Effects of Microporous Layer on PBI-based Proton Exchange Membrane Fuel Cell Performance

被引：0

作者：

Liu, Chun-Ting ^{[1
]}

Chang, Min-Hsing ^{[1
]}

机构：

[1] Tatung Univ, Dept Mech Engn, Taipei 104, Taiwan

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2013年 / 8卷 / 03期

关键词：

Polybenzimidazole; Microporous layer; Polytetrafluorethylene; Carbon loading; HIGH-TEMPERATURE PEMFC; LIFE TEST; ELECTROLYTE; DEGRADATION; MEA; VALIDATION; DIAGNOSIS; IMPEDANCE;

D O I：

暂无

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

This study investigates the influence of microporous layer (MPL) on the performance of a high-temperature proton exchange membrane fuel cell utilizing a phosphoric-acid-doped polybenzimidazole (PBI) electrolyte. The effects of MPL compositions including polytetrafluorethylene (PTFE) and carbon black are considered. Under the same catalyst loading, phosphoric acid doping level, and operation conditions, the fuel cell performance is measured to evaluate the importance of MPL and determine the optimal PTFE content and carbon loading. The method of electrochemical impedance spectroscopy is employed to characterize the variations in the ohmic resistance and polarization losses within the cell. The results show that both the PTFE content and carbon loading in the MPL may affect the cell performance significantly. The MPL with a PTFE content of 40 wt% and carbon loading of 1.0 mg cm(-2) is found to give the optimal cell performance.

引用

页码：3687 / 3695

页数：9

共 22 条

[21] Degradation study on MEA in H3PO4/PBI high-temperature PEMFC life test [J].