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US 8,940,434 B2Granted
Electrolyte additive and electrolyte and lithium rechargeable battery including same
AssigneeSamsung SDI Co., Ltd.
InventorsMakhmut Khasanov, Woo-Cheol Shin, Denis Chernyshov, Alexey Tereshchenko, Vladimir Egorov, Pavel Shatunov
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Abstract
Disclosed are an additive for a rechargeable lithium battery electrolyte including an aromatic compound having an isothiocyanate group (—NCS), and an electrolyte and rechargeable lithium battery including the same.
Claims16
An additive for a rechargeable lithium battery electrolyte, comprising an aromatic compound having an isothiocyanate group (—NCS);
- wherein the aromatic compound is selected from phenyl isothiocyanate, 4-nitrophenyl isothiocyanate, trifluoromethyl phenyl isothiocyanate, 4-cyanophenyl isothiocyanate, 4-methoxyphenyl isothiocyanate, 4-fluorophenyl isothiocyanate, 4-methylphenyl isothiocyanate, 2-fluoro-5-(trifluoromethyl)phenyl isothiocyanate, 4-methyl-3-(trifluoromethyl)phenyl isothiocyanate, 4-fluoro-3-(trifluoromethyl)phenyl isothiocyanate, 3,5-bis(trifluoromethyl)phenyl isothiocyanate, and 1,4-phenylene diisothiocyanate.
An electrolyte for a rechargeable lithium battery, comprising:
- a non-aqueous organic solvent,
- a lithium salt, and
- an aromatic compound having an isothiocyanate group (—NCS);
- wherein the aromatic compound is selected from phenyl isothiocyanate, 4-nitrophenyl isothiocyanate, trifluoromethyl phenyl isothiocyanate, 4-cyanophenyl isothiocyanate, 4-methoxyphenyl isothiocyanate, 4-fluorophenyl isothiocyanate, 4-methylphenyl isothiocyanate, 2-fluoro-5-(trifluoromethyl)phenyl isothiocyanate, 4-methyl-3-(trifluoromethyl)phenyl isothiocyanate, 4-fluoro-3-(trifluoromethyl)phenyl isothiocyanate, 3,5-bis(trifluoromethyl)phenyl isothiocyanate, and 1,4-phenylene diisothiocyanate.
1 more element
A rechargeable lithium battery, comprising:
- a positive electrode,
- a negative electrode, and
- an electrolyte comprising:
- a non-aqueous organic solvent,
- a lithium salt, and
- an aromatic compound having an isothiocyanate group (—NCS);
- wherein the aromatic compound is selected from phenyl isothiocyanate, 4-nitrophenyl isothiocyanate, trifluoromethyl phenyl isothiocyanate, 4-cyanophenyl isothiocyanate, 4-methoxyphenyl isothiocyanate, 4-fluorophenyl isothiocyanate, 4-methylphenyl isothiocyanate, 2-fluoro-5-(trifluoromethyl)phenyl isothiocyanate, 4-methyl-3-(trifluoromethyl)phenyl isothiocyanate, 4-fluoro-3-(trifluoromethyl)phenyl isothiocyanate, 3,5-bis(trifluoromethyl)phenyl isothiocyanate, and 1,4-phenylene diisothiocyanate.
4 more elements
Dependencies are inferred from the claim text.