Patent ID: 6500585
Filing Date: 2002-12-31
Classification: H01M,Y02E,Y02P

Abstract:
A method for manufacturing a metallized composite substrate (30) suitable for use in a bipolar plate (10) comprising the steps of:providing a composite substrate (11) in the form of a plate, with main surfaces (17,18) in the form of electrically conducting carrier material (15); applying a thermoplastic plastic material (16) in the pore spaces of the matrix; subjecting the combination of the carrier material (15) and the thermoplastic material (16) to a thermal pressing process; subjecting the main surfaces (17,18) of the combination of the carrier material (15) and the thermoplastic material (16) to surface activating treatment, and thereafter applying a metal film (31,32) to the main surfaces (17,18) of the substrate; whereinthe carrier material is formed by a matrix of a carbon fiber structure which is electrically conductive in all directions and which carbon fibers are graphitized; and performing the surface activating treatment in a dry condition.