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Why Lithium Ion Battery Deliberate Explaination

Shenzhen Sinoli Electronic Co.,Ltd | Updated: Sep 16, 2018

The reasons to Choose Lithium ion battery 


History of Lithium ion battery:

Lithium ion battery is much younger than lithium metal battery. It adopts lithium metal oxide as anode, which was born in 1970s. However, in the 1990s, with the rapid development of electronic products, the demand for high-power and high-energy density battery increased, so lithium ion battery began to become the mainstream.


High energy desity of Lithium ion battery:

The main structure of the li-ion battery includes positive, negative, electrolyte, diaphragm and some other accessories. The positive electrode material is the focus of the research. Both lithium ternary and lithium iron phosphate describe the positive electrode material of lithium ion battery. Currently, the negative electrode materials are mainly graphite, with high crystallinity, good conductivity and large capacity of lithium ions, reaching 372mAh/g, which greatly exceeds the capacity of the positive electrode materials.


Lithium ion battery electrolyte different:

Unlike conventional batteries (lead-acid batteries, nickel-cadmium batteries, etc. Lithium batteries have a voltage of about 3-4v. Common electrolyte materials are inorganic anionic lithium salts, LiBF4, LiPF6 and LiAsF6. The solvent is ester, ether and sa.


The charging and discharging process of lithium battery is:

Where, Y is excess metal, Y is cobalt (Co) in LiCoO2 battery, and manganese (Mn) in the lithium manganese acid battery. For a ternary lithium battery, it is NiCoMn in Li (NiCoMn) O2, and for a LiFePO4 battery, it is FePO4.


For li-ion batteries, the development of anode materials is the key technology. Theoretically, according to the above reaction formula, any substance that can detach lithium ions can be used as a positive electrode material, but in fact, this is not easy. For performance, it needs to have good conductivity, large discharge rate and good compatibility with electrolyte. For life, it needs high reversibility and weak polarization effect, and for safety, it needs good stability and gentle electrode process dynamics.


lithium ion battery development and application about 30 years so far. it has been used in many applications even the key element of EUV. related standard and regulations already accomplished and released NCM lithium ion battery application in new energy cars.