What are the differences between lithium ion and lithium iron phosphate batteries?


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There are some similarities between lithium-ion batteries and lithium iron phosphate batteries, but there are significant differences in terms of heat resistance, life cycle, environmental protection, and safety. Most people are familiar with lithium-ion batteries because they are used in many 3C digital products. Lithium-ion batteries have a graphite anode and their cathode can consist of either lithium manganese oxide or lithium cobalt oxide.

There are significant differences in electrical energy storage between lithium-ion batteries and lithium iron phosphate batteries, with lithium-ion batteries having a higher energy density than lithium iron phosphate batteries. In the case of storing the same capacity of electrical energy, lithium iron phosphate batteries are slightly heavier and larger than lithium ion batteries. Therefore, lithium-ion batteries are usually the first choice for high power consumption electronic products.

Lithium iron phosphate batteries are a new type of battery in which the cathode of lithium iron phosphate is iron phosphate and the anode is graphite. This type of battery is widely used in electronics or machines that do not require extremely high energy density. For example, electric vehicles, medical equipment and electric equipment in high temperature environments. This is because lithium iron phosphate batteries are recognized by the manufacturing industry due to their good safety performance, lower material cost, stable high temperature resistance and longer service life.

On the other hand, the discharge rate of LiFePO4 battery is better than that of Li-ion battery. People usually use C-rate to express the discharge rate and charging rate of the battery.C-rate means the reciprocal of the time needed for charging or discharging in hours. For example, a 1C rate means that the battery can be fully charged or discharged in 1 hour, and a 0.5C rate means that the battery can be fully charged or discharged in 2 hours. Lithium-ion batteries have a charging rate of 0.7C to 1C, and a discharge rate of 1C. lithium iron phosphate has a charging rate of 1C, and a discharge rate of 1C-25C, and can sometimes be discharged in as little as 2 minutes and 4 seconds.

Lithium iron phosphate and lithium ion batteries have good long-term power storage. Lithium iron phosphate has an electrical energy storage period of 350 days or more, and lithium ion batteries have a shelf life of about 300 days. Lithium iron phosphate batteries can be recharged up to tens of thousands of times. Moreover, the discharge performance of lithium iron phosphate batteries is still excellent under higher temperature environment. For lithium-ion, higher energy density makes it more unstable, especially in higher operating temperature environment, too much charging will cause damage to lithium-ion batteries, lithium-ion batteries can be recharged thousands of times.

Compared with lithium-ion batteries, lithium iron phosphate batteries have good thermal and chemical stability, and lithium iron phosphate batteries are safer. This kind of battery can maintain normal condition even when working under higher temperature environment. Generally, Li-FePO4 batteries will not burn or explode when overcharged or overheated. Manufacturers in all industries favor the use of lithium iron phosphate batteries.

Another major advantage of lithium iron phosphate batteries is in the disposal of the batteries after use. Chemicals such as lithium cobalt dioxide are considered a hazardous material and are the main ingredient in lithium ion batteries. It can cause allergic reactions in the eyes and skin when exposed to air, and ingesting it can lead to serious medical problems. That’s why manufacturers recycle used lithium-ion in special ways.

Henan Cns Energy Technology Co.,Ltd.[https://cnsnrg.com/] has been focusing on the energy industry for more than ten years, and our products cover lithium-ion batteries, lead-acid batteries, polymer lithium-ion batteries, nickel-metal hydride batteries and so on, which are widely used in the fields of mobile communications, electric vehicles, energy storage systems, industrial equipment and so on. Our company was founded in 2011, relying on science and technology, the company has a set of strict quality control system, each product is carefully inspected, layer by layer, keep improving. Superior quality, cost-effective, wide temperature range, good sealing performance, long storage life, smooth discharge voltage, safe to use, well received by customers.

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