Lithium battery classification and composition analysis

Lithium battery classification 1. Two classification methods used in the market: classification by pole piece material and classification by product appearance. A. Cathode materials classified by pole piece material: lithium iron phosphate battery (LFP), lithium cobalt oxide battery (LCO), lithium manganese oxide battery (LMO), (binary battery: lithium nickel manganate/lithium nickel cobalt oxide), (Ternary: Lithium Nickel Cobalt Manganese Battery (NCM), Lithium Nickel Cobalt Aluminum Oxide Battery (NCA)) Anode Material: Lithium Titanate Battery (LTO), Graphene Battery, Nano Carbon Fiber Battery Importantly refers to graphene-based batteries, that is, graphene slurry is added to the pole piece, or graphene coating is added to the separator. Lithium nickelate and magnesium-based batteries basically do not exist in the market. B. According to the product appearance classification, it is divided into: cylinder, soft bag, and square. Cylindrical and square outer packagings are mostly steel shells or aluminum shells. The outer packaging of the soft pack is aluminum-plastic film. In fact, the soft pack is also a square shape. In the market, it is customary to call the aluminum-plastic film packaging as a soft pack. Some people call the soft pack battery a polymer battery. Regarding cylindrical lithium batteries, their model is generally 5 digits. The first two digits are the diameter of the battery, and the middle two digits are the height of the battery. The unit is millimeters. For example, the 18650 lithium battery has a diameter of 18 mm and a height of 65 mm. C. According to different electrolyte materials, lithium batteries are divided into liquid lithium batteries (LIB) and polymer lithium batteries (PLB). Liquid lithium batteries use liquid electrolytes (currently power batteries are mostly of this type). Polymer lithium batteries are replaced by solid polymer electrolytes, which can be dry or colloidal, and most of them currently use polymer gel electrolytes. Regarding solid-state batteries, in a strict sense it means that the electrodes and electrolyte are both solid. D. According to the practical performance of the battery, power battery and energy battery are classified. Energy batteries are characterized by high energy density and are mainly used for high energy output; power batteries are characterized by high power density and are mainly used for batteries with instantaneous high power output and output. The power energy lithium battery is accompanied by the emergence of plug-in hybrid vehicles. It requires the battery to store high energy, which can support pure electric driving for a certain distance, but also has good power characteristics, and enters the hybrid mode when the battery is low. Simply understand, the energy type is similar to a marathon runner. To have stamina, it requires high capacity and does not require high current discharge performance; then the power type is a sprinter, fighting for bursting power, but endurance is required, otherwise the capacity is too You can't run far when you are young. Lithium battery materials constitute four main materials: positive electrode material, negative electrode material, separator, electrolyte auxiliary materials: NMP, copper foil, aluminum foil, aluminum cover plate, conductive agent, binder, and others (EMD). Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.