Lithium iron phosphate battery is a lithium-ion battery that uses lithium iron phosphate (LiFePO4) as the positive electrode material and carbon as the negative electrode material. The rated voltage of a single cell is 3.2V, and the charging cut-off voltage is 3.6V~3.65V.

During the charging process, some lithium ions in lithium iron phosphate are released and transferred to the negative electrode through the electrolyte, where they are embedded in the negative electrode carbon material; At the same time, electrons are released from the positive electrode to reach the negative electrode from the external circuit, maintaining the balance of the chemical reaction. During the discharge process, lithium ions are released from the cathode and reach the positive electrode through the electrolyte. At the same time, electrons are released from the negative electrode and reach the positive electrode from the external circuit, providing energy to the outside world.  

Lithium iron phosphate batteries have the advantages of high operating voltage, high energy density, long cycle life, good safety performance, low self discharge rate, and no memory effect.

physical property:

Under normal circumstances, it is a gray or reddish gray solid that is insoluble in water.

chemical property:

Electrochemical characteristics: theoretical specific capacity of 170mAh/g, initial coulombic efficiency>90%, operating voltage range of 3.0V-4.2V;

Stability: Long cycle life (capacity decay<10% after hundreds of charge and discharge cycles), high thermal stability, and structure is not easily changed at high temperatures;

Safety: Good chemical stability, less likely to cause side reactions with electrolytes, and superior safety compared to other lithium compounds.