1、High-energy electrolyte

The pursuit of high specific energy is the biggest research direction of lithium-ion battery, especially when mobile devices occupy more and more weight in people’s life, the range, become the most critical performance of the battery.

2、High power type electrolyte

At present, the commercial lithium-ion battery is difficult to achieve a high rate of sustained discharge, the important reason is that the battery pole ear heating serious, internal resistance led to the overall temperature of the battery is too high, prone to thermal runaway. Therefore, to electrolyte can inhibit the battery from heating up too fast while maintaining a high conductivity. And about power lithium batteries, to achieve fast charging is also an important direction of electrolyte development.

3、Wide temperature electrolyte

The battery is prone to the decomposition of electrolyte itself and the intensification of the side reaction between the material and electrolyte parts at high temperature; while at low temperature there may be electrolyte salt precipitation and multiplication of negative SEI film impedance. The so-called wide temperature electrolyte is to make the battery have a broader working environment.

4、Safety electrolyte

The safety of the battery is important in the combustion and even explosion. First of all, the battery itself is flammable, so when the battery is overcharged, overdischarged or short-circuited, when it receives external pinprick or extrusion, and when the external temperature is too high, it may cause safety accidents. Therefore, flame retardant is an important direction for safety electrolyte research.

5、Long cycle type electrolyte

Since there are still major technical difficulties in the recycling of lithium-ion batteries, especially in the recycling of power lithium batteries, improving the battery life is one way to alleviate this situation. There are two important research ideas for long cycle type electrolyte, one is the stability of electrolyte, including thermal stability, chemical stability, voltage stability; the second is the stability with other materials, requiring stable film formation with electrodes, no oxidation with diaphragm, and no corrosion with collector fluid.