Advantages and disadvantages of lithium iron phosphate / lithium cobaltate / lithium manganate / ternary material lithium batteries



Lithium batteries are a class of batteries with lithium metal or lithium alloy as the anode material and using non-aqueous electrolyte solution. Lithium-ion batteries use carbon material as the negative electrode and lithium-containing compounds as the positive electrode. According to the different cathode compounds, common lithium-ion batteries include lithium cobaltate, lithium manganate, lithium iron phosphate, and lithium ternary.

1, lithium cobaltate battery

Advantages: Lithium cobalt has the advantages of high discharge platform, high specific capacity, good cycling performance and simple synthesis process.

Disadvantages: lithium cobalt material contains cobalt toxicity, and the price is high, making large power battery safety is difficult to guarantee.

2, lithium iron phosphate battery

Advantages: lithium iron phosphate does not contain harmful elements, low cost, very good safety, cycle life up to 10000 times.

Disadvantages: the energy density of lithium iron phosphate batteries is lower than lithium cobalt and ternary batteries.

3, ternary material lithium battery

Advantages: ternary materials in the specific energy, cycle, safety and cost can be balanced and regulated.

Disadvantages: ternary material thermal stability is worse. For example, NCM11 material decomposes at about 300℃, while NCM811 decomposes at about 220℃.

4、Lithium manganate battery

Advantages: low cost, good safety and low temperature performance of LiMn2O4.

Disadvantages: Lithium manganate material itself is not very stable, easy to decompose and produce gas.

5、Lithium Nickel Acid Battery

Advantages: Lithium nickelate has the advantages of high specific capacity, low pollution, moderate price and good matching with electrolyte.

Disadvantages: the synthesis of lithium nickelate is difficult, poor cycle stability.

The weight of lithium-ion batteries is the same capacity of nickel-cadmium or nickel-metal hydride batteries half; a lithium-ion battery single working voltage of 3.7V, equivalent to three series-connected nickel-cadmium or nickel-metal hydride batteries; lithium-ion batteries do not contain lithium metal, is not subject to the provisions of the ban on the transportation of lithium batteries on board the passenger aircraft and other restrictions.