LiFePO4 battery BOM, there are four main: positive electrode material, negative electrode material, electrolyte and separator.
LiFePO4 battery is a lithium-ion battery that uses LiFePO4 as the positive electrode material and carbon as the negative electrode material.
1. LiFePO4 battery BOM cathode material
The most commonly used materials for cathode materials are lithium cobalt oxide, lithium manganate, lithium iron phosphate and ternary materials (polymers of nickel, cobalt and manganese). The positive electrode material occupies a large proportion (the mass ratio of positive and negative electrode materials is 3:1~4:1), because the performance of the positive electrode material directly affects the performance of the lithium battery pack, and its cost also directly determines the cost of the battery.
2. LiFePO4 battery BOM anode material
At present, the anode materials are mainly natural graphite and artificial graphite. Anode materials play an important role in improving the capacity and cycle performance of batteries, and are at the core of the midstream of the lithium battery industry.
3. LiFePO4 battery BOM separator material
The market-oriented diaphragm materials are mainly polyolefin diaphragms based on polyethylene and polypropylene. In the structure of lithium batteries, the separator is one of the key inner layer components. The performance of the separator determines the interface structure and internal resistance of the battery, which directly affects the capacity, cycle and safety performance of the lithium battery pack.
4. LiFePO4 battery BOM electrolyte
The electrolyte is generally prepared from high-purity organic solvents, electrolyte lithium salts, necessary additives and other raw materials under certain conditions and in a certain proportion. The electrolyte plays the role of conducting ions between the positive and negative electrodes of the lithium battery, which is the guarantee for the lithium iron phosphate battery to obtain the advantages of high voltage and high specific energy.