Title:
LITHIUM DIFLUORO-BIS(OXALATE)PHOSPHATE, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2022/253007
Kind Code:
A1
Abstract:
Disclosed are lithium difluoro-bis(oxalate)phosphate, a preparation method therefor, and an application thereof. The preparation method comprises the following steps: (1) mixing oxalyl chloride and lithium hexafluorophosphate with a non-aqueous solvent, adding siloxane, and reacting to obtain a lithium difluoro-bis(oxalate)phosphate solution; and (2) adding a poor solvent into the lithium difluoro-bis(oxalate)phosphate solution for crystallization treatment to obtain the lithium difluoro-bis(oxalate)phosphate. According to the present application, raw materials such as lithium hexafluorophosphate, oxalyl chloride, and hexamethyldisiloxane are used for preparing the difluoro-bis (oxalate)phosphate, and the method of the present application is few in side reaction, few in impurities, high in product purity, and suitable for industrial production.
Inventors:
YUE MIN (CN)
YU YI (CN)
YU YI (CN)
Application Number:
PCT/CN2022/094100
Publication Date:
December 08, 2022
Filing Date:
May 20, 2022
Export Citation:
Assignee:
SHENZHEN YANYI NEW MAT CO LTD (CN)
International Classes:
C07F9/6574; H01M10/0567
Foreign References:
| CN113336793A | 2021-09-03 | |||
| CN110845539A | 2020-02-28 | |||
| CN111004286A | 2020-04-14 | |||
| CN111116349A | 2020-05-08 | |||
| CN109485671A | 2019-03-19 |
Other References:
SHEN, FANGLIE ET AL.: "A Review of Synthetic Routes of Lithium Difluorobis (oxalato) phosphate", ZHEJIANG CHEMICAL INDUSTRY, vol. 51, no. 8, 15 August 2020 (2020-08-15), pages 4 - 6, XP093010947, ISSN: 1006-4184
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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