Method for making an improved solid polymer electrolyte electrode using a liquid or solvent
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United States of America Patent
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Apr 25, 1989
Grant Date -
N/A
app pub date -
Dec 9, 1985
filing date -
Dec 9, 1985
priority date (Note) -
Expired
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Abstract
The invention is a method for forming a solid polymer electrolyte structure comprising: a. forming a suspension of catalytically active, electrically conductive particles and a liquid such as dibromotetrafluoroethane; b. applying the suspension to at least one side of a fluorocarbon membrane sheet, while said sheet is in its thermoplastic form; c. removing substantially all of the liquid, leaving the particles on the membrane sheet; d. pressing at least a portion of the particles into the membrane sheet; e. contacting the side of the so-treated membrane having the particles on the surface with an electrically conductive, hydraulically permeable matrix; f. subjecting the membrane/matrix combination to a pressure sufficient to embed at least a portion of the matrix into the membrane.
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