Lithium Difluorophosphate synthesis

Yield:-

Reaction Conditions:

at 65; for 12 h;Inert atmosphere;Glovebox;Temperature;

Steps:

All chemicals were purchased from Jinniu Power Sources Co., Ltd. (Tianjin,China). LiPO2F2is prepared via the reaction of the LiPF6 with the Li2CO3 in dimethylcarbonate (DMC) solvent (Reaction 1). Firstly, 0.5 mol LiPF6was dissolved into 100mL DMC (LiPF6/DMC = 20.0 wt%) in a 250 mL Teflon reaction vessel at 0 insidea nitrogen-filled glove box. Next, a certain amount of Li2CO3 was slowly added intothe solution with continuous stirring. The reaction vessel was heated to differenttemperatures (25, 45, 65 ) for 12 h. It should be noted that there are bubblesgenerated during the reaction process.LiPF6 + 2Li2CO3 LiPO2F2 + 4LiF (s) + 2CO2 (g)Reaction 1After the reaction, the salt solution was collected via vacuum filtration to removethe insoluble LiF.

References:

Zhao, Weimin;Ren, Fucheng;Yan, Qizhang;Liu, Haodong;Yang, Yong [Chinese Chemical Letters,2020,vol. 31,# 12,p. 3209 - 3212] Location in patent:supporting information