▎ 摘　　要

NOVELTY - Composite current collector comprises aluminum foil and safety coating coated on the aluminum foil, where safety coating is synthesized by curing the safety coating slurry, safety coating slurry includes 9-36 wt.% main material, 0.45-8 wt.% agglomerant, 0.45-8 wt.% conductive agent, 0-2 wt.% other auxiliary agent and 60-85 wt.% solvent, agglomerant includes first agglomerant and second agglomerant, intrinsic viscosity of the first agglomerant is 0.25-0.37 l/g, and intrinsic viscosity of the second agglomerant is 0.15-0.25 l/g. USE - The composite current collector is useful in anode sheet and solid-liquid mixed state battery; and in preparing anode sheet (all claimed). ADVANTAGE - The composite current collector: has excellent compatibility with anode active material; improves the interface problem between the composite current collector and anode active material, and reduces the phenomenon that the internal resistance of the lithium-ion battery increases sharply after high-temperature storage. DETAILED DESCRIPTION - Composite current collector comprises aluminum foil and safety coating coated on the aluminum foil, where safety coating is synthesized by curing the safety coating slurry, safety coating slurry includes 9-36 wt.% main material, 0.45-8 wt.% agglomerant, 0.45-8 wt.% conductive agent, 0-2 wt.% other auxiliary agent and 60-85 wt.% solvent, agglomerant includes first agglomerant and second agglomerant, intrinsic viscosity of the first agglomerant is 0.25-0.37 l/g, and intrinsic viscosity of the second agglomerant is 0.15-0.25 l/g. INDEPENDENT CLAIMS are also included for: Preparing composite current collector; Use of in composite current collector in anode sheet and solid-liquid mixed state battery; and Preparing positive electrode sheet.