What is Lithium Iron Phosphate? An Introduction to the Synthesis of Lithium Iron Phosphate

What is Lithium Iron Phosphate? An Introduction to the Synthesis of Lithium Iron Phosphate

Lithium iron phosphate is an electrode material for lithium-ion batteries with the chemical formula LiFePO4 (LFP for short), which is mainly used in various lithium-ion batteries. It has the characteristics of large discharge capacity, low price, non-toxicity and no environmental pollution, but the low energy density affects the capacitance.

Method for synthesizing lithium iron phosphate

The main production methods of lithium iron phosphate include high temperature solid phase synthesis method and liquid phase synthesis method. I'm here.

1. Solid phase synthesis

(1) High-temperature solid-state reaction method: The most popular and mature synthesis method at present. Nitrogen-protected push plate furnace, mesh belt furnace and rotary furnace are used for sintering.

(2) Carbothermal Reduction (CTR): The synthesis method is simple, the operation is simple, the raw material price is low, and it is suitable for mass production.

(3) Microwave synthesis method: Short synthesis time, low energy consumption, suitable for laboratory research.

(4) Mechanical alloying method:

2. Liquid phase synthesis method:

(1) liquid phase coprecipitation method,

(2) sol-gel method,

(3) hydrothermal synthesis method

3. Other synthesis methods: Discharge plasma sintering technology, spray pyrolysis technology and pulsed laser deposition technology are also used to synthesize lithium iron phosphate.

(LASER WELDING MACHINE FOR BATTERY)

The performance of lithium-ion batteries mainly depends on the cathode and anode materials, and its safety performance and cycle life are unmatched by other materials, which are also the most important technical indicators of power batteries. 1C charge/discharge cycle life is up to 2000 times. Single cell battery overcharge voltage 30V will not burn and will not explode if punctured. Lithium iron phosphate cathode material facilitates the use of high-capacity lithium-ion batteries in series. To meet the frequent charging and discharging needs of electric vehicles. It has advantages such as non-toxic, non-polluting, good safety performance, wide range of raw materials, low price and long life. It is an ideal cathode material for the new generation of lithium-ion batteries.