Title:
SYNTHESIS METHOD FOR AMMONIUM DIFLUOROPHOSPHATE
Document Type and Number:
WIPO Patent Application WO/2024/082463
Kind Code:
A1
Abstract:
A synthesis method for ammonium difluorophosphate, relating to the technical field of preparation of lithium battery additives. The synthesis method for ammonium difluorophosphate comprises the following steps: 1) dehydrating ammonium fluoride salt to obtain anhydrous ammonium fluoride salt; 2) performing ball milling on the anhydrous ammonium fluoride salt to obtain activated ammonium fluoride salt; and 3) controlling the temperature in a reaction kettle to be 0-5°C, putting the activated ammonium fluoride salt, anhydrous phosphorus pentoxide, and an anhydrous solvent into the reaction kettle, adding a catalyst, introducing an inert gas into the reaction kettle, heating to 60-90°C, and reacting to obtain ammonium difluorophosphate. A product prepared by the synthesis method for ammonium difluorophosphate has high purity, high yield, and stable reaction.
Inventors:
JIA GUOWEN (CN)
ZHU ZHENTAO (CN)
YU XIN (CN)
GENG QICHEN (CN)
LI CHAO (CN)
ZHU ZHENTAO (CN)
YU XIN (CN)
GENG QICHEN (CN)
LI CHAO (CN)
Application Number:
PCT/CN2023/071169
Publication Date:
April 25, 2024
Filing Date:
January 09, 2023
Export Citation:
Assignee:
HAIKE GROUP RESEARCH INSTITUTE OF INNOVATION & TECH (CN)
International Classes:
C01B25/455; H01M10/052; H01M10/0567
Foreign References:
| CN115340081A | 2022-11-15 | |||
| CN115152070A | 2022-10-04 | |||
| KR101925051B1 | 2019-02-22 | |||
| CN102036912A | 2011-04-27 | |||
| JP2015044701A | 2015-03-12 | |||
| DE813848C | 1951-09-17 |
Attorney, Agent or Firm:
QINGDAO LAWSCI INTELLECTUAL PROPERTY CO., LTD. (CN)
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