409071-16-5Relevant articles and documents
Characterisation and properties of new ionic liquids with the difluoromono[1,2-oxalato(2-)-O,O′]borate anion
Herzig, Tobias,Schreiner, Christian,Gerhard, Dirk,Wasserscheid, Peter,Gores, Heiner Jakob
, p. 612 - 618 (2007)
Three ionic liquids with borate anions of low symmetry, tetraethylammonium difluoromono[1,2-oxalato(2-)-O,O′]borate, 1-ethyl-3-methylimidazolium difluoromono[1,2-oxalato(2-)-O,O′]borate, and 1-butyl-3-methylimidazolium difluoromono[1,2-oxalato(2-)-O,O′]borate were synthesised and characterised by physicochemical and electrochemical measurements including thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), cyclic voltammetry (CV), viscosity and conductivity measurements.
Preparation method of lithium difluorooxalate borate
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Paragraph 0031-0033, (2020/12/09)
The invention discloses a preparation method of lithium difluorooxalate borate. The preparation method comprises the following steps: (1) placing anhydrous oxalic acid and anhydrous lithium chloride in a reaction vessel, adding an aprotic polar solvent to the reaction vessel under a nitrogen atmosphere, conducting reaction at 10-80 DEG C under a stirring condition for 1-12 h; reacting anhydrous oxalic acid with anhydrous lithium chloride to produce lithium hydrogen oxalate; (2) adding a boron trifluoride compound to the reaction vessel, continuing reaction for 1-12 h to produce lithium difluorooxalate borate; and (3) filtering a reaction solution after the reaction in step (2) at room temperature to remove solid raw materials which not completely react, and then concentrating and recrystallizing a filtrate obtained after filtration, then performing washing and filtration with a non-polar solvent, and finally, carrying out drying to obtain a solid lithium difluorooxalate borate product.The method is mild in reaction, simple in process, low in production cost, economical and environmentally friendly, can obtain high-purity lithium difluorooxalate borate, and is more suitable for industrial production.
Preparation method and purification method of compound comprising at least one cyclic ligand structure
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Paragraph 0206-0209, (2019/03/29)
The invention discloses a preparation method and a purification method of a compound comprising at least one cyclic ligand structure. The compound comprising the at least one cyclic ligand structure comprises 1-2 cyclic ligands in different structures, namely a cyclic ligand containing La and/or a cyclic ligand containing Lb, wherein the cyclic ligand containing La comprises one of sulfuryl (-SO2-), sulfinyl (-SO-) and carbonyl. The compound can serve as electrolyte lithium salt of a lithium ion battery independently, and is dissolved in an organic solvent for preparing an electrolyte solutionof the lithium ion battery; or, the compound and the lithium salt are dissolved in the organic solvent to prepare the electrolyte solution of the lithium ion battery; and the electrolyte solution canobviously improve internal resistance of the lithium ion battery and has an effect on cycle performance of the battery.