The present invention has been made to solve these problems, and provides an all solid state polymer electrolyte having high ion conductivity achieved by the selection of a specific polymer material or a gel state polymer electrolyte having high ion conductivity achieved by {HEAD ~ the addition} of {TAIL ~ a solvent} in small enough amounts to prevent the reduction of the reliability 
The present invention has been made to solve these problems , and provides an all solid state polymer electrolyte having high ion conductivity achieved by the selection of a specific polymer material or a gel state polymer electrolyte having high ion conductivity achieved by { HEAD ~ the addition } of { TAIL ~ a solvent } in small enough amounts to prevent the reduction of the reliability
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