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