Steel shell/aluminum shell/cylindrical/soft packaging series:
(1) The positive electrode-the active material is generally lithium manganese oxide or lithium cobalt oxide, and now nickel cobalt lithium manganese oxide material is used, lithium iron phosphate is used for electric bicycles, and electrolytic aluminum foil with a thickness of 10--20 microns is used for the conductive collector .
(2) Separator-a special composite membrane that allows ions to pass, but is an insulator of electrons.
(3) Negative electrode-The active material is graphite, or carbon with a graphite-like structure, and the conductive current collector uses electrolytic copper foil with a thickness of 7-15 microns.
(4) Organic electrolyte—Carbonate solvent in which lithium hexafluorophosphate is dissolved, and gel electrolyte for polymer.
(5) Battery shell-divided into steel shell (now rarely used in square shape), aluminum shell, nickel-plated iron shell (used for cylindrical batteries), aluminum plastic film (flexible packaging), etc., as well as battery caps, also battery Positive and negative terminals.