Ion exchange and electrode assembly for an electrochemical cell
First Claim
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1. A unitary assembly for an electrochemical cell comprisinga composite nonporous solid polymer ion exchange membrane having first and second planar surfaces;
- said nonporous composite ion exchange membrane comprising at least one preformed membrane-support film of porous expanded polytetrafluoroethylene, said membrane-support film containing, and made nonporous by, solid polymer ion exchange resin; and
a first electrode having two planar surfaces, one surface of said first electrode in intimate contact with said first surface of said nonporous solid polymer ion exchange membrane and bonded to said membrane by said solid polymer ion exchange resin.
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Abstract
This invention provides a solid polymer ion exchange membrane/electrode assembly, or an electrode/solid polymer ion exchange membrane /electrode assembly, for an electrochemical cell, which consists of planar layers of materials intimately joined together to form a unitary structure. The layers are joined together by solid polymer ion exchange resin present in at least one of each pair of adjacent layers. The unitary assembly can be used in an electrochemical cell such as a battery, electrolytic reactor, or fuel cell.
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Citations
16 Claims
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1. A unitary assembly for an electrochemical cell comprising
a composite nonporous solid polymer ion exchange membrane having first and second planar surfaces; -
said nonporous composite ion exchange membrane comprising at least one preformed membrane-support film of porous expanded polytetrafluoroethylene, said membrane-support film containing, and made nonporous by, solid polymer ion exchange resin; and a first electrode having two planar surfaces, one surface of said first electrode in intimate contact with said first surface of said nonporous solid polymer ion exchange membrane and bonded to said membrane by said solid polymer ion exchange resin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A unitary assembly for an electrochemical cell comprising
a nonporous solid polymer ion exchange membrane having first and second planar surfaces; - and
a first electrode having two planar surfaces; said first electrode comprising a preformed electrode-support film of porous expanded polytetrafluoroethylene, said electrode-support film containing both a solid polymer ion exchange resin and a catalyst material; wherein one surface of said first electrode is in intimate contact with said first surface of said solid polymer ion exchange membrane and bonded to said membrane by said solid polymer ion exchange resin. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification