Hydrogels in methanol fuel cartridge used as a diffusion-rate-controlling agent suppressing the methanol crossover in passively operated flat-pack type DMFCs

Woo Jae Kim, Hoo Gon Choi, Young Kwan Lee, Jae Do Nam, Sung Min Cho, Chan Hwa Chung

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

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.

Original languageEnglish
Pages (from-to)193-195
Number of pages3
JournalJournal of Power Sources
Volume157
Issue number1
DOIs
StatePublished - 19 Jun 2006

Keywords

  • Diffusion rate
  • DMFCs
  • Flat-pack
  • Hydrogels
  • Methanol crossover

Fingerprint

Dive into the research topics of 'Hydrogels in methanol fuel cartridge used as a diffusion-rate-controlling agent suppressing the methanol crossover in passively operated flat-pack type DMFCs'. Together they form a unique fingerprint.

Cite this