Bipolar membrane and method for its production
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United States of America Patent
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Jun 22, 1993
Grant Date -
N/A
app pub date -
May 31, 1991
filing date -
May 31, 1990
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Abstract
Disclosed is a bipolar membrane comprising a cation-exchange membrane in which a cation-exchange group present at least at its adhered surface has been ion-exchanged with a heavy metal ion, which is adhered closely to an anion-exchange membrane at a peel strength of not less than 0.2 kg f/25 mm, and having a water-splitting current efficiency of not less than 80% and a water-splitting membrane potential of not more than 2.0 V.
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