What is the development trend of lithium ion battery electrolyte?

The national battery requirements are to reach 300watt-hours/kg by 2020. Therefore, improving the energy density of the battery is the development trend of the battery in the future. The future development trend of the electrolyte is also to match the battery, improve energy density, safety and consistency.

The development of electrolyte application technology is based on the improvement of the energy density of the supporting battery and the improvement of the performance of the existing system. Therefore, according to the development trend of the battery in the future, a series of problems to be solved are listed, such as how to combine the electrolyte with high voltage and high energy density. With each company, there are different solutions. The current solution is the application of additives and the addition of some new solvents.

At present, some new lithium salts are studied, which is considered to be more reliable in terms of the existing lithium salt, but the conductivity is very high, and there is still some corrosion on the battery. In the past, the electrolyte was more satisfied with the demand of the 3C market. With the development of the power battery, the former electrolyte factory and the battery factory were not well integrated, and the packaging and transportation could not meet the needs of the existing battery, for example. Now the battery power density is relatively large, the energy density is relatively high, and the consistency is very high. It is far from the basic demand of 3C batteries. There is a contradiction in the middle. First, the electrolyte manufacturer needs some automation and intelligence higher equipment to ensure electrolyte consistency. The second is to meet the needs of the battery during transportation. In fact, sometimes the electrolyte is greatly affected by temperature. As an existing solvent, temperature, melting point and negative point are affected by temperature, so transportation to the manufacturer may have caused unevenness or poor consistency.

After all, the 3C market is a small batch, with a large number of batches. With the development of the new energy vehicle market, the demand for power batteries is very large. We need to stand higher, to meet new energy vehicles, and to look at the demand for electrolytes from the perspective of automobiles. There will be a new understanding of the electrolyte. Therefore, it is recommended that the industry integrate, the existing electrolyte plant and battery factory must be integrated together, in order to meet the demand for batteries of new energy vehicles.

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