共 12 条
Study of Anode Catalysts and Fuel Concentration on Direct Hydrazine Alkaline Anion-Exchange Membrane Fuel Cells
被引:101
作者:
Asazawa, Koichiro
[1
,2
]
Sakamoto, Tomokazu
[1
]
Yamaguchi, Susumu
[1
]
Yamada, Koji
[1
]
Fujikawa, Hirotoshi
[1
]
Tanaka, Hirohisa
[1
]
Oguro, Keisuke
[2
,3
]
机构:
[1] Daihatsu Motor Co Ltd, Frontier Technol Res & Dev Div, Shiga 5202593, Japan
[2] Kobe Univ, Kobe, Hyogo 6578501, Japan
[3] Natl Inst Adv Ind Sci & Technol, Osaka 5638577, Japan
关键词:
alkaline fuel cells;
catalysis;
cobalt;
dissociation;
membranes;
nickel;
platinum;
ELECTROLYTE;
D O I:
10.1149/1.3082129
中图分类号:
O646 [电化学、电解、磁化学];
学科分类号:
081704 ;
摘要:
A platinum-free fuel cell using liquid hydrazine hydrate (N(2)H(4)center dot H(2)O) as the fuel and comprised of a cobalt or nickel anode and a cobalt cathode exhibits high performance. In this study, the fuel cell performances using nickel, cobalt, and platinum as anode catalysts are evaluated and compared. It is found that fuel cell performance in the case of nickel and cobalt is higher than that in the case of platinum. Further, anodic reactions are discussed by comparing the hydrazine consumption and ammonia generation when cobalt and nickel are used as anode catalyst. Cobalt exhibits a higher rate of decomposition than nickel. Nickel is found to be the most suitable anode catalyst among the above mentioned anode catalysts for this fuel cell. The influence of hydrazine hydrate and KOH concentrations in the fuel on cell performance is also discussed. Cell performance is the highest at a hydrazine hydrate concentration of 4 M and a KOH concentration of 1 M. The maximum power density of the alkaline anion-exchange membrane fuel cell, comprised of a nickel anode and a Co-PPY-C (cobalt polypyrrole carbon) cathode, is 617 mW cm(-2).
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页码:B509 / B512
页数:4
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