Non-aqueous electrolytic solution and lithium secondary battery
AssigneeUbe Industries, Ltd.
InventorsToshikazu Hamamoto, Akira Ueki, Koji Abe, Tsutomu Takai
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Abstract
A non-aqueous electrolytic solution favorably employable for a lithium secondary battery employs a non-aqueous solvent composed of a cyclic carbonate, a linear carbonate and vinylene carbonate, and shows a reduction potential of less than 1 volt, with reference to lithium, or contains chlorine atom-containing organic compounds in an amount of 10 ppm or less, in terms of chlorine atom content.
Claims18
A non-aqueous electrolytic solution which comprises a non-aqueous solvent comprising a cyclic carbonate other than vinylene carbonate, a linear carbonate and vinylene carbonate, one or more chlorine atom-containing organic compounds in an amount of 10 ppm or less, in terms of chlorine atom content, and an electrolyte dissolved in the non-aqueous solvent, and which shows a reduction potential of less than 1 volt, with reference to lithium.
A non-aqueous electrolytic solution which comprises a non-aqueous solvent comprising a cyclic carbonate other than vinylene carbonate, a linear carbonate and vinylene carbonate, and an electrolyte dissolved in the non-aqueous solvent, and which contains one or more chlorine atom-containing organic compounds in an amount of 10 ppm or less, in terms of chlorine atom content.
The non-aqueous electrolytic solution of claim which contains one or more chlorine atom-containing organic compounds in an amount of 5 ppm or less, in terms of chlorine atom content.
A non-aqueous solvent comprising a cyclic carbonate other than vinylene carbonate, a linear carbonate and vinylene carbonate, which contains one or more chlorine atom-containing organic compounds in an amount of 10 ppm or less, in terms of chlorine atom content.
A lithium secondary battery comprising a positive electrode, a graphite negative-electrode having a lattice spacing of 0.34 nm or less in terms of d002, and a non-aqueous electrolytic solution which comprises a non-aqueous solvent comprising a cyclic carbonate other than vinylene carbonate, a linear carbonate and vinylene carbonate, one or more chlorine atom-containing organic compounds in an amount of 10 ppm or less, in terms of chlorine atom content, and an electrolyte dissolved in the non-aqueous solvent, and which shows a reduction potential of less than 1 volt, with reference to lithium.
A lithium secondary battery comprising a positive electrode, a graphite negative-electrode having a lattice spacing of 0.34 nm or less in terms of d002, and a non-aqueous electrolytic solution which comprises a non-aqueous solvent comprising a cyclic carbonate other than vinylene carbonate, a linear carbonate and vinylene carbonate, and an electrolyte dissolved in the non-aqueous solvent, and which contains one or more chlorine atom-containing organic compounds in an amount of 10 ppm or less, in terms of chlorine atom content.
Dependencies are inferred from the claim text.