▎ 摘　　要

NOVELTY - Aqueous ion secondary battery, comprises anode, cathode, electrolyte and separator. The cathode includes a cathode current collector and a cathode material. The cathode material is coated on the cathode current collector. The cathode material includes a cathode active material. The cathode active material is a metal oxide silicon-based composite material. The cathode material further includes a conductive carbon material and a binder. The conductive carbon material is SUPER-P(Conductive carbon black), carbon nanotubes (CNT), vapor-grown carbon fiber (VGCF), Ketjen black, graphene, KS-6, and KS-15. The electrolyte is an aqueous solution containing lithium salt or sodium salt. The lithium salt or sodium salt is lithium sulfate, lithium acetate, sodium sulfate or sodium acetate. The separator is composite separator of the non-woven fabric and filter paper. USE - The aqueous ion secondary battery is useful in energy storage, communication battery material field and renewable energy development and utilization and intelligent network construction of key technology. ADVANTAGE - The battery effectively constructs the conductive network of the silicon-based cathode composite material, and improves the structural stability and electrochemical performance of the silicon-based negative electrode composite material in the aqueous ion battery.