| abstract |
[PROBLEMS] To provide a Li battery and an electric double layer capacitor which can apply a high voltage and are stable in a wide temperature range and an Al electrolytic capacitor which is stable at a high temperature. SOLUTION:-[NMSO 2 OCH 2 ｛CF (CF 3 ) OCF 2} a (CF 2) b {CF 2 OCF (CF 3) c CH 2 OSO 2] - comprising an electrochemical element having a polymer electrolyte comprising polymerized units. [A, b, and c are each 0 to 3, A is an integer of 0 to 8 and 0 to 3, and a and c are not simultaneously 0. M is Li, H, NH 4 or quaternary onium. ] |