Loading patent…
AssigneesSinochem Lantian Co., Ltd., Zhejiang Zhonglan New Energy Materials Co., Ltd., Zhejiang Research Institute of Chemical Industry Co., Ltd.
InventorsJiangang Ren, Haibing Zhang, Xiaohong Ma, Guoqiang Ma, Haidao Liu, Qing Yang, Jingbo Dong, Huichuang Chen, Qi Zhang, Nan Sheng
Estimating the term…
Disclosed are a process and continuous system for producing LiPF6, and a prepared mixture crystal, composition, electrolyte solution and lithium ion battery containing LiPF6. During preparation, a first feed stream containing PF5 and a second feed stream containing LiF and HF are introduced into a first microchannel reactor, a gas part of a product in the first microchannel reactor is introduced into a second microchannel reactor to react with a third feed stream containing LiPF6, LiF and HF, and a liquid part of the product in the first microchannel reactor is subjected to crystallization and drying to obtain LiPF6. The LiPF6 has the advantages of a high purity, a uniform particle size, a high product quality stability, etc., and is suitable for use as a component of an electrolyte solution of a lithium ion battery.
A fluorine-containing electrolyte solution, comprising LiPF6, the LiPF6 used in the preparation of the fluorine-containing electrolyte solution is LiPF6 with 68% (wt) or more of the particle size greater than or equal to 0.2 mm and less than or equal to 0.3 mm, the water content of the LiPF6 is lower than 6 ppm, the purity of LiPF6 is above 99.99%, and the mass percentage of LiPF6 in the fluorine-containing electrolyte solution is 5-20 wt %.
Dependencies are inferred from the claim text.