Method of treatment for imparting conductivity to surface of separator-use base member of solid polymer type fuel cell
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United States of America Patent
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Issued Date -
Mar 15, 2012
app pub date -
Sep 10, 2010
filing date -
Sep 10, 2010
priority date (Note) -
Abandoned
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Abstract
The present invention provides a method of treatment for imparting conductivity to a surface of a separator-use base member resulting in little distortion and superior conductive performance for a separator-use base member of a solid polymer type fuel cell made of any of a sheet of stainless steel, titanium, or titanium alloy, comprising a step of spray coating and drying on the surface of the separator-use base member a suspension prepared by mixing conductive compound particles 3 of an average particle size of 1 to 10 μm with ethanol or water so as to form a conductive compound particle-coated layer 2, a step of blasting the conductive compound particle-coated layer 2 with blast particles 4 having an average particle size of 50 to 200 μm so as to drive the conductive compound particles 3 in the inside direction of the separator-use base member 3 and anchor them there, and a step of cleaning off conductive compound particles 3 not anchored to the surface of the separator-use base member 1 at that step and impurities.
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