Time：Jun 20, 2023 Views：760
(1) Positive electrode; The active material is generally lithium manganate or lithium cobalate. Now there is lithium nickel cobalt manganate material. Electric bicycles use Lithium iron phosphate, and conductive collectors use electrolytic aluminum foil with a thickness of 10-20 microns.
(2) Diaphragm; A special composite membrane that allows ions to pass through, but is an insulator for electrons.
(3) Negative electrode; The active substance is graphite or carbon with a similar graphite structure, and the conductive collector uses electrolytic copper foil with a thickness of 7-15 microns.
(4) Organic electrolyte; Carbonate solvent dissolved with Lithium hexafluorophosphate, and gel electrolyte used for polymer.
(5) Battery casing; It is divided into steel shell (currently rarely used in square shape), aluminum shell, nickel plated iron shell (used in cylindrical batteries), aluminum plastic film (soft packaging), and other types. There is also a battery cover, which is also the positive and negative electrode outlet of the battery.
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