Advantages and disadvantages of lithium iron phosphate battery

　　At present, lithium batteries carried by new energy vehicles are mainly lithium iron phosphate batteries represented by BYD and ternary lithium batteries represented by Tesla.

　　The biggest difference between the two materials is that lithium iron phosphate battery does not contain cobalt and nickel.

　　In the past, the market share of ternary lithium batteries for many years was more than 60%, occupying the mainstream of the market.

　　In short, lithium iron phosphate battery is a lithium ion battery that uses lithium iron phosphate as the cathode material only. This type of battery is characterized by no precious metal elements.

　　Therefore, lithium iron phosphate battery has advantages in cost. After all, the price of precious metals has been rising due to the problem of reserves in recent years.

　　The ternary lithium battery refers to the lithium battery which uses lithium nickel cobalt manganate as the cathode material and graphite as the cathode material. Unlike lithium iron phosphate, the ternary lithium battery has a high voltage platform, which means that the specific energy and specific power of the ternary lithium battery are higher under the same volume or weight.

　　That is to say, the ternary lithium battery can store more power and has better endurance than the lithium iron phosphate battery. It won't happen. The car runs out of power after driving for a while. It's an embarrassing scene that I have to go to charge it.

　　Generally speaking, the disadvantages of lithium iron phosphate battery are more obvious.

　　1. Poor consistency. The service life of lithium iron phosphate battery pack is obviously lower than that of monomer. Compared with other batteries, lithium iron phosphate battery pack has no obvious advantage in service life. In the secondary market, there are a large number of battery packs that have not reached their expected life.

　　2. Poor low-temperature performance. When the temperature is lower than 0 ℃, the capacity drops rapidly, and the cycle performance is extremely poor at low temperature.

　　3. In the sintering process of lithium iron phosphate preparation, it is possible that iron oxide can be reduced to simple iron under high temperature reducing atmosphere. Iron, the most taboo substance in batteries, can cause micro short circuit of batteries.

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