Ternary lithium-ion batteries have excellent electrochemical properties such as high energy density, good safety and stability, support for high-rate discharge, and moderate cost advantages. The battery field has been widely used.
Ternary material lithium-ion batteries are generally divided into ternary polymer lithium-ion batteries, ternary power lithium-ion batteries, and ternary low-temperature lithium-ion batteries.
1. Ternary polymer lithium-ion battery
Ternary
polymer lithium ion battery refers to a lithium ion battery whose
positive electrode material uses nickel cobalt lithium manganate ternary
positive electrode material and uses 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.
For the ternary
power lithium-ion battery, the one with the most research and the most
mature technology is Japan's Panasonic Corporation, which can achieve
30C discharge in the experimental stage, among which the power-type
18650 ternary lithium-ion battery has been successfully commercialized
and mass-produced. The discharge rate can reach 12C, and the capacity is
also as high as 3300mAh.
3. Ternary low temperature lithium-ion battery
The
low-temperature characteristics of lithium-ion batteries are mainly
examined 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.
BENZO Energy Technology Co.,Ltd
UFine Technology Co., Ltd
Site: www.bz-battery.com / www.benzoenergy.com
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