What are the components of lithium-ion batteries?

Lithium ion batteries are a type of rechargeable battery that primarily relies on the movement of lithium ions between the positive and negative electrodes for operation.

During the charging and discharging process, Li+is intercalated and deintercaled back and forth between the two electrodes: during charging, Li+is deintercaled from the positive electrode, embedded into the negative electrode through the electrolyte, and the negative electrode is in a lithium rich state; When discharging, the opposite is true.

(1) Positive electrode - The active substance is generally lithium manganese oxide or lithium cobalt oxide, with nickel cobalt manganese oxide materials. Electric bicycles generally use nickel cobalt manganese oxide lithium (commonly known as ternary) or ternary+a small amount of lithium manganese oxide. Pure lithium manganese oxide and lithium iron phosphate gradually fade out due to their large volume, poor performance, or high cost. The conductive current collector uses electrolytic aluminum foil with a thickness of 10-20 microns.
(2) Diaphragm - a specially formed polymer film with a microporous structure that allows lithium ions to pass freely, while electrons cannot.
(3) Negative electrode - The active material is graphite or carbon with a similar graphite structure, and the conductive current 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 shell - divided into steel shell (rarely used in square shape), aluminum shell, nickel plated iron shell (used in cylindrical batteries), aluminum-plastic film (soft packaging), etc., as well as the battery cover, which is also the positive and negative terminals of the battery.

Guangzhou Battsys Co., Ltd (NEEQ:837375), was founded in 2006, which is a join-stock high-tech enterprise engaging in ODM and OEM , specially for customized and diverse research&production of lithium-ion battery，BATTSYS annual production capacity is tens of millions battery cells. The products are exported to dozens of countries & regions such as Europe, America & Asia etc.