Interpretation of the advantages of lithium iron phosphate batteries

What is a lithium iron phosphate battery? The interior of a lithium battery is mainly composed of a positive electrode, a negative electrode electrolyte and a separator. The positive electrode, negative electrode and electrolyte of a lithium battery will have different performance and different names depending on the materials used. Lithium batteries currently on the market are generally divided into lithium cobalt oxide (LiCoO2), lithium manganese oxide (LiMn2O4), and lithium iron phosphate (LiFePO4), the protagonist of this article. As a kind of lithium battery, lithium iron phosphate is mainly used in the field of electric power system, such as electric vehicles, military aerospace, power tools, UPS and so on. Due to its excellent structural stability, safety performance and service life, it is more suitable for use in the field of power systems. Compared with lithium batteries using other cathode materials, lithium iron phosphate batteries have at least five advantages. Five major advantages: safety and long life. Compared with common lithium cobalt and lithium manganese batteries on the market, lithium iron phosphate batteries have at least five advantages: higher safety, longer service life, and no heavy or rare metals (raw material cost). Low), fast charging support, and wide operating temperature range. Higher safety The power of iron phosphate completely solves the potential safety problems of lithium cobalt and lithium manganate, which is reflected in the chemical bond of phosphoric acid is more stable than the traditional metal oxide structure and chemical bond structure, and it is difficult to release oxygen. Longer service life At present, most of the lithium batteries used in mobile power sources on the market have a cycle life between 500 and 800 times, while the service life of lithium iron phosphate batteries is at least 2000 times, and its capacity can be maintained at 80%. the above. Therefore, if the internal storage unit of the mobile power supply is a lithium iron phosphate product, it has the absolute advantage of a normal service life. The cathode material of lithium iron phosphate battery does not contain precious metals and rare metals, so it is more environmentally friendly and can effectively reduce environmental pollution. In addition, the wide variety of materials also makes the material cost lower and the price advantage is better. In terms of charging speed, lithium iron phosphate also has greater advantages. The feature of supporting fast charging enables it to support at least 2C charging speed (C is the charging parameter, such as 1000mAh battery capacity, 2C current is 1000mA×2u003d2000mA). Can greatly shorten the charging time. At present, most mobile power sources on the market use a standard charging voltage of 5V, and the charging current is generally 0.2c. Compared with other lithium batteries, lithium iron phosphate batteries have a wider operating temperature range and work normally from -20C to +75C. Some high-temperature-resistant lithium iron phosphate batteries can also work normally between 350 ℃ and 500 ℃, which is more advantageous than the 200 ℃ limit of lithium manganese and lithium cobalt. Therefore, the obvious advantages of lithium iron phosphate relative to lithium cobalt and lithium manganese are high safety, support for fast charging (high current charging) and a wider operating temperature range. It will allow consumers to use lithium batteries in harsh environments without worrying about their safety. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: Classification and characteristics of polymer lithium batteries