Improvement of electrolytes of lithium ion batteries.lifepo4 solar battery Processing

　　The improvement of lithium ion battery electrolyte is mainly to improve its circulation performance by changing the conductive salt and using electrolyte additives.

　　The important reason for the dissolution of the battery positive material is that due to the existence of HF in the electrolyte, reducing the generation of HF can reduce the dissolution of the positive pole material. By using libob lithium salt, it can avoid the generation of HF and reduce the dissolution of metal iron, thereby improving the high temperature cycle performance of lithium iron phosphate batteries. The LIC104 conductive salt and Libf4 and libob -mixed conductive salt were used to improve the high temperature cycle performance of lithium iron phosphate batteries. In addition, it can be used to reduce the production of HF.

　　In addition to preventing the dissolving of the positive metal ions, it is also necessary to reduce the deposits of metal ions on the surface of the graphite in the electrolyte. There are more research on the method of additives, and additives to inhibit metal ions with two ways to deposit on the surface of the graphite. One is to form a dense passivation film on the negative surface, which hinders the touch of metal ions and graphite electrodes, thereby reducing The sedimentation of metal ions; the other is to inhibit the deposits of metal ions by constraining metal ions in the electrolyte.

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