Non-aqueous electrolyte and non-aqueous electrolyte cell
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsTadayoshi Takahashi, Shinichi Kawaguchi, Nobuharu Koshiba
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Abstract
In a non-aqueous electrolyte comprising an organic solvent and a solute dissolved in the organic solvent, a lithium salt containing at least one organic anion selected from phthalimide, a derivative of phthalimide, phthalimidine and a derivative of phthalimidine is used as the solute. Such non-aqueous electrolyte is not liable to react with the negative electrode in a primary battery and a secondary battery during a long-term storage at high temperatures. As a consequence, by using this non-aqueous electrolyte, a non-aqueous electrolyte battery having an excellent storage property can be obtained; and the charge/discharge cycle characteristics are improved in a secondary battery.
Claims5
A non-aqueous electrolyte comprising a solvent and a solute dissolved in said solvent,
- wherein said solute comprises at least one selected from the group consisting of lithium salts represented by the general formula (1):
- where X1 to X4 are independently hydrogen atoms, F, Cl, Br, I or alkyl groups having 1 to 3 carbon atoms, and lithium salts represented by the general formula (2):
- where X5 to X8 are independently hydrogen atoms, F, Cl, Br, I or alkyl groups having 1 to 3 carbon atoms.
Dependencies are inferred from the claim text.