Lithium iron phosphate battery is actually the cathode material of a lithium ion battery, so people will name it lithium iron phosphate battery after its cathode material.

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Detailed explanation of lithium iron phosphate battery The full name of lithium iron phosphate battery is lithium iron phosphate lithium ion battery, this name is too long, referred to as lithium iron phosphate battery. Because its performance is particularly suitable for power applications, the word "power" is added to the name, that is, lithium iron phosphate power battery. Some people also call it "lithium iron (LiFe) power battery.
working principle

Lithium iron phosphate battery refers to a lithium ion battery using lithium iron phosphate as a positive electrode material. The cathode materials of lithium-ion batteries mainly include lithium cobalt oxide, lithium manganate, lithium nickel oxide, ternary materials, lithium iron phosphate, etc. Among them, lithium cobalt oxide is the cathode material used in the vast majority of lithium-ion batteries.
significance In the metal trading market, cobalt (Co) is the most expensive, and there is not much storage, nickel (Ni) and manganese (Mn) are cheaper, and iron (Fe) has more storage. The price of the cathode material is also consistent with the price of these metals. Another feature of it is that it is environmentally friendly and pollution-free. As a rechargeable battery, the requirements are: high capacity, high output voltage, good charge-discharge cycle performance, stable output voltage, Capable of high current charge and discharge, electrochemical stability, safe in use (will not cause burning or explosion due to improper operations such as overcharge, overdischarge and short circuit), wide operating temperature range, non-toxic or less toxic, no pollution to the environment . The lithium iron phosphate battery using LiFeP04 as the positive electrode has good performance requirements, especially in terms of large discharge rate discharge (5~10C discharge), stable discharge voltage, safety (non-burning, non-exploding), life (cycle times) ), no pollution to the environment, it is the best, and is currently the best high-current output power battery.
Structu
re and working principle

LiFePO4 is used as the positive electrode of the battery, which is connected to the positive electrode of the battery by an aluminum foil, and a polymer separator in the middle, which separates the positive electrode from the negative electrode, but the lithium ion Li can pass through but the electron e- cannot pass through, and the right side is composed of carbon (graphite) The negative electrode of the battery is connected to the negative electrode of the battery by copper foil. Between the upper and lower ends of the battery is the electrolyte of the battery, and the battery is hermetically sealed by a metal casing.
When LiFePO4 batteries are charged, the lithium ions L in the positive electrode migrate to the negative electrode through the polymer separator; during the discharge process, the lithium ions Li in the negative electrode migrate to the positive electrode through the separator. Lithium-ion batteries are named after lithium ions migrate back and forth during charging and discharging.