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Is Lithium Iron Phosphate Battery safe?

Nov. 19, 2019

Now, people buying new energy vehicles objectively choose between Lithium Iron Phosphate Battery and ternary lithium battery technology. People in the industry tell us: the ternary system that emphasizes the endurance and light weight of the vehicle. Lithium iron phosphate is selected for safety. In this regard, consumers are eager to give the industry a practical answer from a technical point of view: Is lithium iron phosphate battery safe? This question should be answered in terms of material/structural stability, production process, and charge and discharge characteristics.

During the charging process, part of the lithium ions in the lithium iron phosphate are extracted, transferred to the negative electrode through the electrolyte, and embedded in the negative carbon material; at the same time, electrons are released from the positive electrode, and the negative electrode is maintained from the external circuit to maintain the balance of the chemical reaction.

First, as a LiFePO4 Battery Wholesale, let's talk about the definition of lithium iron phosphate battery. During the discharge process, lithium ions are released from the negative electrode, reach the positive electrode through the electrolyte, and the negative electrode releases electrons, and the external circuit reaches the positive electrode to provide energy to the outside.

LiFePO4 2000mAh 3.2V

LiFePO4 2000mAh 3.2V

Lithium iron phosphate battery has the advantages of high working voltage, high energy density, long cycle life, good safety performance, small self-discharge rate and no memory effect.

1. Lithium iron phosphate is currently the safest cathode material for lithium-ion batteries. It does not contain any heavy metal elements harmful to human body. It is difficult to precipitate oxygen in the olivine structure, which improves the stability of the material.

2. The production process of lithium iron phosphate battery is almost the same as that of other lithium battery types. The core processes are: batching, coating, rolling, sheeting and winding. In the compounding process, the lithium iron phosphate material has relatively poor conductivity. Therefore, 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 be maintained while working. The battery is in a stable state.

3. Charge and discharge are two basic working conditions of lithium batteries. When the lithium iron phosphate battery is charged and discharged, since the iron ion oxidation ability is not strong, oxygen is not released, and it is naturally difficult to generate a redox reaction with the electrolyte, which makes the lithium iron phosphate battery charge and discharge process in a safe environment. Not only that, lithium iron phosphate batteries are difficult to undergo a vigorous redox reaction during large-rate discharge and even during overcharge and discharge. At the same time, after deintercalation of lithium, the lattice change causes the final volume of the unit cell (the smallest constituent unit of the crystal) to shrink, which just offsets the increased volume of the carbon negative electrode in the reaction. Therefore, in the charge and discharge, the lithium iron phosphate battery It can maintain the stability of the physical structure and eliminate the hidden danger of battery explosion caused by the increase in volume. Our company also has LiFePO4 2000mAh 3.2V for sale. Welcome everyone to consult.

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