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Pyridine sulfur trioxide complexes as electrolyte component for high voltage batteries

專利號(hào)
US11177505B2
公開日期
2021-11-16
申請(qǐng)人
BASF SE; University of Rhode Island Board of Trustees(DE Ludwigshafen am Rhein)
發(fā)明人
Frederick Francois Chesneau; Arnd Garsuch; Michael Schmidt; Brett Lucht; Julien Demeaux; Yingnan Dong; Bo Zhang
IPC分類
H01M10/0567; H01M10/0525; H01M10/0568; H01M10/0569
技術(shù)領(lǐng)域
so3,lithium,pyridine,c10,carbonate,alkyl,cyclic,or,selected,wt
地域: Ludwigshafen am Rhein

摘要

An electrolyte composition including (i) at least one aprotic organic solvent; (ii) at least one conducting salt; (iii) at least one pyridine-SO3 complex of formula (I) wherein R is selected independently at each occurrence from F, C1 to C10 alkyl, C2 to C10 alkenyl, and C2 to C10 alkynyl, wherein alkyl, alkenyl, and alkynyl may be substituted by one or more substituents selected from F and CN; and n is an integer selected from 1, 2, 3, 4, and 5; and (vi) optionally one or more additives; and its use in electrochemical cells.

說明書

Examples of cyclophosphazenes are ethoxypentafluorocyclotriphosphazene, available under the trademark Phoslyte? E from Nippon Chemical Industrial, hexamethylcyclotriphosphazene, and hexamethoxycyclotriphosphazene, preferred is ethoxypentafluorocyclotriphosphazene. An example of an organic phosphoramide is hexamethyl phosphoramide. An example of an organic phosphite is tris(2,2,2-trifluoroethyl) phosphite. Examples of organic phosphates are trimethyl phosphate, trimethyl phosphate, tris(2,2,2-trifluoroethyl)phosphate, bis(2,2,2-trifluoroethyl)methyl phosphate, and triphenyl phosphate Examples of organic phosphonates are dimethyl phosphonate, ethyl methyl phosphonate, methyl n-propyl phosphonate, n-butyl methyl phosphonate, diethyl phosphonate, ethyl n-propyl phosphonate, ethyl n-butyl phosphonate, di-n-propyl phosphonate, n-butyl n-propyl phosphonate, di-n-butyl phosphonate, and bis(2,2,2-trifluoroethyl) methyl phosphonate. An example of an organic phosphine is triphenyl phosphine. Examples of organic phosphinates are dimethyl phosphonate, diethyl phosphinate, di-n-propyl phosphinate, trimethyl phosphinate, trimethyl phosphinate, and tri-n-propyl phosphinate.

Examples of HF and/or H2O scavenger are optionally halogenated cyclic and acyclic silylamines.

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