Abstract: The present invention concerns methods for the manufacture of ethylene carbonate substituted with a fluorinated alkoxy group, certain ethylene carbonates substituted with a fluorinated alkoxy group as well as their use as solvent or solvent additive for lithium ion batteries and supercapacitors.

Abstract: Fluorinated carbonates comprising two oxygen bearing functional groups, methods for the preparation thereof, and their use as solvent or solvent additive for lithium ion batteries and supercapacitors are disclosed.

Abstract: Fluorinated carbonates comprising double-bond containing groups 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 alkenyl or at least one (hetero)aryl group.

Abstract: 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.

Abstract: The present invention concerns methods for the manufacture of ethylene carbonate substituted with a fluorinated alkoxy group, certain ethylene carbonates substituted with a fluorinated alkoxy group as well as their use as solvent or solvent additive for lithium ion batteries and supercapacitors.

Abstract: Fluoroalkyl alkyl carbonates which are suitable as additives or solvents in lithium ion batteries are prepared from fluoroalkyl fluoroformiates and an aldehyde, preferably formaldehyde and acetaldehyde. 1,1?-difluoromethyl carbonate and 1,1?-di-fluorodiethylcarbonate are the preferred compounds prepared by the process of the present invention.

Abstract: Fluorinated carbonates comprising two oxygen bearing functional groups, methods for the preparation thereof, and their use as solvent or solvent additive for lithium ion batteries and supercapacitors are disclosed.

Abstract: Fluorinated carbonates comprising double-bond containing groups 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 alkenyl or at least one (hetero)aryl group.

Abstract: The present invention relates to an electrolyte solution comprising an electrolyte salt and an electrolyte solvent, wherein the electrolyte solvent comprises a fluorinated acyclic dialkyl carbonate, preferably an n-fluoro diethyl carbonate according to formula (1) as follows: C2H5-xFx—CO3C2H5-yFy (1) wherein 1?x?5 and 0?y?5; in an amount in the range of ?10 wt % to ?100 wt %, referring to a total amount of the electrolyte solvent of 100 wt %, and the use of such fluorinated acyclic dialkyl carbonates for the prevention or suppresion of aluminum current collector corrosion in an alkali or alkaline earth metal-based electrochemical energy storage device, particularly in a lithium-ion battery or lithium polymer battery containing an electrolyte solution comprising an alkali or alkaline earth metal sulfonimide or sulfonmethide salt.

Abstract: 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.

Abstract: Fluoroalkyl alkyl carbonates and fluorosubstituted carbamates which are suitable as additives or solvents in lithium ion batteries are prepared from fluoroalkyl fluoroformates and the respective alcohol or amine. Methanol is the preferred alcohol, dimethylamine and diethylamine are preferred amines. Fluoromethyl methyl carbonate is the preferred compound to be produced. Fluoroalkyl fluoroformates can be prepared from aldehydes and carbonyl fluoride.

Abstract: Fluoroalkyl alkyl carbonates and fluorosubstituted carbamates which are suitable as additives or solvents in lithium ion batteries are prepared from fluoroalkyl fluoroformates and the respective alcohol or amine. Methanol is the preferred alcohol, dimethylamine and diethylamine are preferred amines. Fluoromethyl methyl carbonate is the preferred compound to be produced. Fluoroalkyl fluoroformates can be prepared from aldehydes and carbonyl fluoride.

Abstract: Fluoroalkyl alkyl carbonates which are suitable as additives or solvents in lithium ion batteries are prepared from fluoroalkyl fluoroformiates and an aldehyde, preferably formaldehyde and acetaldehyde. 1,1?-difluoromethyl carbonate and 1,1?-di-fluorodiethylcarbonate are the preferred compounds prepared by the process of the present invention.

Abstract: A lithium-air battery cell with an electrolyte composition comprising LiPO2F2 is described. The electrolyte composition comprises an electrolyte solvent, for example, one or more non-fluorinated solvents, e.g. ethylene carbonate, a dialkyl carbonate or propylene carbonate, and/or one or more fluorinated organic solvents, e.g. fluoroethylene carbonate, cis-difluoroethylene carbonate, trans-difluoroethylene carbonate, 4,4-di-fluoroethylene 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-tri-fluoroethyl-methyl carbonate, 2,2,2-trifluoroethyl-fluoromethyl carbonate are preferred. The solvent may further comprise other additives. Also described is a vehicle battery, especially a car battery constituted of a multitude of lithium-air battery cells of the invention. The battery can be used to provide electrical energy to consumers for electric current including an electric motor driving the vehicle.

Abstract: Difluoroethylene carbonate, trifluoroethylene and tetrafluoroethylene carbonate are produced by the reaction between elemental fluorine and ethylene carbonate or fluorinated ethylene carbonates with a lower degree of fluorination.

Abstract: 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.

Abstract: Difluoroethylene carbonate, trifluoroethylene carbonate and tetrafluoroethylene carbonate are synthesized from dichloroethylene carbonate, trichloroethylene carbonate and tetrachloroethylene carbonate with fluorinating agents, e.g. alkali metal fluorides, antimony fluorides and especially the HF adducts of amines The fluorinated carbonates are suitable as additives in lithium ion batteries.

Abstract: A method for handling fluorinated organic carbonates such that degradation reactions are minimized or even completely suppressed and hence initial purity of fluorinated organic carbonates is essentially maintained during handling. Compositions comprising a fluorinated organic carbonate with improved stability against degradation reactions. The compositions comprise equal to or less than 500 ppm of a Lewis acid.

Abstract: Fluoroalkyl alkyl carbonates and fluorosubstituted carbamates which are suitable as additives or solvents in lithium ion batteries are prepared from fluoroalkyl fluoroformates and the respective alcohol or amine. Methanol is the preferred alcohol, dimethylamine and diethylamine are preferred amines. Fluoromethyl methyl carbonate is the preferred compound to be produced. Fluoroalkyl fluoroformates can be prepared from aldehydes and carbonyl fluoride.

Abstract: The present invention concerns 4-fluoro-4-R-5-R?-1,3-dioxolane-2-ones, wherein R is an alkyl group and R? is H or a C1 to C3 alkyl group, their manufacture, solvent mixtures for lithium ion batteries containing them and conductive salt solutions for lithium ion batteries, e.g. solutions containing LiPF6.