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2006 | "Hydrogels in methanol fuel cartridge used as a diffusion-rate-control…

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작성자 관리자 /   작성일2015-08-24 /   조회921회

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Title : Hydrogels in methanol fuel cartridge used as a diffusion-rate-controlling agent suppressing the methanol crossover in passively operated flat-pack type DMFCs
Authors: Woo-Jae Kim, Hoo-Gon Choi, Young-Kwan Lee, Jae-Do Nam, Sung Min Cho and Chan-Hwa Chung

Journal : Journal of Power Sources
Vol/No/Page : 157/1/193-195
DOI : 10.1016/j.jpowsour.2005.07.033

Abstract :
Hydrogels are used in methanol fuel cartridges to control fuel diffusion from the fuel reservoir to the anode electrode. This ability to control fuel diffusion rates enables the reduction of excess fuel supply that causes fuel crossover through the proton-exchange membrane. Cell performance was increased drastically from 14 to 21.5 m W cm(-2) with higher methanol concentrations using hydrogel fuel cartridges that fulfill the role of a diffusion-rate-controlling agent. This result implies that the hydrogel retards fuel diffusion, even at higher concentrations and suppresses the methanol crossover.

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