| abstract |
[PROBLEMS] To provide a proton conductor which is a compatibilized mixture of an ionic liquid and a polymer and is usable, e.g., as an electrolyte for fuel cells, etc. [MEANS FOR SOLVING PROBLEMS] The proton conductor is a compatibilized mixture of a polymer and a salt which is formed from a Brοnsted base and a Brοnsted acid and has at least one heteroatom having a proton, and is characterized in that the polymer is one formed by copolymerizing a maleimide compound represented by the following formula (1) (wherein R1 represents hydrogen or optionally substitutedalkyl, aryl, or aralkyl), a vinyl compound, and a divinyl compound. |