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Pyridine sulfur trioxide complexes as electrolyte component for high voltage batteries

專利號
US11177505B2
公開日期
2021-11-16
申請人
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
技術領域
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

FIG. 2a): Cycling retention of LiNi0.5Mn1.5O4/Graphite cells (C/5, cutoff potentials at 25° C. and 45° C. 4.80 V?4.25 V vs. LiC6/C6) using the baseline electrolyte without (squares) or with 0.1 wt.-% 2-VP SO3 (circles).

FIG. 2b): Coulombic efficiency of LiNi0.5Mn1.5O4/Graphite cells (C/5, cutoff potentials at 25° C. and 45° C. 4.80 V?4.25 V vs. LiC6/C6) using the baseline electrolyte without (squares) or with 0.1 wt.-% 2-VP SO3 (circles).

FIG. 3a): Cycling retention of LiNi0.5Mn1.5O4/Graphite cells (C/5, cutoff potentials at 25° C. and 45° C. 4.80 V?4.25 V vs. LiC6/C6) using the baseline electrolyte without (squares) or with 0.1 wt.-% 3-FP SO3 (circles).

FIG. 3b): Coulombic efficiency of LiNi0.5Mn1.5O4/Graphite cells (C/5, cutoff potentials at 25° C. and 45° C. 4.80 V?4.25 V vs. LiC6/C6) using the baseline electrolyte without (squares) or with 0.1 wt.-% 3-FP SO3 (circles).

FIG. 4a): Cycling retention of LiNi0.5Mn1.5O4/Graphite cells (C/5, cutoff potentials at 25° C. and 45° C. 4.80 V?4.25 V vs. LiC6/C6) using the baseline electrolyte without (squares) or with 0.1 wt.-% 2-TFP SO3 (circles).

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