Introduction of lithium iron phosphate battery and five advantages

What is a lithium iron phosphate battery?

The inside of a lithium-ion battery is mainly composed of a positive electrode, a negative electrode-electrolyte and a separator. The lithium-ion battery's positive, negative electrode and electrolyte will have different performances and names depending on the materials used. At present, the more common lithium-ion batteries on the market are divided into lithium cobalt oxide (LiCoO2) and lithium manganese oxide (LiMn2O4), and the protagonist in this article is lithium iron phosphate (LiFePO4).

Lithium iron phosphate batteries have at least five significant advantages.

1. Safe and longevity

Compared with the more common lithium cobalt oxide and lithium manganate batteries currently on the market, lithium iron phosphate batteries have at least the following five significant advantages: higher safety, longer service life, and no heavy metals and rare metals. (The cost of raw materials is low), supports fast charging and has a wide operating temperature range.

2. Higher security

Lithium iron phosphate completely solves the safety hazards of lithium cobalt oxide and lithium manganate, the structure is more stable, and it is not easy to release oxygen.

3. Longer service life

At present, most of the lithium-ion batteries used in mobile power sources on the market have a cycle life of about 500-800 times, while lithium iron phosphate batteries have a service life of at least 2000 times at 80% DOD. Therefore, if the internal storage unit of the mobile power supply is a product of lithium iron phosphate, it has an absolute advantage of expected service life.

The positive electrode material of lithium iron phosphate battery does not contain precious metals and rare metals, so it is more environmentally friendly and can effectively reduce environmental pollution. In addition, a wide range of material sources also makes its material cost lower and has a better price advantage.

4. Fast charging

In terms of charging speed, lithium iron phosphate also has more significant advantages. The feature of supporting fast charging allows it to support a charging speed of at least 2C. It can significantly shorten the charging time. At present, most portable power supplies on the market use the standard 5V charging voltage, and the charging current is usually 0.2C.

5. Widely operating temperature range

Compared with other lithium-ion batteries, lithium iron phosphate batteries have a more extensive operating temperature range, which can generally work from -20°C to +75°C. Some lithium iron phosphate batteries with high-temperature resistance can also operate in It usually works in the range of 350°C to 500°C, which has more advantages than the 200°C limit value of lithium manganate and lithium cobalt oxide.