Nonaqueous electrolyte secondary battery

Disclosed is a nonaqueous electrolyte secondary battery, comprising a case (1) having a wall thickness (X) not larger than 0.3 mm, a positive electrode (6) provided in the case (1), a negative electrode (9) provided in the case (1) and the negative electrode containing a carbonaceous material capabl...

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Bibliographic Details
Main Authors KUZUHARA MASAFUMI, SATO ASAKO, ODAKE KAORU
Format Patent
LanguageEnglish
Published 03.04.2002
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:Disclosed is a nonaqueous electrolyte secondary battery, comprising a case (1) having a wall thickness (X) not larger than 0.3 mm, a positive electrode (6) provided in the case (1), a negative electrode (9) provided in the case (1) and the negative electrode containing a carbonaceous material capable of absorbing-desorbing lithium ions, and a nonaqueous electrolyte provided in the case (1) and the nonaqueous electrolyte containing a nonaqueous solvent including gamma -butyrolactone and a solute dissolved in the nonaqueous solvent, wherein after being discharged to 3V with a current of 0.2C at room temperature, the voltage reduction caused by the self-discharge at 60 DEG C is not larger than 1.5V in 3 weeks.
Bibliography:Application Number: CN20011032683