| abstract |
(57) [Problem] To introduce not only solvent resistance and durability stability but also ion conductivity by introducing a phosphonic acid group expected to have high heat resistance into a polymer having high heat resistance of the polymer skeleton itself. The present invention provides a novel polymer material that can be an excellent polymer electrolyte. SOLUTION: When a phosphonic acid group is contained, the average molecular weight is between 1,000 and 1,000,000, and when there are a plurality of repeating units, they are mainly bonded randomly and / or alternately. A polyazole containing no fluorine atoms in the polymer. |