Thermostable polymer electrolyte gel
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 21, 2000
Grant Date -
N/A
app pub date -
Nov 4, 1997
filing date -
Nov 7, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A thermostable polymer electrolyte gel containing an acrylonitrile polymer, an electrolyte and a solvent, the acrylonitrile polymer having an acrylonitrile content of from 89 wt % to 98 wt % and meeting the following relationship: 1,040,000-(A.times.10,000).ltoreq.B.ltoreq.1,490,000-(A.times.10,000) where A is the acrylonitrile content in wt % and B is the weight average molecular weight of the acrylonitrile polymer, the polymer electrolyte gel having an ion conductivity of 10.sup.-3 S/cm or higher at 20.degree. C., exhibiting the 'retention of shape' in a thermostability test, and containing the acrylonitrile polymer in a proportion of from 3 wt % to 9 wt %. The thermostable polymer electrolyte gel can be produced by dissolving an acrylonitrile polymer and an electrolyte in a solvent to prepare a solution of the polymer, and cooling the polymer solution to a temperature of 0.degree. C. or lower.
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