Organic solvent electrolytes for high specific energy primary ce

Details Organic solvent electrolytes for high specific energy primary ce Organic solvent electrolytes for high specific energy primary ce

1978-01-13

1978-12-12

Lefevour, Charles F.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429220, 429221, H01M 614

Patent

active

041296915

ABSTRACT:
Electrolytes for use in lithium primary cells are made from a mixture of three organic solvents and an alkaline solute. The first solvent is chosen to have a dielectric constant greater than 35 (e.g. propylene carbonate), the second solvent is a linear polyether with its ether functional groups in the .gamma. position (e.g. 1-2 dimethoxyethane) and the third solvent has a high solvation power for dissolving large quantities of the alkaline salt (e.g. 1-3 dioxolane). The solvents are so chosen that the conductivity maxima of the electrolytes that would be obtained by mixing the solvents in pairs are higher than the conductivity maxima of the electrolytes that would be obtained by using each of the solvents on its own. The positive electrode cell using the electrolyte may be cupric oxide or ferrous disulphide.

REFERENCES:
patent: 3681144 (1972-08-01), Dey et al.
patent: 3796604 (1974-03-01), Gabano et al.
patent: 3853627 (1974-12-01), Lehmann
patent: 3960595 (1976-06-01), Lehmann et al.
patent: 3996069 (1976-12-01), Kronenberg

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