Lithium batteries are a class of batteries with lithium metal or lithium alloy as the anode material, using a non-aqueous electrolyte solution. Ternary lithium ion batteries, lithium manganate ion batteries, lithium iron phosphate batteries are common lithium ion batteries, what is the difference between them?
1、 Ternary material lithium-ion battery
We often say ternary lithium-ion battery is ternary polymer lithium-ion battery, it refers to the use of lithium nickel cobalt manganese oxide or lithium nickel cobalt aluminate cathode material ternary cathode material lithium-ion battery. The lithium ion battery with ternary material has higher capacity, better cycle life, and good multiplier discharge.
The disadvantages are the following: the price is the most expensive of the three materials, safety performance is no advantage. Currently lithium-ion battery explosion cases using ternary material lithium-ion batteries are mostly.
2、LiFePO4 lithium-ion batteries
LiFePO4 lithium-ion batteries refers to lithium iron phosphate as the cathode material of lithium-ion batteries. Its safety performance is better, high cycle life (about 1500 times), high temperature performance.
Lithium iron phosphate batteries are generally considered to be green batteries that do not contain any heavy metals and rare metals, and are non-toxic and non-polluting. The reason why lithium iron phosphate batteries are favored by the industry is important for environmental considerations.
Of course, lithium iron phosphate also has its shortcomings: for example, the price is not cheap, low-temperature performance is poor, in addition to the same volume under the weight of the capacity of small shortcomings.
3、Lithium manganate ion battery
As the name suggests, Li-ion manganate batteries use lithium manganate as the cathode material, and lithium manganate is one of the more promising lithium-ion cathode materials. Lithium manganate batteries are widely used for their advantages of low cost, no pollution, higher safety and good multiplication performance. In addition, lithium manganate has good low temperature performance, and can achieve more than 90% efficiency when discharged at a low temperature of minus 20 degrees below zero.
The disadvantages of LiMn2O4 are poor high temperature performance, easy to bulge; low cycle life is relatively short (general normal service life is about 300 to 400 times); the material itself is not very stable, easy to decompose gas, so it is mostly used for mixing with other materials to reduce the cost of electric core. Its poor cycling performance and electrochemical stability has greatly limited its industrialization.
Summarize the comparison:
Three materials of lithium-ion battery in terms of safety, lithium iron phosphate, lithium manganate safety is better. In terms of capacity, lithium ternary and lithium manganate are better. Lithium iron phosphate batteries have the longest cycle life, while lithium manganate batteries have obvious advantages in production cost and applicable temperature.
