Separator for fuel cell and manufacture method for the same

Details Separator for fuel cell and manufacture method for the same Separator for fuel cell and manufacture method for the same

H - Electricity

01

M

H01M 2/14 (2006.01) H01M 8/02 (2006.01)

Patent

CA 2363996

To provide a separator for a fuel cell made of graphite excellent in mechanical strength and gas impermeability as well as electric characteristic properties, a separator for a fuel cell is produced from a molded body produced by filling a graphite powder 21 whose surface is coated with resin 20 in a molding die and by pressure-molding the powder. Such a molded body is provided with excellent mechanical strength of 40 MPa of bending strength or higher, 10 x 10-8 cc .cndot. cm/cm2 .cndot. sec .cndot. atm of gas permeability or lower, and electric property of 10 x 10-3 .OMEGA. .cndot. cm of the volume resistance or lower even if the content of resin is decreased to as low as 10 to 24 wt.%.

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