-Analyzing the Technology and Development Trends of Lithium ion Battery Electrolytes

Analyzing the Technology and Development Trends of Lithium ion Battery Electrolytes
author:enerbyte source:本站 click130 Release date: 2024-01-05 09:52:10
abstract:
1. High specific energy type electrolyteThe pursuit of high specific energy is currently the biggest research direction for lithium-ion batteries, especially as mobile devices occupy an increasing proportion in people's lives, battery life has become the most critical performance.2. High power e...

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1. High specific energy type electrolyte

The pursuit of high specific energy is currently the biggest research direction for lithium-ion batteries, especially as mobile devices occupy an increasing proportion in people's lives, battery life has become the most critical performance.

2. High power electrolyte

At present, it is difficult for commercialized lithium-ion batteries to achieve high rate continuous discharge. The main reason is that the battery ears generate severe heat, and internal resistance causes the overall temperature of the battery to be too high, which can easily lead to thermal runaway. Therefore, the electrolyte should be able to suppress the rapid heating of the battery while maintaining high conductivity. As for power lithium batteries, achieving fast charging is also an important direction for the development of electrolytes.

3. Wide temperature electrolyte

Batteries are prone to electrolyte self decomposition and intensified side reactions between materials and electrolyte components at high temperatures; At low temperatures, electrolyte salt may precipitate and negative electrode SEI membrane impedance may increase exponentially. The so-called wide temperature electrolyte is to provide a wider working environment for batteries.

4. Safety electrolyte

The safety of batteries is important in terms of combustion and even explosion. Firstly, batteries themselves have combustibility. Therefore, when the battery is overcharged, over discharged, short circuited, or subjected to external puncture or compression, or when the external temperature is too high, it may cause safety accidents. Therefore, flame retardancy is an important direction in the research of safe electrolytes.

5. Long cycle electrolyte

Due to the significant technical difficulties in the recycling of lithium-ion batteries, especially power lithium batteries, improving the lifespan of batteries is one way to alleviate this situation.

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