Anode-controlled water management in direct methanol fuel cells

C. E. Shaffer, C. Y. Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

A low water crossover from anode to cathode in a direct methanol fuel cell (DMFC) must be realized if highly concentrated methanol fuel is to be used. The use of a low-a membrane electrode assembly (MEA) is vitally important in achieving this goal. The low rate of water crossover for a low-a MEA has traditionally been attributed to the hydrophobic cathode micro-porous layer (MPL), thin membrane combination, but it has recently been discovered that a hydrophobic anode MPL is also effective in reducing water crossover. In this paper we demonstrate that a hydrophobic anode MPL may play an even more significant role than cathode MPL in reducing water crossover, and we embark on developing anodecontrolled water management strategies for DMFCs. As a first step in this process, we show that a thicker, more hydrophobic anode MPL with lower permeability is more effective in reducing water crossover.

Original languageEnglish (US)
Title of host publicationECS Transactions - Proton Exchange Membrane Fuel Cells 8
Pages1507-1518
Number of pages12
Edition2 PART 2
DOIs
StatePublished - Dec 1 2008
EventProton Exchange Membrane Fuel Cells 8, PEMFC - 214th ECS Meeting - Honolulu, HI, United States
Duration: Oct 12 2008Oct 17 2008

Publication series

NameECS Transactions
Number2 PART 2
Volume16
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherProton Exchange Membrane Fuel Cells 8, PEMFC - 214th ECS Meeting
CountryUnited States
CityHonolulu, HI
Period10/12/0810/17/08

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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