▎ 摘　　要

NOVELTY - The method involves selecting a metal foil. Positive charge process is performed. Oxidized graphite and solvent are added and dispersed to obtain oxidized graphene suspension. The metal foil is cleaned and dried to obtain current collector precursor by the oxidized graphene suspension. The current collector precursor is put into a tubular furnace. The current collector precursor is heated to obtain a graphene-containing layer of a positive current collector at temperature of about 50-200 degrees centigrade. USE - Positive electrode collecting fluid preparation method. ADVANTAGE - The method enables depositing the graphene-containing layer on a metal foil surface to protect metal fluid by electrostatic attraction, increasing current collector and electrode material biocompatibility and improving electrochemical device power density. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for an anode current collector. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating a positive electrode collecting fluid preparation method.'(Drawing includes non-English language text)'