Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Patent
1986-10-31
1988-04-12
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
429218, H01M 616
Patent
active
047374241
ABSTRACT:
The present invention provides an electrolyte for use on a secondary lithium battery comprising amorphous V.sub.2 O.sub.5 base cathode active material, a metallic lithium base active material, and an electrolytic solution lithium salt dissolved in a mixed organic solvent. The organic solvent is ethylene carbonate mixed with one organic solvent of 2-methyltetrahydrofuran, 2,5-dimethyltetrahydrofuran, 1,3-dioxalan, 4-methyl-1,3-dioxalan, 1,2-dimethoxyethane, etc. The mixed ratio of ethylene carbonate ranges within 10 to 50%, and water content of the electrolytic solution ranges within 400 to 5 ppm, and the content of impurities other than water ranges within 1000 to 10 ppm. The resultant secondary lithium battery is excellent in charge-discharge cycle life.
REFERENCES:
patent: 3960595 (1976-06-01), Lehmann et al.
patent: 4056663 (1977-11-01), Schlaikjer
patent: 4086403 (1978-04-01), Whittingham et al.
patent: 4118550 (1978-10-01), Koch
patent: 4129691 (1978-12-01), Broussely
patent: 4184017 (1980-01-01), Kelsey et al.
patent: 4385103 (1983-05-01), Louzos et al.
Electrochimica Acta, vol. 29, No. 10, pp. 1471-1476 (1984), Ethylene Carbonate/Ether Mixed Solvents Electrolyte for Lithium Batteries, S.-I. Tobishima et al.
Electrochimica Acta, vol. 30, No. 12, pp. 1715-1722 (1985), Lithium Cycling Efficiency and Conductivity for High Dielectric Solvent/Low Viscosity Solvent Mixed Systems, Shin-ichi Tobishima et al.
Electrochimica Acta, vol. 29, No. 2, pp. 267-271 (1984), Ethylene Carbonatepropylene Carbonate Mixed Electrolytes for Lithium Batteries, Shin-ichi Tobishima et al.
Arakawa Masayasu
Hirai Toshiro
Tobishima Shin-ichi
Yamaki Jun-ichi
Nippon Telegraph & Telephone Corporation
Skapars Anthony
LandOfFree
Secondary lithium battery does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Secondary lithium battery, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Secondary lithium battery will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1429030