Humidity adjusting film
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United States of America Patent
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Issued Date -
Sep 14, 2006
app pub date -
Mar 7, 2006
filing date -
Mar 10, 2005
priority date (Note) -
Abandoned
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Abstract
Humidity adjusting films are sandwiched between the catalyst electrode layers and carbon fiber collector layers of a solid polymer type fuel cell. These humidity adjusting films are constructed from a conductive carbonaceous powder and a polytetrafluoroethylene. The moisture permeability as measured by the method stipulated in JIS L 1099 (B-1) is 1200 to 4000 g/m.sup.2 hr, and the mean thickness of the films is 5 to 100 .mu.m.
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