Performance evaluation of passive DMFC single cells

被引：91

作者：

Bae, Byungchan ^{[1
]}

Kho, Beck Kyun ^{[1
]}

Lim, Tae-Hoon ^{[1
]}

Oh, In-Hwan ^{[1
]}

Hong, Seong-Ahn ^{[1
]}

Ha, Heung Yong ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Fuel Cell Res Ctr, Seoul 136791, South Korea

来源：

JOURNAL OF POWER SOURCES | 2006年 / 158卷 / 02期

关键词：

passive direct methanol fuel cell; methanol concentration; reactants supply; catalyst loading; continuous operation;

D O I：

10.1016/j.jpowsour.2005.10.024

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：

Passive direct methanol fuel cells have been extensively investigated for the effects of methanol concentration, catalyst loading of electrodes, fuel and oxidant supply modes and long-term operation on their performance. Passive cells to which the reactants, methanol and air, are supplied by natural convection flow without the help of any external devices, have shown very different behavior compared with an actively supplied cell. The optimum methanol concentration and catalyst loading in a passive cell are much higher than those of an active cell. The highest single cell performance was 45 mW cm(-2) with a 5 M methanol feed at room temperature and ambient pressure. Forced air to a passive cell was found to have a negative effect on the performance. In addition, experiments have been conducted to find the parameters that affect the long-term operation of a passive cell. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1256 / 1261

页数：6

共 24 条

[1] Water-neutral micro direct-methanol fuel cell (DMFC) for portable applications
Blum, A
Duvdevani, T
Philosoph, M
Rudoy, N
Peled, E
[J]. JOURNAL OF POWER SOURCES, 2003, 117 (1-2) : 22 - 25
[2] Carrette L, 2001, FUEL CELLS, V1, P5, DOI 10.1002/1615-6854(200105)1:1<5::AID-FUCE5>3.0.CO
[3] 2-G
[4] Materials and processes for small fuel cells
Chang, H
Kim, JR
Cho, JH
Kim, HK
Choi, KH
[J]. SOLID STATE IONICS, 2002, 148 (3-4) : 601 - 606
[5] Fabrication of electrocatalyst layers for direct methanol fuel cells
Chen, CY
Yang, P
Lee, YS
Lin, KF
[J]. JOURNAL OF POWER SOURCES, 2005, 141 (01) : 24 - 29
[6] Performance of an air-breathing direct methanol fuel cell
Chen, CY
Yang, P
[J]. JOURNAL OF POWER SOURCES, 2003, 123 (01) : 37 - 42
[7] Fuel cells for portable applications
Dyer, CK
[J]. JOURNAL OF POWER SOURCES, 2002, 106 (1-2) : 31 - 34
[8] A passive fuel delivery system for portable direct methanol fuel cells
Guo, Z
Cao, Y
[J]. JOURNAL OF POWER SOURCES, 2004, 132 (1-2) : 86 - 91
[9] Methanol crossover in direct methanol fuel cells: a link between power and energy density
Gurau, B
Smotkin, ES
[J]. JOURNAL OF POWER SOURCES, 2002, 112 (02) : 339 - 352
[10] Direct methanol fuel-cell combined with a small back-up battery
Han, J
Park, ES
[J]. JOURNAL OF POWER SOURCES, 2002, 112 (02) : 477 - 483

← 1 2 3 →