Investigating the acceleration factors of proton exchange membrane fuel cell degradation

被引：1

作者：

Huang, Pengtao ^{[1
,2
]}

Li, Shang ^{[1
,2
,3
]}

Zhang, Xiaoyu ^{[1
,2
]}

Yi, Shaojie ^{[1
,2
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Luoshi Rd 122, Wuhan 430070, Peoples R China

[2] Guangdong Lab, Foshan Xianhu Lab Adv Energy Sci & Technol, Xianhu Hydrogen, Zhuhai, Peoples R China

[3] Wuhan Univ Technol, Hubei Key Lab Fuel Cells, Wuhan 430070, Peoples R China

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2023年 / 18卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Proton exchange membrane fuel cell; Square wave; Accelerated stress test; Acceleration factor; Electrochemical active surface area; CATALYST; PERFORMANCE; DURABILITY; DIAGNOSTICS;

D O I：

10.1016/j.ijoes.2023.100184

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this work, a voltage square wave was used as accelerated stress test (AST) to assess the cathode catalyst durability in membrane electrode assemblies (MEAs) of the proton exchange membrane fuel cells (PEMFCs). The degradation of MEAs was investigated under square waves with dwell time of 3 s (SW-3 s) and 6 s (SW-6 s). AST conditions and the difference of impact between both ASTs conditions was calculated by using the degradation of electrochemical active surface area (ECSA) as an indicator. The platinum particle sizes of the cathode catalyst before and after the accelerated testing were characterized by transmission electron microscopy (TEM) and its correlation with ECSA was regarded. Finally, the loss of ECSA is used as an indicator to calculate the acceleration factor between AST and steady-state durability testing for 7500 h. The acceleration factor (fECSA) was estimated to be 150 by only regarding the ECSA.

引用

页数：6

共 29 条

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