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US 10,833,368 B2Granted
Electrolyte for electrochemical generator
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsLionel Picard, Gerard Gebel, Melody Leclere, Hakima Mendil, Patrice Rannou
Life of this patent
Estimating the term…
Abstract
Thermotropic ionic liquid crystal molecules, comprising a so-called rigid part, a so-called flexible part bonded covalently, directly or via a spacer, to said rigid part, and one or more ionic groups bonded covalently to said rigid part. Said molecules can be used as electrolytes in an electrochemical device, in particular a lithium-ion battery.
Claims25
An electrolyte, comprising a thermotropic ionic liquid crystal molecule, in a mesomorphic state,
- wherein the molecule comprises:
- a rigid part, comprising a polycyclic group Ar formed from 2 to 6 rings, at least one of which is aromatic, the rings being, independently of each other, 4- to 6-membered, the polycyclic group optionally including up to 18 heteroatoms;
- a flexible part, formed from one or more linear or branched, saturated or unsaturated, fluorinated or nonfluorinated aliphatic chains, the chain(s) being optionally interrupted with one or more heteroatoms, metalloids, and/or aromatic or nonaromatic, 4- to 6-membered (hetero)cycles, and optionally substituted with one or more hydroxyl, —NH2, and/or oxo groups, the flexible part being covalently bonded, directly or via a spacer, to the rigid part;
- and
- an ionic group -Ax−Cx+,
- wherein -Ax− is an anionic group covalently bonded to the rigid part, with x being an integer equal to 1 or 2, -Ax− being a sulfonate anion, sulfonylimide of formula —SO2—N−—SO2CyF2y+1 with y being an integer ranging from 0 to 4, borate, borane, phosphate, phosphinate, phosphonate, silicate, carbonate, sulfide, selenate, nitrate, and/or perchlorate, and
- wherein Cx+ is a counter-cation of -Ax−, and Cx+ is H+, an alkali metal cation, and/or an alkaline-earth metal cation.
4 more elements
Dependencies are inferred from the claim text.