Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Reexamination Certificate
2005-11-23
2009-02-24
Hendrickson, Stuart (Department: 1793)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
C429S326000, C429S332000, C429S339000, C429S341000, C252S062200, C252S182100, C252S500000
Reexamination Certificate
active
07494745
ABSTRACT:
An organic electrolytic solution and a lithium battery employing the same are provided. The organic electrolytic solution includes: a lithium salt; an organic solvent containing a high dielectric constant solvent and a low boiling point solvent; and a carbonate or oxalate derivative having at least one substituted or unsubstituted cyano group. The organic electrolytic solution and the lithium battery employing the same have improved reductive decomposition stability, thereby decreasing an irreversible capacity after a first cycle and improving the charge/discharge efficiency and lifespan of the battery. The lithium battery has non-varying chemical properties at room temperature and a uniform thickness after standard charging, and thus has high reliability.
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Yang et al, “Composition analysis of the passive film on the carbon electrode of Li-ion battery with an EC-based electrolyte,” J. Power Soruces 1998, 72, 66-70.
Cho Myung-Dong
Im Dong-Min
Kim Han-Su
Mikhalev Albina
Trofimov Boris A.
H.C. Park & Associates PLC
Hendrickson Stuart
Samsung SDI & Co., Ltd.
Vijayakumar Kallambella
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