Water transport induced by heat flow across polymer electrolyte fuel cell (PEFC) membranes has been studied under wellcontrolled thermal conditions. The investigation showed that water can be transferred across a membrane electrode assembly (MEA) that is subjected to a through-plane temperature differential. Thermo-osmotic water transport is a membrane-controlled phenomenon. The thermally driven water flux was found to be relatively large even for small temperature differences (∼1°C). A physical model of thermo-osmosis is proposed. Comparison between the proposed model results and the experimental data shows good agreement. copyright The Electrochemical Society.
|Number of pages||5|
|Publication status||Published - 1 Dec 2006|
|Event||Proton Exchange Membrane Fuel Cells 6 - 210th Electrochemical Society Meeting - Cancun, Mexico|
Duration: 29 Oct 2006 → 3 Nov 2006
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