Non-aqueous electrolyte cell

DETAILED DESCRIPTION An object of the present invention, therefore, is to provide a non-aqueous electrolyte cell capable of drastically improving a high rate discharge characteristic after storage as well as before storage.
Another object of the present invention is to provide a non-aqueous electrolyte cell capable of improving a charge and discharge cycle characteristic before and after storage when used as a secondary cell.
The above objects are fulfilled by a non-aqueous electrolyte cell comprising a positive electrode, a negative electrode, and an electrolyte consisting of a solute and an organic solvent, the cell being characterized in that the solvent is a solvent mixture of a cyclic carbonate and a non-cyclic carbonate.
The above objects are also fulfilled by a dischargeable non-aqueous electrolyte primary cell comprising a positive electrode; a negative electrode including either one of lithium and a lithium alloy; and a non-aqueous electrolyte consisting of a solute and an organic solvent, wherein the organic solvent is a solvent mixture of a cyclic carbonate and a non-cyclic carbonate.
The above objects are also fulfilled by a rechargeable non-aqueous electrolyte secondary cell comprising a positive electrode having a rechargeable substance as an active material; a negative electrode having lithium or a lithium alloy as an active material; and a non-aqueous electrolyte consisting of a solute and an organic solvent, wherein the organic solvent is a solvent mixture of a cyclic carbonate and a non-cyclic carbonate.
The above objects are fulfilled for the following reasons: A storage characteristic in a non-aqueous electrolyte cell is deteriorated since a film having a low conductivity is generated by reaction between lithium and a solvent during long-term storage.
When the solvent comprises a cyclic carbonate such as propylene carbonate or ethylene carbonate, a film of Li.
sub.
2 CO.
sub.
3, which does not increase the internal resistance of the cell, is formed on the negative electrode, whereby the storage characteristic can be improved