Why LiFePo4 batteries are safer than lithium-Ion

How safe are LiFePO4 batteries?This topic should be addressed from three perspectives: material/structural stability, manufacturing processes, and charge-discharge characteristics.

Are Lifepo4 batteries safe? Why LifePo4 Batteries Are Safer Than Lithium-Ion

1.Lithium iron phosphate batteries are currently the safest cathode material for lithium ion batteries. It has no heavy metal components that are toxic to the human body. The oxygen in the olivine structure is difficult to separate, increasing the material’s stability.

2.The manufacturing method for lithium iron phosphate battery packs is similar to those of other lithium battery types. The main operations include batching, coating, rolling, filming, and winding. Because lithium iron phosphate materials have low conductivity during the batching process, the particles are often reduced in size. The desired result is that the internal arrangement becomes more uniform, promoting the establishment of a balanced voltage platform that can be maintained throughout operation. The battery is steady.

3.Lithium battery packs have two main operational states: charging and discharging. When the lithium iron phosphate battery pack is charged and discharged, because of the weak oxidizing ability of iron ions, it will not release oxygen, so it is naturally difficult to have a redox reaction with the electrolyte, making the charging and discharging process of the lithium iron phosphate battery in a safe environment.

Furthermore, the lithium iron phosphate battery pack is resistant to strong redox reactions during high-rate discharge, including overcharge and discharge. At the same time, once the lithium is deintercalated, the lattice shift reduces the final volume of the unit cell, canceling out the increased volume of the carbon negative electrode during the process. As a result, the lithium iron phosphate battery pack can retain the physical structure’s stability when charging and discharging, eliminating the hidden threat of battery explosion due to volume rise.

The P-O bond in the lithium iron phosphate crystal is stable and difficult to break down. Even at high temperatures or during overcharging, it does not collapse and release heat like lithium cobalt oxide or form powerful oxidizing chemicals, indicating that lithium battery packs are safe. According to reports, a limited number of samples were discovered to be burning during acupuncture or short-circuit trials in real operation, but no explosion happened.

Will lithium-iron phosphate batteries explode?

Lithium batteries seldom explode. In regular usage, lityum demir fosfat piller are quite safe. But nothing is absolute. In certain severe circumstances, it may still be harmful. This is mostly determined by each company’s material selection, ratio, method, and subsequent usage.

Although the thermal and structural stability of lithium iron phosphate material are the greatest among all cathode materials in terms of thermodynamics, and it has also been proven in the real safety performance test, the potential of a short circuit between the material and the battery And, by happenstance, it is arguably the least secure.

1.The lithium iron phosphate battery pack has high efficiency output, with a typical discharge of 2-5C, continuous high-current discharge up to 10C, and instantaneous pulse discharge up to 20C.

2.Good performance at high temperatures: when the exterior temperature is 65 °C, the internal temperature may reach 95 °C, and when the battery is depleted, the temperature can reach 160 °C, yet the battery structure remains safe and intact.

3.Even if the battery is damaged internally or externally, it does not burn, explode, and has the highest level of safety.

4.Excellent cycle life: after 500 cycles, the discharge capacity remains more than 95%.

5.It can be charged fast; the battery can be completely charged in 40 minutes at 1.5C using a special charger, and the beginning current can exceed 2C.

6.No memory effect: regardless of the status of the lithium iron phosphate battery pack, it may be utilized at any time without the need to drain it before charging.

7.Small in size and light in weight, the volume of the lithium iron phosphate battery of the same specification and capacity is one-third that of the lead-acid battery, as is its weight.

Finally, when compared to other lithium batteries, lithium iron phosphate battery packs provide the highest level of safety. At the same time, the battery has a long service life, can charge and discharge at high currents, and is lightweight.

Lithium iron phosphate batteries are the safest lithium batteries available, and as a result, they have become one of the most popular types of electric car batteries. With domestic lithium battery manufacturers’ rising demand for battery performance, all manufacturers should aggressively enhance the performance of lithium battery goods, including discharge rate and safety.