Does the prospect of lithium iron phosphate battery better than ternary lithium battery?

In terms of the types of power batteries currently used in pure electric vehicles, lithium iron phosphate batteries and ternary lithium batteries are more common. Although both batteries can be charged and discharged repeatedly, their performance is different due to differences in materials. Does the prospect of lithium iron phosphate batteries have a better future than ternary lithium batteries? Wen Qing believes that this is not the case.

Lithium iron phosphate battery refers to a lithium-ion battery with lithium iron phosphate as the positive electrode material. This type of battery does not contain precious metal elements, so the cost of raw materials is relatively low. In addition, lithium iron phosphate batteries have the characteristics of high temperature resistance and stability, and have a long service life. Therefore, in the early stages of the development of pure electric vehicles, lithium iron phosphate batteries were the main source of power.

Although lithium iron phosphate batteries have low costs, they also have obvious shortcomings. Due to differences in materials, the discharge effect of lithium iron phosphate batteries is greatly reduced under low temperature conditions. In other words, low temperatures will affect the storage capacity of lithium iron phosphate batteries, resulting in a reduction in driving range.

The ternary lithium battery is a lithium battery that uses nickel cobalt manganese oxide as the positive electrode material and graphite as the negative electrode material. The energy density of the ternary lithium battery is higher than that of the lithium phosphate battery, that is, under the condition of the same volume, the ternary lithium battery has a stronger power storage capacity than the lithium phosphate battery, which greatly increases the driving range.

At the same time, the ternary lithium battery has better discharge performance under low temperature conditions. According to statistics, the capacity of the ternary lithium battery can still reach 6.058Ah at minus 20 degrees, and the discharge platform reaches 3.411V. The capacity of the lithium iron phosphate battery is 4.32Ah at minus 20 degrees, and the discharge platform is 2.87V.

Summarize

It is not difficult to see from the above that the overall stability of lithium iron phosphate batteries is slightly worse than that of ternary lithium batteries, so it is not comprehensive to say that lithium iron phosphate batteries have a better prospect than ternary lithium batteries. However, due to the lower manufacturing cost, they can also be used as a power source for certain models. What do you think? Welcome to leave a message to discuss!