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US08835079B2 Fuel cell separator plate surface treatment by laser ablation 有权
燃料电池隔板通过激光烧蚀表面处理

Fuel cell separator plate surface treatment by laser ablation
Abstract:
A composite separator plate for use in an electrochemical fuel cell as well as a method of forming same is disclosed. The plate may be formed of polymeric material and electrically conductive material having a non-conductive polymeric outer layer by compression molding, or alternately of a metallic material having an outer metal oxide layer. Contact regions of the plate surface are subsequently ablated with a laser to remove the outer layer of material from the plate. The removal of the outer layer reduces the contact resistance of the plate when used in an electrochemical fuel cell stack, while offering adequate strength and corrosion resistance for the fuel cell stack environment.
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