6 micron high tensile double-sided Li-ion battery electrolytic copper foil is my company’s latest research and development of high-end products. It can not only help lithium-ion battery to increase energy density, but also accord with the development trend of power battery system of new energy automobile in the future-lightweight. At present, the tensile strength of electrolytic copper foil for 6 micron high tensile double-sided Li-ion battery has reached 50KG, and the properties are as follows: