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Ternary material lithium ion battery classification
2022-08-12
1. Ternary polymer lithium-ion battery
Ternary polymer lithium ion battery refers to a lithium ion battery with a ternary positive electrode material using nickel cobalt lithium manganate (Li(NiCoMn)O2) and a gel polymer electrolyte. As a transport medium for ion movement, electrolyte is generally composed of solvent and lithium salt. The electrolyte of lithium secondary battery mainly includes liquid electrolyte, ionic liquid electrolyte, solid polymer electrolyte and gel polymer electrolyte. Its greatest advantage is the high mechanical strength of the membrane and the large surface area provided by the membrane. The thinner the film, the higher the energy density because more active species can be embedded in the battery.
2. Ternary power lithium-ion battery
The so-called power ternary lithium-ion battery means that the battery supports high-rate and high-current discharge, has high power density, and releases more energy per unit time. The rate discharge capability refers to the ability to maintain the battery capacity when the charge and discharge rate is increased. The rate of charge and discharge is represented by xC, 1C means that the nominal capacity of the battery can be used up in 1h, while the rate of discharge at 2C can be used for 30min.
The low-temperature characteristics of lithium-ion batteries are mainly investigated from the low-temperature discharge characteristics and cycle life. The most important thing for low-temperature batteries is to maintain the fluidity of materials under low temperature conditions, so that lithium ions can freely shuttle between the positive and negative electrodes to realize the charging and discharging of the battery. . At present, ternary lithium-ion battery manufacturers at home and abroad can basically achieve a discharge temperature of -20 degrees, and the discharge capacity is greater than 50%, and the cycle life is about 400 times, which can fully meet the needs of ordinary electrical appliances and power consumption scenarios.
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