▎ 摘　　要

NOVELTY - A polypyrrole/graphene/rare earth conducting composite material preparing method involves utilizing ethanol as a medium to prepare a composite material. Polyethylene glycol 400 and paratoluenesulfonic acid are utilized as dopants. Iron trichloride is utilized as an oxidant. Graphene, rare earth ion and pyrrole monomer are utilized as precursors and polymerized at room temperature for 4 hours through in-situ polymerization method. USE - Method for preparing polypyrrole/graphene/rare earth conducting composite material for a modified electrode and a capacitor. ADVANTAGE - The method enables providing excellent electrochemical performance and better thermal stability, avoiding bad electric performance of polypyrrole, exploring application area of polypyrrole in modified electrode and a capacitor, simplifying preparing process, facilitating great convenience to operate the capacitor, avoiding pollution, reducing preparation cost, and providing high production efficiency and better industrialized product prospect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a polypyrrole/graphene/rare earth conducting composite material.