Non-aqueous secondary battery
AssigneeHitachi Maxell, Ltd.
InventorsJinbao ZHAO, Eri KOJIMA
Life of this patent
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Abstract
A non-aqueous secondary battery contains a positive electrode, a negative electrode, a separator and a non-aqueous electrolytic solution. The positive electrode contains a layered structure lithium-containing compound oxide, or a spinel lithium-containing compound oxide containing manganese as an active material. The non-aqueous electrolytic solution contains at least one additive selected from a sulfonic acid anhydride, a sulfonate ester derivative, a cyclic sulfate derivative and a cyclic sulfonate ester derivative, and a vinylene carbonate or a derivative of the vinylene carbonate.
Claims18
A non-aqueous secondary battery comprising:
- a positive electrode;
- a negative electrode;
- a separator;
- a non-aqueous electrolytic solution;
- and
- a battery case, wherein
- the positive electrode, the negative electrode, the separator and the non-aqueous electrolytic solution are contained in the battery case,
- a laminated case composed a laminated film of aluminum and resin is used for the battery case,
- the non-aqueous electrolytic solution contains a cyclic sulfonate ester derivative expressed by the general formula (4),
- the positive electrode comprises a layered lithium-containing compound oxide containing manganese as an active material, and
- a potential of the positive electrode is 4.35V or higher versus a Li reference electrode where the battery is charged up to a designed electric capacity:
- wherein R6 in the general formula (4) represents independently hydrogen or an alkyl group having 1-4 of carbon atoms, which can have a fluorinated substituent, m is 0, 1 or 2.
A non-aqueous secondary battery comprising:
- a positive electrode;
- a negative electrode;
- a separator;
- a non-aqueous electrolytic solution;
- and
- a battery case, wherein
- the positive electrode, the negative electrode, the separator and the non-aqueous electrolytic solution are contained in the battery case,
- a rectangular metal case or a cylindrical metal case is used for the battery case, the non-aqueous electrolytic solution contains a cyclic sulfonate ester derivative expressed by the general formula (4),
- the positive electrode comprises a layered lithium-containing compound oxide containing manganese as an active material, and
- a potential of the positive electrode is 4.35V or higher versus a Li reference electrode where the battery is charged up to a designed electric capacity:
- wherein R6 in the general formula (4) represents independently hydrogen or an alkyl group having 1-4 of carbon atoms, which can have a fluorinated substituent, m is 0, 1 or 2.
A non-aqueous secondary battery comprising:
- a positive electrode;
- a negative electrode;
- a separator;
- a non-aqueous electrolytic solution;
- and
- a battery case, wherein
- the positive electrode, the negative electrode, the separator and the non-aqueous electrolytic solution are contained in the battery case,
- one case selected from the group consisting of a laminated case composed of a laminated film of aluminum and resin, a rectangular metal case and a cylindrical metal case is used for the battery case,
- the non-aqueous electrolytic solution contains a cyclic sulfonate ester derivative expressed by the general formula (4),
- the positive electrode comprises a layered lithium-containing compound oxide containing manganese as an active material, and
- a potential of the positive electrode is about 4.25V or higher versus a Li reference electrode where the battery is charged up to a designed electric capacity:
- wherein R6 in the general formula (4) represents independently hydrogen or an alkyl group having 1-4 of carbon atoms, which can have a fluorinated substituent, m is 0, 1 or 2.
Dependencies are inferred from the claim text.