Heat-resistance lithium cell

Disclosed is a heat-resistance lithium cell of which thermal stability and electrochemical properties such as discharging property are not degraded even in severe high temperature environment, and thereby the long-term reliability of such a heat-resistance lithium cell is improved. A lithium cell ha...

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Main Authors FUKUOKA, SATORU, NISHIGUCHI, NOBUHIRO, NARUSE, SATORU, MORITA, SEIJI, MURAKI, MASAYUKI
Format Patent
LanguageEnglish
Published 11.09.2004
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 heat-resistance lithium cell of which thermal stability and electrochemical properties such as discharging property are not degraded even in severe high temperature environment, and thereby the long-term reliability of such a heat-resistance lithium cell is improved. A lithium cell has a positive electrode, a negative electrode containing lithium, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte liquid including solute and nonaqueous solvent. The nonaqueous solvent contains one or more compounds out of the compounds expressed by following general formula (1) as main components: X-(O-C2H4)n-O-Y, (wherein X and Y independently represent methyl or ethyl, and n is 2 or 3). The main components in the nonaqueous solvent ranges from 90% to 100% by volume of the nonaqueous solvent, and the separator has a melting point of more than 150 DEG C.
Bibliography:Application Number: TW200392120766