PRODUCTION OF LITHIUM TETRAFLUOROBORATE

摘要

PROBLEM TO BE SOLVED: To produce lithium tetrafluoroborate useful as an electrolyte for a lithium cell. SOLUTION: Lithium fluoride is allowed to react with boron trifluoride in a chain carbonic ester to form lithium tetrafluoroborate, which is then obtd. by deposition and separation. The lithium tetrafluoroborate is used as an electrolyte for a lithium cell as it is. A cyclic carbonic ester is added to the reaction liq. and the chain carbonic ester is distilled off to obtain an electrolytic soln. for a lithium cell.