With the promotion of social energy conservation and environmental protection, more and more environmentally friendly products have been applied to the market. The ternary lithium batteries quickly occupied the market with many advantages in the battery industry and gradually replaced traditional lead-acid batteries. For conventional batteries, ternary lithium batteries have the benefits of long life, energy-saving, environmental protection, no pollution, low maintenance costs, complete charge and discharge, lightweight, etc.

Ternary lithium battery

What is a ternary lithium battery?

In nature, lithium is the lightest metal with the most negligible atomic mass, and its atomic weight is 6.94g/mol, ρ=0.53g/cm3. Lithium is chemically active. It is easy to lose electrons and oxidize to Li+, so the standard electrode potential is negative -3.045V, and the electrochemical equivalent is the smallest, which is 0.26g/Ah. Materials with a very high specific energy. Ternary lithium battery is a secondary lithium battery using three transition metal oxides of nickel, cobalt, and manganese as positive electrode materials. It fully integrates the good cycle performance of lithium cobaltate, the high specific capacity of lithium nickelate, and the high safety and low cost of lithium manganate. It uses molecular level mixing, doping, coating, and surface modification to synthesize nickel. It is a lithium-ion rechargeable battery that has been widely researched and applied.

Ternary lithium battery life

The so-called lithium battery life means that after the battery has been used for a while, the capacity decays to 70% of the nominal capacity (the capacity of the battery at room temperature 25°C, normal atmospheric pressure, and the battery capacity discharged at 0.2C), which can be considered as the end of life. The cycle life is generally calculated by the number of complete discharge cycles of lithium batteries. In the process of use, irreversible electrochemical reactions will occur inside the lithium battery, resulting in a decrease in capacity, such as the decomposition of the electrolyte, the deactivation of active materials, and the collapse of the positive and negative structures, resulting in a reduction in the number of lithium ions intercalated and deintercalated, etc. . Experiments have shown that a higher rate of discharge will lead to faster capacity decay. If the discharge current is lower, the battery voltage will be close to the equilibrium voltage, and more energy can be releasing more.

The academic life of a ternary lithium battery is about 800 cycles, which is medium among commercial rechargeable lithium batteries. Lithium iron phosphate is about 2,000 cycles, while lithium titanate is said to be capable of 10,000 cycles. At present, mainstream battery manufacturers promise more than 500 times (charge and discharge under standard conditions) in their ternary battery specifications. The resistance cannot be precisely the same, and its cycle life is about 400 times. The manufacturer recommends that the SOC use window is 10%~90%. It is not recommended to perform deep charge and discharge; otherwise, it will cause irreversible damage to the positive and negative structure of the battery. If it is calculated by shallow and shallow discharging, the cycle life is 1000 times. In addition, if the lithium battery is often discharged in a high rate and high-temperature environment, the battery life will be significantly reduced to less than 200 times.

The number of life cycles of a lithium battery is determined according to the battery quality and battery material:

1. The cycle times of the ternary material are about 800 times.

2. The number of lithium iron phosphate batteries cycles is about 2500 times.

3. There is a difference between the cycle times of genuine batteries and defective batteries. Genuine batteries are designed and produced according to the battery manufacturer's specification cycle times, while the cycle times of faulty batteries may sometimes be less than 50 times.

Ternary lithium battery life

The so-called lithium battery life means that after the battery has been used for a while, the capacity decays to 70% of the nominal capacity (the capacity of the battery at room temperature 25°C, normal atmospheric pressure, and the battery capacity discharged at 0.2C), which can be considered as the end of life. The cycle life is generally calculated in the industry by the number of complete discharge cycles of lithium batteries. In the process of use, irreversible electrochemical reactions will occur inside the lithium battery, resulting in a decrease in capacity, such as the decomposition of the electrolyte, the deactivation of active materials, and the collapse of the positive and negative structures, resulting in a reduction in the number of lithium ions intercalated and deintercalated, etc. . Experiments have shown that a higher rate of discharge will lead to faster capacity decay. If the discharge current is lower, the battery voltage will be close to the equilibrium voltage, releasing more energy.

The academic life of a ternary lithium battery is about 800 cycles, which is medium among commercial rechargeable lithium batteries. Lithium iron phosphate is about 2,000 cycles, while lithium titanate is said to be capable of 10,000 cycles. At present, mainstream battery manufacturers promise more than 500 times (charge and discharge under standard conditions) in their ternary battery specifications. The resistance cannot be precisely the same, and its cycle life is about 400 times. The manufacturer recommends that the SOC use window is 10%~90%. It is not recommended to perform deep charge and discharge; otherwise, it will cause irreversible damage to the positive and negative structure of the battery. If it is calculated by shallow and shallow discharging, the cycle life is 1000 times. In addition, if the lithium battery is often discharged in a high rate and high-temperature environment, the battery life will be significantly reduced to less than 200 times.

Juda Lithium has long been manufacturing battery packs, ternary lithium batteries, lithium iron phosphate batteries, lithium iron manganate batteries, lithium-ion batteries, and so on. The products have a wide range of applications and are of high quality. Xin Power is the top battery brand in China.

In today's lithium battery market, ternary lithium battery is the most widely used one. It is moderate in performance and low in price. Therefore, the use of ternary lithium batteries is cost-effective. People always say that the ternary lithium battery has a long life. How long is it? Ternary polymer lithium battery is a lithium battery whose positive electrode material uses nickel cobalt lithium manganate (Li(NiCoMn)O2) ternary positive electrode material. The precursor product of ternary composite positive electrode material is nickel salt, cobalt salt, manganese salt. The raw material, nickel, cobalt, and manganese ratio can be adjusted according to actual needs. The battery with ternary material as the positive electrode is safer than the lithium cobalt oxide battery. Still, the voltage is too low, so it is used in mobile phones (the cut-off voltage of mobile phones is generally around 3.4V). ) will have a clear feeling of insufficient capacity.

Ternary lithium battery performance:

Materials that are relatively balanced in capacity and safety have better cycle performance than standard lithium cobalt oxide. In the early stage, due to technical reasons, the nominal voltage was only 3.5-3.6V, which limited the scope of use. With continuous improvement and perfect structure, the battery's nominal voltage has reached 3.7V, and the capacity has reached or exceeded the level of lithium cobalt oxide battery.

1. The voltage platform is high. The voltage platform is an essential indicator of the battery energy density, which determines the primary performance and cost of the battery. Therefore, the selection of battery materials is of great significance. The higher the voltage platform, the greater the specific capacity. The battery with the same volume, weight, and ampere-hour must have a more extended cruising range than a ternary material lithium battery with a higher voltage platform. The voltage platform of the ternary material is significantly higher than that of lithium iron phosphate, the high line can reach 4.2 volts, and the discharge platform can get 3.6 or 3.7 volts.

2. High energy density

3. High tap density