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AssigneeThe Chemours Company Fc, LLC
InventorsRUIDONG YANG, ROBERT HARVEY MOFFETT, MICHAEL W. RAIFORD, ALLISON HALUCKA
Estimating the term…
A cation exchange membrane includes a stretched film including at least two layers of fluorinated ionomer containing sulfonate or sulfonic acid groups. The layers have differing ion exchange ratio values, which define one or more high ion exchange ratio layers and one or more low ion exchange ratio layers. The high and low ion exchange ratio layers differ in ion exchange ratio by at least about 1. A process for making a cation exchange membrane includes forming a film including at least two layers of fluorinated ionomer containing sulfonate or sulfonic acid groups to form a multi-layer film and stretching the multi-layer film. An electrochemical cell has anode and cathode compartments and includes a cation exchange membrane as a separator between said anode and cathode compartments, where the membrane includes a stretched film including at least two layers of fluorinated ionomer containing sulfonate or sulfonic acid groups.
A cation exchange membrane comprising a stretched film comprising at least two layers of fluorinated ionomer containing sulfonate or sulfonic acid groups, said layers having differing ion exchange ratio values which define one or more high ion exchange ratio layers and one or more low ion exchange ratio layers, said high and low ion exchange ratio layers differing in ion exchange ratio by at least about 1.
A process for making a cation exchange membrane comprising a stretched film, said process comprising:
An electrochemical cell having anode and cathode compartments and comprising a cation exchange membrane as a separator between said anode and cathode compartments, said membrane comprising a stretched film comprising at least two layers of fluorinated ionomer containing sulfonate or sulfonic acid groups, said layers having differing ion exchange ratio values which define one or more high ion exchange ratio layers and one or more low ion exchange ratio layers, said high and low ion exchange ratio layers differing in ion exchange ratio by at least about 1.
Dependencies are inferred from the claim text.