Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Reexamination Certificate
2007-08-07
2007-08-07
Crepeau, Jonathan (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
C429S329000, C252S062200
Reexamination Certificate
active
10949519
ABSTRACT:
The present invention relates to an electrolytic solution for a lithium battery and a lithium battery using the same. The organic electrolytic solution includes a lithium salt, a mixed organic solvent comprising a high dielectric constant solvent and a low boiling-point solvent, and an additive. The additive used in the electrolytic solution is a heterocyclic compound of Formula (1):where R1, R2and R3may each independently be a C1-C10 linear or branched alkyl group; R4may be a C1-C10 linear or branched alkylene group; X may be a heterocyclic ring containing N and O whereby a tetraallkyl orthosilicate functional group may be linked to N. The lithium battery using the organic electrolytic solution of the present invention is highly reliable and maintains a constant thickness during a charge/discharge cycle.
REFERENCES:
patent: 6255021 (2001-07-01), Kusumoto et al.
patent: 2003/0070283 (2003-04-01), Webber
Trofimov, B. et al., “Triethyl 2-(1,3-oxazolidin-3-yl)ethyl orthosilicate as a new type electrolyte additive for lithium-ion batteries with graphite anodes,” J. Power Sources 147, pp. 260-263, Mar. 2005.
Cho Myung-Dong
Kim Han-su
Lee Hyo-Sug
Trofimov Boris A.
Crepeau Jonathan
H.C. Park & Associates PLC
Samsung SDI & Co., Ltd.
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