Air-breathing fuel cells fed with dimethoxymethane (DMM) vapor

Title
Air-breathing fuel cells fed with dimethoxymethane (DMM) vapor
Author(s)
김혜경강용묵[강용묵]김진호[김진호]
Keywords
METHANOL CROSSOVER; PERFORMANCE; TRIMETHOXYMETHANE; DMFC; SYSTEM
Issue Date
201009
Publisher
ELSEVIER SCIENCE INC
Citation
ELECTROCHEMISTRY COMMUNICATIONS, v.12, no.9, pp.1145 - 1148
Abstract
The dimethoxymethane vapor-fed fuel cell (V-DMMFC) described in this paper is an innovative design for passive water management without the need for a complex micro-fluidic subsystem. DMM is a promising fuel for vapor-fed fuel cells because it has high energy density, an absence of C C bonds, and lower toxicity as well as high vapor pressure. In a polarization measurement, the V-DMMFC showed an open circuit voltage of around 0.55 V and a high power density of 34.7 mW cm(-2) at 0.315 V, which is higher than that of a fuel cell with MeOH vapor. The V-DMMFC achieved a fast response in fuel feeding and a higher Faradic efficiency (76.1%) than that of fuel cells fed with MeOH vapor (53.7%); these improvements result from a higher vapor pressure and a lower fuel crossover of DMM. For constant voltage (CV) mode, the V-DMMFC provided evidence for the long-term stability of the device and for the sustainability of humidity within the self-humidified MEA without any additional provision of water. (C) 2010 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/23711http://dx.doi.org/10.1016/j.elecom.2010.05.033
ISSN
1388-2481
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공과대학 > 신소재공학부 > Articles
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