Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Patent
1990-05-15
1992-01-07
Kalafut, Stephen J.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
H01M 1040
Patent
active
050791095
ABSTRACT:
A nonaqueous electrolyte secondary battery comprising a positive electrode housed in a case a negative electrode arranged in the case so that a separator is sandwiched between the positive and negative electrodes consisting of lithium or lithium-containing material, and a nonaqueous electrolyte contained in the case and prepared by dissolving an electrolytic salt consisting of lithium phosphate hexafluoride (LiPF.sub.6) or lithium borofluoride (LiBF.sub.4) in a solvent mixture consisting of ethylene carbonate, 2-methyltetrahydrofuran, and at least one ester-based nonaqueous solvent selected from the group consisting of butylene carbonate, dimethyl carbonate, .gamma.-butyrolactone, and sulfolane.
REFERENCES:
patent: 3701688 (1972-10-01), Gabano et al.
patent: 3960595 (1976-06-01), Lehmann et al.
patent: 4737424 (1988-04-01), Tobishima et al.
patent: 4880714 (1989-11-01), Bowden
Japanese Patent Abstracts, for Kokai No. 59/134568 Section E, No. 282 (vol. 8, No. 264) p. 12, Dec. 4, 1984.
Electrochimice Acta vol. 23, pp. 55-62 "The Effect of Desicants on the Cycling Efficiency of Lithium Electrode in Propylene Carbonated-Based Electrolytes"; V. R. Koch et al.; 1978.
Inada Kuniaki
Kurisu Norihito
Ohsaki Takahisa
Takabayashi Junichi
Takami Norio
Kabushiki Kaisha Toshiba
Kalafut Stephen J.
Toshiba Battery Co., Ltd.
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