direct methanol fuel cell;
mass transport;
methanol crossover;
D O I:
10.1016/S0378-7753(99)00303-1
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:
The performance of a Liquid feed direct methanol fuel cell based on a Nafion(R) solid polymer electrolyte membrane is reported. The cell utilises a porous Pt-Ru-carbon supported catalyst anode. The effect of cell temperature, air cathode pressure, methanol fuel flow rate and methanol concentration on the power performance of a small-scale (9 cm(2) area) cell is described. Data reported is analysed in terms of semi-empirical models for the effect of methanol crossover by diffusion on cathode potential and thus cell voltage. Mass transfer characteristics of the anode reaction are interpreted in terms of the influence of carbon dioxide gas evolution and methanol diffusion in the carbon cloth diffusion layer. Preliminary evaluation of reaction orders and anode polarisation agree with a previous suggested mechanism for methanol oxidation involving a rate limiting step of surface reaction between adsorbed CO and OH species. (C) 1999 Elsevier Science S.A. All rights reserved.
机构:
Korea Inst Energy Res, Adv Fuel Cell Res Ctr, 71-2 Jang Dong, Daejeon 305343, South KoreaKorea Inst Energy Res, Adv Fuel Cell Res Ctr, 71-2 Jang Dong, Daejeon 305343, South Korea
Jung, Eun-Mi
Rhee, Young-Woo
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机构:
Chungnam Natl Univ, Dept Chem Engn, Daejeon 305764, South KoreaKorea Inst Energy Res, Adv Fuel Cell Res Ctr, 71-2 Jang Dong, Daejeon 305343, South Korea
Rhee, Young-Woo
Peck, Dong-Hyun
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机构:
Korea Inst Energy Res, Adv Fuel Cell Res Ctr, 71-2 Jang Dong, Daejeon 305343, South KoreaKorea Inst Energy Res, Adv Fuel Cell Res Ctr, 71-2 Jang Dong, Daejeon 305343, South Korea
Peck, Dong-Hyun
Lee, Byoung-Rok
论文数: 0引用数: 0
h-index: 0
机构:
Korea Inst Energy Res, Adv Fuel Cell Res Ctr, 71-2 Jang Dong, Daejeon 305343, South KoreaKorea Inst Energy Res, Adv Fuel Cell Res Ctr, 71-2 Jang Dong, Daejeon 305343, South Korea
Lee, Byoung-Rok
Kim, Sang-Kyung
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h-index: 0
机构:
Korea Inst Energy Res, Adv Fuel Cell Res Ctr, 71-2 Jang Dong, Daejeon 305343, South KoreaKorea Inst Energy Res, Adv Fuel Cell Res Ctr, 71-2 Jang Dong, Daejeon 305343, South Korea
Kim, Sang-Kyung
Jung, Doohwan
论文数: 0引用数: 0
h-index: 0
机构:
Korea Inst Energy Res, Adv Fuel Cell Res Ctr, 71-2 Jang Dong, Daejeon 305343, South KoreaKorea Inst Energy Res, Adv Fuel Cell Res Ctr, 71-2 Jang Dong, Daejeon 305343, South Korea
Jung, Doohwan
[J].
JOURNAL OF THE KOREAN ELECTROCHEMICAL SOCIETY,
2008,
11
(01):
: 1
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5