▎ 摘　　要

NOVELTY - Preparing tannic acid-polypyrrole-graphene oxide composite gel comprises (i) adding pyrrole to the tannic acid aqueous solution, stirring under the condition of 0-4 degrees C, then adding graphene oxide, stirring for second time to obtain tannic acid-pyrrole-graphene oxide mixed solution; and (ii) adding the iron salt aqueous solution into the mixed solution obtained in step (i), and allowing to stand. USE - The tannic acid-polypyrrole-graphene oxide composite gel is useful in super capacitor field (claimed). ADVANTAGE - The tannic acid-polypyrrole-graphene oxide composite: is simple, does not require complicated equipment, does not require organic solvents, has no pollution to the environment, easily obtains raw materials, can meet the needs of different use, and is convenient for use; and exhibits excellent capacitance ratio and cycle stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for tannic acid-polypyrrole-graphene oxide composite gel electrode material, is prepared by the preparation method.