Why Lithium Batteries Use Aluminum Foil?
In lithium batteries, aluminum foil is used for the positive electrode, and copper foil is used for the negative electrode, mainly because of their physical and chemical properties. In order to ensure the stability of the battery, the purity of aluminum foil and copper foil is required to be above 98%. So, why do we have to use aluminum foil for the positive electrode of the battery? What Are Manufacturers’ Performance Requirements for Battery Foil? Battery manufacturers all hope that the battery has high energy density, reduces its weight, and prolongs its service life. Therefore, they usually have the following performance requirements for batteries: Requirements Name Details Thickness The thinnest …