초록 ▼

An improved molding composition is provided for compression molding or injection molding a current collector plate for a polymer electrolyte membrane fuel cell. The molding composition is comprised of a polymer resin combined with a low surface area, highly-conductive carbon and/or graphite powder f

An improved molding composition is provided for compression molding or injection molding a current collector plate for a polymer electrolyte membrane fuel cell. The molding composition is comprised of a polymer resin combined with a low surface area, highly-conductive carbon and/or graphite powder filler. The low viscosity of the thermoplastic resin combined with the reduced filler particle surface area provide a moldable composition which can be fabricated into a current collector plate having improved current collecting capacity vis-a-vis comparable fluoropolymer molding compositions.

대표청구항 ▼

[ We claim:] [1.] A composition for forming an electrically conductive polymer composite for use in an electrochemical cell, comprising:a non-fluorinated thermoplastic binder having a melt viscosity of less than or equal to the lowest melt viscosity of a liquid crystal polymer over a shear rate rang

[ We claim:] [1.] A composition for forming an electrically conductive polymer composite for use in an electrochemical cell, comprising:a non-fluorinated thermoplastic binder having a melt viscosity of less than or equal to the lowest melt viscosity of a liquid crystal polymer over a shear rate range of 1,000 to 10,000 sec.sup.-1 ; anda plurality of electrically conductive particles fixed in said thermoplastic binder, said composite having a bulk conductivity of at least approximately 10 S/cm.