Cell performances of direct methanol fuel cells with grafted membranes

被引:62
作者
Hatanaka, T [1 ]
Hasegawa, N [1 ]
Kamiya, A [1 ]
Kawasumi, M [1 ]
Morimoto, Y [1 ]
Kawahara, K [1 ]
机构
[1] Toyota Cent Res & Dev Labs Inc, Nagakute, Aichi 4801192, Japan
关键词
direct methanol fuel cell; grafted membrane; cell performance;
D O I
10.1016/S0016-2361(02)00164-3
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Cell performances were evaluated with grafted polymer membranes as an electrolyte for a direct methanol fuel cell (DMFC). The membranes were prepared using a poly(ethylene-tetrafluoroethylene), or ETFE, film. The base polymer film was added to sulfonic groups using gamma-radiation activated grafting technique as ion-exchange groups. These membranes had more suitable properties for DMFCs, i.e. higher electric conductivity and lower methanol permeability than perfluorinated ionomer membrane (Nafion). Nevertheless, the cell performance with the grafted membrane was inferior to that with Nation. The analysis of electrode potentials vs. reversible hydrogen electrode showed larger activation overpotential for both the electrodes on the grafted membranes. We concluded that this is due to poor bonding of the catalyst layers to the grafted membranes. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:2173 / 2176
页数:4
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