-Is lithium iron phosphate battery safe or not?

Is lithium iron phosphate battery safe or not?
author:enerbyte source:本站 click135 Release date: 2023-12-08 08:39:51
abstract:
1. Lithium iron phosphate is currently a safe positive electrode material for lithium-ion batteries, which does not contain any harmful heavy metal elements to the human body. Its olivine structure makes it difficult for oxygen to precipitate, improving the stability of the material....

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1. Lithium iron phosphate is currently a safe positive electrode material for lithium-ion batteries, which does not contain any harmful heavy metal elements to the human body. Its olivine structure makes it difficult for oxygen to precipitate, improving the stability of the material.

2. The production process of iron phosphate lithium-ion batteries is generally the same as other lithium-ion battery varieties, with core processes including ingredients, coating, rolling, slicing, and winding. In the ingredient process, the conductivity of lithium iron phosphate material is relatively poor, so the particles are generally made smaller. The objective effect of this is that the internal arrangement is more uniform, which promotes the formation of a balanced voltage platform and can maintain the stability of the battery during operation.

3. Charging and discharging are two basic working states of lithium-ion batteries. When lithium iron phosphate batteries are charged and discharged, due to the weak oxidation ability of iron ions, oxygen will not be released, making it difficult to undergo redox reactions with the electrolyte. This makes the charging and discharging process of lithium iron phosphate batteries in a safe environment. Moreover, lithium iron phosphate batteries are difficult to undergo drastic redox reactions during high rate discharge and even overcharging and discharging processes. At the same time, after lithium is deintercaled, the lattice change causes the final volume of the crystal cell (the small constituent unit of the crystal) to decrease, which precisely offsets the additional volume of the carbon negative electrode in the reaction. Therefore, during charging and discharging, lithium iron phosphate batteries can maintain the stability of their physical structure, eliminating the hidden danger of battery explosion caused by volume increase.

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