Patent ID: 8440365

Claim:
An electrolyte having a structure where a fluorinated hydrophilic segment A represented by Formula (1) and a hydrocarbon hydrophobic segment B are alternately bonded to each other through chemical bond: A: -E 2 -[Rf-E 1 ] m - (1) wherein Rf is a linear or a branched perfluoro chain having one or more carbon atoms, E 1 , and E 2 are each a proton conductive portion represented by Formula —(CONM) i1 (CO) i2 (SO 2 NM) i3 (SO 2 ) i4 — (0≦i 1 , 0≦i 2 ≦1, 0≦i 3 , 0≦i 4 ≦1, 0<i 1 +i 3 , i 1 to i 4 are each an integer, and M is proton, alkali metal (Li, Na, K, Rb, Cs, and Fr), or alkali earth metal (Be, Mg, Ca, Sr, Ba, and Ra)), 2≦m (m is an integer), and Rf, E 1 , and E 2 may be each arbitrarily selected in the repeating unit.