[EN] FLUORINATED DERIVATIVES OF MELDRUM'S ACID, A METHOD FOR THE PREPARATION OF THE SAME, AND THEIR USE AS A SOLVENT ADDITIVE<br/>[FR] DÉRIVÉS FLUORÉS D'ACIDE DE MELDRUM, LEUR PROCÉDÉ DE PRÉPARATION ET LEUR UTILISATION COMME ADDITIF DE SOLVANT
申请人:SOLVAY
公开号:WO2013079397A1
公开(公告)日:2013-06-06
Disclosed are certain fluorinated derivatives of Meldrum's acid as novel compounds, preparation methods for the same, their use in Li ion batteries, Li air batteries and Li sulphur batteries as well as solvent compositions, electrolyte compositions and respective batteries containing them.
A lithium sulfur battery comprising an electrolyte solvent which comprises at least one fluorosubstituted compound is described. Preferred fluorosubstituted compounds which are predominantly solvents are notably selected from the group consisting of fluorosubstituted carboxylic acid esters, fluorosubstituted carboxylic acid amides, fluorosubstituted fluorinated ethers, fluorosubstituted carbamates, fluorosubstituted cyclic carbonates, fluorosubstituted acyclic carbonates, fluorosubstituted ethers, perfluoroalkyl phosphoranes, fluorosubstituted phosphites, fluorosubstituted phosphates, fluorosubstituted phosphonates, and fluorosubstituted heterocycles. Monofluoroethylene carbonate, cis-difluoroethylene carbonate, trans-difluoroethylene carbonate, 4,4-difluoroethylene carbonate, trifluoroethylene carbonate, tetrafluoroethylene carbonate, 4-fluoro-4-methyl-1,3-dioxolane-2-one, 4-fluoro-4-ethyl-1,3-dioxolane-2-one, 2,2,2-trifluoroethyl-methyl carbonate, 2,2,2-trifluoroethyl-fluoromethyl carbonate are preferred. The solvent may further comprise a non-fluorinated solvent, e.g., ethylene carbonate, a dialkyl carbonate, or propylene carbonate. Use of such fluorinated compound as additive for such batteries and specific electrolyte solutions.
FLUORINATED CARBONYL COMPOUNDS COMPRISING A TRIPLE BOND, METHODS FOR THEIR MANUFACTURE AND USES THEREOF
申请人:SOLVAY SA
公开号:US20150191423A1
公开(公告)日:2015-07-09
Fluorinated carbonyl compounds comprising a triple bond were prepared and their use as solvent additives or solvents in lithium ion batteries, lithium air batteries, lithium sulphur batteries and supercapacitors is described. Preferred compounds contain at least one nitrile or at least one alkynyl group.
Process for the manufacture of 1, 1'-difluorosubstituted dialkyl carbonates, isomers thereof and electrolyte compositions containing them
申请人:SOLVAY SA
公开号:EP2602241A1
公开(公告)日:2013-06-12
Fluoroalkyl alkyl carbonates which are suitable as additives or solvents in lithium ion batteries are prepared from fluoroalkyl fluoroformates and an aldehyde, preferably formaldehyde and acetaldehyde. 1,1'-difluoromethyl carbonate and 1,1'-difluorodiethylcarbonate are the preferred compounds prepared by the process of the present invention.