High-voltage-stable electrolytes for Li.sub.1+x Mn.sub.2 O.sub.4

Details High-voltage-stable electrolytes for Li.sub.1+x Mn.sub.2 O.sub.4 High-voltage-stable electrolytes for Li.sub.1+x Mn.sub.2 O.sub.4

1992-04-21

1993-03-09

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429224, H01M 1040

Patent

active

051926296

ABSTRACT:
An electrolyte resistant to oxidation normally resulting from high voltage charging of a secondary battery comprising a Li.sub.1+x Mn.sub.2 O.sub.4 intercalation positive electrode comprises a 0.5M to 2M solution of LiPF.sub.6 dissolved in a mixture of non-aqeuous dimethylcarbonate (DMC) and ethylene carbonate (EC) solvents wherein said solvents are present in a weight percent ratio range from about 95 DMC:5 EC to 20 DMC:80 EC.

REFERENCES:
patent: 4419423 (1983-12-01), Leger
patent: 4874680 (1989-10-01), Koshiba et al.
patent: 4904552 (1990-02-01), Furukawa et al.
patent: 5079109 (1992-01-01), Takami et al.
patent: 5110696 (1992-05-01), Shokoohi et al.

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