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What materials will affect the high voltage performance of lithium batteries?

2022-12-29 15:35:02
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Lithium battery production


Electrolyte is generally composed of lithium electrolyte salt and high purity organic solvent, which is the carrier of lithium ion migration and charge transfer.




From the point of view of function, electrolyte is the key material that affects the high voltage and high specific energy performance of lithium battery. In recent years, with the increasing market demand of lithium battery in new energy vehicles and energy storage, the output of electrolyte of our country is increasing. But at the same time, the continuous development and iteration of the new technology and process of lithium battery also put forward higher requirements for the upgrading applicability of electrolyte in the aspects of high nickel, high pressure, high specific energy and high safety.





For example, high nickel cathode material has become the mainstream technology route of the current high energy density lithium battery. With the increasing proportion of nickel and the use of silicon carbon anode, the development and production of electrolyte has brought new challenges.




At the same time, to alleviate range anxiety, lithium-ion batteries are increasing their energy density, and thus their voltage. The higher the voltage is, the stronger the decomposition ability of the electrolyte will be, which may adversely affect the performance and safety of the lithium battery.




In addition, the storage performance, cycling performance and safety performance of lithium battery under high temperature, fast charging and other environments are closely related to the performance of the electrolyte.




The above industry pain points are more complex to solve, and the technical threshold is high. In the face of the development trend of new technology, it is necessary to tackle the key issues related to electrolyte in order to meet the new requirements of new material system for electrolyte.




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