Method of manufacturing separator for fuel cell, and method...

H - Electricity – 01 – M

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H01M 8/02 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2492264

A method of manufacturing separators (18) for fuel cell holding an anode (13) and a cathode (14) along an electrolyte membrane (12) from both sides thereof through diffusion layers (15, 16), comprising the steps of mixing a thermoplastic resin (46) with a conductive material (45) to form a mixed material (50), forming a separator material (68) with the mixed material, and radiating electron beam (72) to the contact surfaces (20b, 30b) of the separator material to harden the contact surfaces of the separators, whereby even if a reaction heat is generated in a fuel cell (10), the elasticity of the contact surfaces of the separators can be assured.

Procédé de fabrication de séparateurs (18) pour une pile à combustible possédant une anode (13) et une cathode (14) le long d'une membrane électrolytique (12) depuis les deux côtés de cette dernière à travers des couches de diffusion (15, 16). Ce procédé consiste à mélanger une résine thermoplastique (46) à un matériau conducteur (45) afin d'obtenir un mélange (50), à façonner un matériau de séparateur (68) au moyen de ce mélange et à irradier les surfaces de contact (20b, 30b) de ce matériau au moyen d'un faisceau électronique (72), de manière à durcir les surfaces de contact des séparateurs, ce qui permet de conserver l'élasticité des surfaces de contact de ceux-ci, même si une réaction thermique se produit dans une pile à combustible (10).

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