Patent ID: 8148005

Claim:
An active material for a secondary battery, wherein the secondary battery has a positive electrode, a negative electrode and an electrolyte as the active material for at least one of the positive electrode and the negative electrode, the active material comprising: an electrically conductive polymer compound represented by the following general formula (A): wherein R 1 to R 3 in the general formula (A) are each independently selected from hydrogen and an alkyl group having 1 to 4 carbon atoms, and at least one of R 1 to R 3 has any of the structures represented by the following general formulas (1) to (4): wherein symbol * represents the position at which the structures of the general formulas (1) to (4) respectively bind to a carbon atom or nitrogen atom of the pyrrole ring in the general formula (A); in the general formulas (1) to (4), R is H, OH, CH3 or NH2, Y is —(CH 2 ) m — (wherein m is an integer from 0 to 10); and when m is not less than 1, at least one methylene group which constitutes Y can be substituted by —O—, —CH═N—, —S—, —CO—, or any one of the following: