| abstract |
Disclosed is a secondary battery in which an electrode active material is mainly composed of an organic compound that contains a conjugated diamine structure represented by general formula (I) in the structural unit thereof and an electrolyte comprises a carbonate ester compound represented by general formula (II). In the formulae, R 1 to R 4 independently represent a substituted or unsubstituted alkyl group, or the like: and X 1 to X 4 independently represent a hydrogen atom, or any substituent.nThe secondary battery has high energy density and high output, is decreased in capacity to a less extent even when charge and discharge are repeated, and has good cycle properties. |