Microelectrode simulation of anode in polymer electrolyte fuel cells

被引:7
作者
Katakura, K [1 ]
Hinatsu, JT [1 ]
Inatomi, K [1 ]
Inaba, M [1 ]
Ogumi, Z [1 ]
Takehara, Z [1 ]
机构
[1] KYOTO UNIV,GRAD SCH ENGN,DIV ENERGY & HYDROCARBON CHEM,SAKYO KU,KYOTO 60601,JAPAN
来源
DENKI KAGAKU | 1996年 / 64卷 / 06期
关键词
polymer electrolyte fuel cells; Nafion; hydrogen oxidation; platinum microelectrode;
D O I
10.5796/kogyobutsurikagaku.64.711
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Active sites for hydrogen oxidation reaction on anode in Polymer Electrolyte Fuel Cells (PEFC) was simulated by inserting platinum microelectrode into a perfluorinated sulfonic acid particle, Nafion(R) NR50, under hydrogen atmosphere. Hydrogen oxidation current at different insertion depths was measured. For comparison, the current dependencies on the insertion depth was also calculated using a cylindrical diffusion model. The results indicated that hydrogen oxidation reaction at the Nafion/platinum interface proceeds under diffusion limiting conditions assuming a local current density maximum.
引用
收藏
页码:711 / 717
页数:7
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