ELECTRODE ACTIVE MATERIAL FOR ELECTRICITY STORAGE DEVICE, AND ELECTRICITY STORAGE DEVICE USING THE SAME

The present invention provides an electrode active material for an electricity storage device, having a structure represented by following formula (1). In the formula (1), R 1 to R 6 each denote independently a hydrogen atom (except for a case where all of R 1 to R 6 denote hydrogen atoms), a halogen atom, an optionally substituted phenyl group, an optionally substituted heterocyclic group, or an optionally substituted hydrocarbon group having 1 to 4 carbon atoms.