The invention concerns novel electrode materials derived from polyquinoid ionic compounds and their uses such as in electrochemical generators. It concerns in particular compounds such as a rhodizonic acid salt; a rufigallic acid salt; an ellagic acid salt; a thiocyanic acid polymer or 1-cyano-2-mercaptoacetylene; a polymer containing the units derived from ketopyridine; an alternate polymer containing benzoquinone and pyrazine units; a 1,2-dimercaptocyclobutenedione (dithiosquaric) acid salt; a 1,5-dhydropyrimido (5,4d)pyrimidine-2,4,6,8(3H,7H)-tetrone acid salt; a dicarboxylic acid salt whereof the groups are linked by conjugate segments; a polyamide derived from a dicarboxylic acid whereof the groups are linked by conjugate segments. The invention also concerns all the oxidation products of said compounds.