Disclosed is a non-aqueous secondary battery having a positive electrode composed of a polymer of aniline or an aniline derivative and a negative electrode composed of (i) and alkali metal, (ii) an alkali metal alloy, (iii) an electroconductive polymer or (iv) an alkali metal or alkali metal alloy/electroconductive polymer composite, wherein the polymer of aniline or an aniline derivative is formed by converting a doped polymer obtained by oxidative polymerization to an undoped state.
