Which is better, a ternary lithium battery or a lithium iron phosphate battery?

Introduction Which is better, a ternary lithium battery or a lithium iron phosphate battery? Ternary lithium battery and lithium iron phosphate battery each have their own advantages, and you can choose according to your needs. 1. Ternary lithium battery has high ener

Which is better, a ternary lithium battery or a lithium iron phosphate battery?

Ternary lithium batteries and lithium iron phosphate batteries each have their own advantages, and you can choose according to your needs.

1. Ternary lithium battery

High energy density and good cycle performance are more suitable for the future development trend of new energy vehicle batteries. . Suitable for northern climatic conditions and more stable at low temperatures; Disadvantages: The high temperature structure of Ni-Co-Al is unstable, resulting in poor high temperature safety and causing danger. However, this problem can be solved through various systems, but the current cost is relatively high.

2. Lithium iron phosphate battery

It features higher safety, longer life, low raw material cost, supports fast charging, and has a wide range offunctioning. temperature range. The stability is the best among current automobile lithium batteries; Disadvantages: There is still a large gap in energy density compared to ternary lithium batteries. When the temperature drops below a certain level, charging efficiency decreases and battery capacity is affected. Models using lithium iron phosphate batteries are not suitable for driving in the north.

Why do low temperatures affect lithium iron phosphate batteries?

The positive electrode of the lithium iron phosphate battery itself has poor electronic conductivity and is prone to polarization in low temperature environments, thereby reducing the battery capacity . Affected by low temperature, the insertion speed of graphite-lithium. is reduced and it is easy to form lithium on the surface of the electricnegative trode. The metallic lithium is precipitated. A certain amount of lithium metal continues to exist on the surface of the negative electrode, which is very likely to form lithium dendrites and affect the safety of the battery.

At low temperatures, the viscosity of the electrolyte will increase and the resistance to lithium ion migration will also increase. In addition, adhesive is also a very critical factor in the production process of lithium iron phosphate batteries. Low temperature This will also have a greater impact on the performance of the adhesive.

In addition, the low temperature causes lithium metal dendrites to precipitate on the surface of the negative electrode. This reaction will consume the lithium ions in the battery that can be charged and discharged repeatedly, and will significantly reduce the charge. battery capacity. Precipitated lithium metal dendrites.The diaphragm may also be punctured, affecting safety performance.

Currently, lithium iron phosphate and lithium ternary batteries are the most commonly used in new energy vehicles on the market. Batteries are the most important factor affecting vehicle endurance. There are many opinions about these two batteries. Some people say lithium iron phosphate batteries are better, while others say ternary lithium batteries are best. So which one is better?

Let's talk about lithium iron phosphate batteries first. Lithium iron phosphate battery has low energy density and high safety, but its cost is relatively low, its low temperature performance is poor, and it consumes power quickly when the temperature is relatively low and loses more power when it loses energy. CepenHowever, its lifespan is longer than that of ternary lithium batteries.

Let's talk about ternary lithium batteries. The power of ternary lithium battery is higher than that of the same volume, so the battery life of new energy vehicles using ternary lithium batteries will be more realistic. The ternary lithium battery is less affected by temperature, and battery failure is also relatively low. The energy attenuation is only 0.0363% per 10,000 kilometers.

In general, these two batteries have their own advantages and disadvantages. It's up to you. How to choose a vehicle. We also need to take good care of our battery when we use the car, so that the life of the vehicle is longer.

The ternary lithium battery we use from CATL is more expensive, performs better in various usage scenarios and the experience isMore comfortable.

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