초록 ▼

The invention is a method for forming a solid polymer electrolyte structure comprising: (a.) forming a mixture of a binder and a plurality of catalytically active, electrically conductive particles; (b.) forming the mixture into a particle containing film; (c.) contacting the film with a fluorocarbo

The invention is a method for forming a solid polymer electrolyte structure comprising: (a.) forming a mixture of a binder and a plurality of catalytically active, electrically conductive particles; (b.) forming the mixture into a particle containing film; (c.) contacting the film with a fluorocarbon membrane in its thermoplastic form; (d.) contacting the particle-containing film with an electrically conductive, hydraulically permeable matrix, thereby forming a laminate having a membrane on one side, a matrix on another side and a plurality of catalytically active particles therebetween; and (e.) applying sufficient pressure to the laminate to embed at least a portion of the matrix into the membrane.

대표청구항 ▼

A method for forming a solid polymer electrolyte structure consisting essentially of: (a.) forming a mixture of a polytetrafluoroethylene or a fluorocarbon ion exchange active polymer in its thermoplastic form and a plurality of catalytically active, electrically conductive particles having an avera

A method for forming a solid polymer electrolyte structure consisting essentially of: (a.) forming a mixture of a polytetrafluoroethylene or a fluorocarbon ion exchange active polymer in its thermoplastic form and a plurality of catalytically active, electrically conductive particles having an average particle size diameter of from about 10 to about 30 microns and having a surface area of from about 800 to about 1800 square meters per gram; (b.) forming the mixture into a particle containing film; (c.) contacting the film with a fluorocarbon membrane in its thermoplastic form; (d.) contacting the particle-containing film with an electrically conductive, hydraulically permeable matrix, thereby forming a laminate having a membrane on one side, a matrix on another side and a plurality of catalytically active particles there between, wherein the matrix is selected from the group consisting of carbon cloth, carbon paper, carbon felt, metallic screen, metallic felt and a porous metallic sheet and wherein the matrix has a resistivity of from about 600,000 to about 1375 microohm-centimeters; and (e.) applying sufficient pressure to the laminate to bond at least a portion of the matrix to the membrane thereby forming a membrane having catalytically active particles present on the membrane at a level of less than about 25 milligrams per square centimeter of membrane area.