▎ 摘　　要

NOVELTY - A graphene filter electrode material preparing method involves placing 1-2 pts. wt. graphite oxide in a heating container, sealing the heating container, heating at rapid temperature for 30-120 seconds, preparing 0.5-1 pts. wt. expanded graphene, weighing expanded graphene and solvent, and ultrasonically dispersing to form a graphene oxide colloidal solution. The graphene oxide colloid solution is sprayed on the substrate by a high-pressure electrostatic spray device, after dried, and the substrate is removed to obtain a graphene oxide film. The graphene oxide film is reduced in a microwave apparatus in a reducing atmosphere to obtain the finished product. USE - Method for preparing graphene filter electrode material that is utilized in battery (claimed). ADVANTAGE - The graphene filter electrode material has good conductivity and three-dimensional structure, no need to add any conductive agent and binder, which is beneficial to increase the capacity of supercapacitor and lithium ion battery, and good rate performance and cycle performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a graphene filter electrode material prepared by the method (2) use of graphene filter electrode material in battery