Electrolyte for lithium battery and lithium battery comprising same
Patent 7438993 Issued on October 21, 2008. Estimated Expiration Date: 
November 1, 2025. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 1, 2025. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesNon-aqueous electrolyte secondary battery Polymerizable aromatic additives for overcharge protection in non-aqueous rechargeable lithium batteries Patent #: 5879834 InventorsAssigneeApplicationNo. 11265779 filed on 11/01/2005US Classes:429/327, One of the organic solvents contains a hetero ring429/326, Plural organic solvents (i.e., solvent mixture)429/231.95The alkali metal is lithium , Non/eExaminersPrimary: Maples, John S.Attorney, Agent or FirmForeign Patent References
International ClassH01M 10/40AbstractThe electrolyte for a lithium battery includes a non-aqueous organic solvent, a lithium salt, and an additive of the following Formula 1: wherein, X and Y are the same or different from each other and selected from O, S, CR2, or NR, where here R is H, a halogen, or an alkyl having a carbon number of less than or equal to 8, or neighboring alkyl groups are combined to each other to form a cycle or hetero cycle, and both X and Y are not oxygen (O),Ra to Rd are the same or different from each other and selected from H, a halogen, an alkoxy group having a carbon number of less than or equal to 8, or an unsaturated or saturated alkyl group having a carbon number of less than or equal to 8, or neighboring alkyl groups are combined to each other to form a cycle or hetero cycle, and at least one of Ra to Rd is a halogen. Other References
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