▎ 摘　　要

NOVELTY - Preparation of high-performance lithium/sodium ion battery, involves using aluminum foil as positive electrode current collector, preparing target mixture by mixing lithium ion battery positive electrode material, sodium ion battery positive electrode material, and positive electrode conductive agent, dissolving the target mixture in a solvent to obtain a slurry, coating on the surface of positive electrode, rolling, and slicing to obtain positive electrode, using copper foil as negative electrode current collector, mixing the negative electrode conductive agent, negative electrode binder, and thickener, rolling, and slicing to obtain negative electrode, laminating with electric core, baking, injecting liquid, forming, and separating. USE - Preparation of high-performance lithium/sodium ion battery. ADVANTAGE - The method provides battery having long life, high energy density, high multiplying power, high gram capacity and high voltage platform, low-temperature performance, long life, low cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the high-performance lithium/sodium ion battery.