Research Progress on Effect of Current Collector Battery Aluminum Foil on Performance of Lithium Battery

The main function of current collector of battery is to support the active material and conduct the electrons generated during the electrode reaction to the external circuit. The aluminum foil exhibits excellent corrosion resistance, conductivity, and mechanical properties, therefore becames the mainstream material for the positive electrode current collector of lithium batteries. The surface corrosion behavior of the aluminum foil current collector in electrolyte solutions such as ionic liquid electrolytes, lithium salt electrolytes, and ether-based solutions is summaried. The influence of surface oxides and pores, surface roughness, surface microstructure, other surface characteristics on battery performance is studied. The research progress on surface treatment technology and alloying to improve the properties of aluminum foil is reviewed. The future research directions are prospectively discussed.