▎ 摘　　要

NOVELTY - Modified anode material comprises anode active material, graphene oxide, weak acid modified substance and polymer, where the weak acid modified substance is an organic salt containing weak acid groups, the polymer is obtained by polymerizing polymer monomers, and the polymer monomers is pyrrole, aniline and/or thiophene. USE - The modified anode material is useful for electrochemical lithium extracting device (claimed). ADVANTAGE - The modified anode material improves the adsorption capacity to the lithium and the cycle performance when performing electrochemical lithium process and improves the service life of the pole piece. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: Preparing the modified anode material comprising using the anode active material, the graphene oxide, the weak acid modified product and the polymer monomer as raw materials Preparing electrochemical lithium-extracting pole piece