Study of sintered stainless steel fiber felt as gas diffusion backing in air-breathing DMFC

被引：111

作者：

Liu, JG ^{[1
]}

Sun, GQ ^{[1
]}

Zhao, FL ^{[1
]}

Wang, GX ^{[1
]}

Zhao, G ^{[1
]}

Chen, LK ^{[1
]}

Yi, BL ^{[1
]}

Xin, Q ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Direct Alcohol Fuel Cell Lab, Dalian 116023, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2004年 / 133卷 / 02期

关键词：

direct methanol fuel cell; air-breathing; gas diffusion backing; sintered stainless steel fiber felt;

D O I：

10.1016/j.jpowsour.2004.02.009

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Adoption of a sintered stainless steel fiber felt was evaluated as gas diffusion backing in air-breathing direct methanol fuel cell (DMFC). By using a sintered stainless steel fiber felt as an anodic gas diffusion backing, the peak power density of an air-breathing DMFC is 24 mW cm(-2), which is better than that of common carbon paper. A 30-h-life test indicates that the degraded performance of the air-breathing DMFC is primarily due to the water flooding of the cathode. Twelve unit cells with each has 6 cm(2) of active area are connected in series to supply the power to a mobile phone assisted by a constant voltage diode. The maximum power density of 26 mW cm(-2) was achieved in the stack, which is higher than that in single cell. The results show that the sintered stainless steel felt is a promising solution to gas diffusion backing in the air-breathing DMFC, especially in the anodic side because of its high electronical conductivity and hydrophilicity. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：175 / 180

页数：6

共 16 条

[1] Effects of the cathode gas diffusion layer characteristics on the performance of polymer electrolyte fuel cells [J].