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US 4,906,535 AGranted
Electrochemical cathode and materials therefor
AssigneeAlupower, Inc.
InventorWilliam H. Hoge
Life of this patent
Estimating the term…
Abstract
There is disclosed a process for producing an electrochemical cathode for an electrochemical cell comprised of a current collecting layer or substrate laminated between layers of a nonwoven conductive fibrous web, preferably of conductive carbon fibers, impregnated with a mixture of carbon particles and a nonfibrous polymeric substance, and optionally with a hydrophobic microporous film or layer disposed on one of the layers of the nonwoven conductive fibrous web as well as the product produced thereby.
Claims26
An electrochemical cathode, which comprises:
- a current collecting substrate capable of being connected to electrical circuitry;
- and
- conductive nonwoven webs laminated to said current collecting substrate and impregnated with a mixture of carbon particles and a nonfibrous polymeric substance for holding said carbon particles in said web, said conductive nonwoven web being formed of conductive carbon fibers.
A process for forming an electrochemical cathode, which comprises:
- (a) impregnating a conductive nonwoven fibrous web with a dispersion comprised of carbon particles and a nonfibrous polymeric material for holding said carbon particles to said web.
- (b) laminating a current collecting substrate between layers of said impregnated web to form said electrochemical cathode.
Dependencies are inferred from the claim text.