The problem has been solved by the use of polymer electrolyte having a ketonic carbonyl group wherein {HEAD ~ the weight ratio} of the ketonic carbonyl group is in {TAIL ~ the range} of 15 to 50 wt % based on the weight of the polymer material 
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The problem has been solved by the use of polymer electrolyte having a ketonic carbonyl group wherein { HEAD ~ the weight ratio } of the ketonic carbonyl group is in { TAIL ~ the range } of 15 to 50 wt % based on the weight of the polymer material
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH