer （MPL） also needs to be considered for the research of membrane electrode assembly （MEA）. In this paper， three different CL/MPL interface structures are fabricated to verify their effect on PEMFC performance and durability under simulated vehicle operating conditions. The performance test results show that the performance of the MEA sample obtained by introducing Nafion ionomers into the CL/MPL interface （MEA-Nafion） decreases slightly compared with the pristine sample （MEA-0） at high current density， whereas the performance of the MEA sample obtained by introducing Nafion ionomers into the CL/MPL interface followed by hot pressing （MEA-Nafion-HP） is basically the same as that of MEA-0. Specially， the durability test results under simulated vehicle conditions show that the voltage decay rates of MEA-0， MEA-Nafion， and MEA-Nafion-HP samples are 42.3， 29.9 and 15.2 μV/h， respectively. In conclusion， the MEA durability can be greatly improved without affecting performance by optimizing the CL/PEM interface structure design.

Key words: proton exchange membrane fuel cell, catalyst layer/microporous layer interface, performance, durability

Guangwei Li,Xue Han,Danmin Xing,Pingwen Ming. Research on Effect of Catalyst Layer/Microporous Layer Interface Design on the PEMFC[J].Automotive Engineering, 2025, 47(1): 77-84.

Figures/Tables 17

References 25

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Research on Effect of Catalyst Layer/Microporous Layer Interface Design on the PEMFC

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