Lithium ion cells have now become the mainstream of the market, so what is the structure of Lithium ion cells? Here Xinghai Energy tells you the answer.
Lithium ion cell are composed of four important parts: positive electrode, negative electrode, non-aqueous electrolyte and diaphragm. Among them, the positive electrode and negative electrode contain active electrode substances, conductive agents, binders, etc., which are evenly coated on the copper and aluminium foil collector fluid.
The positive electrode active substance is generally lithium manganate or lithium cobaltate, lithium nickel cobalt manganate materials, electric bicycles are commonly used lithium nickel cobalt manganate or ternary + a small amount of lithium manganate, pure lithium manganate and lithium iron phosphate are gradually fading out due to large size, poor performance or high cost. Conductive electrode fluids use electrolytic aluminium foil with a thickness of 10 - 20 microns.
The diaphragm is a specially formed polymer film with a microporous structure that allows lithium ions to pass freely, but not electrons.
The active material of the negative electrode is graphite, or carbon with a structure similar to graphite, and the conductive collector is an electrolytic copper foil of 7-15 microns thickness.
The organic electrolyte has a lithium hexafluorophosphate carbonate solvent, while the polymeric one uses a gel electrolyte.
The battery casing is divided into steel, aluminium, nickel-plated iron), aluminium-plastic film, etc. There is also a battery cap, which is also the positive and negative lead end of the battery.
Lithium ion cell cathode potential is high, often embedded lithium transition metal oxide, or polyanionic compounds; lithium ion cell negative material is usually carbon materials; lithium ion cell electrolyte is important for non-aqueous solution, by organic mixed solvent and lithium salt composition, where the solvent is mostly carbonic acid and other organic solvents, lithium salt is mostly monovalent polyanionic lithium salts, such as lithium hexafluorophosphate; lithium ion cell diaphragm is mostly polyethylene, poly Polypropylene microporous film, to isolate the positive and negative material, to prevent electrons through the short circuit caused by, at the same time can let the electrolyte ions through the use of.
Xinghai Energy is a lithium ion cell manufacturer, all kinds of lithium ion cells for sale, if you want to order lithium ion cells wholesale, please call 86-19857259662 or 86-13718756298, e-mail sales@headway-lib.com, or log in to https://www.headway-lib.com/.
