US2013078509A1PendingUtilityA1
Non-aqueous secondary battery
Est. expiryJun 7, 2025(expired)· nominal 20-yr term from priority
H01M 10/0525H01M 10/05H01M 4/485Y02P70/50Y02E60/10H01M 4/131H01M 4/505H01M 10/058H01M 10/0567H01M 4/525Y10T29/4911H01M 10/0564
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Claims
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.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A non-aqueous secondary battery comprising:
a positive electrode; a negative electrode; a separator; and a non-aqueous electrolytic solution, wherein the positive electrode comprises, as an active material, a layered lithium-containing compound oxide containing manganese as a constituent element or a spinel lithium-containing compound oxide containing manganese as a constituent element, and the non-aqueous electrolytic solution contains a cyclic sulfate derivative expressed by the general formula (3) and a vinylene carbonate or a derivative of the vinylene carbonate:
wherein R 5 in the general formula (3) represents independently hydrogen or an alkyl group having 1-4 of carbon atoms, which can have a fluorinated substituent, n is 0 or 1.
2 . The non-aqueous secondary battery according to claim 1 , wherein the non-aqueous electrolytic solution contains 0.2 mass % or more of the cyclic sulfate derivative.
3 . The non-aqueous secondary battery according to claim 1 , wherein the non-aqueous electrolytic solution contains 5 mass % or less of the cyclic sulfate derivative.
4 . The non-aqueous secondary battery according to claim 1 , wherein the non-aqueous electrolytic solution contains 0.2 mass % or more of the vinylene carbonate or its derivative.
5 . The non-aqueous secondary battery according to claim 1 , wherein the non-aqueous electrolytic solution contains 5 mass % or less of the vinylene carbonate or its derivative.
6 . The non-aqueous secondary battery according to claim 1 , wherein the non-aqueous electrolytic solution contains, as the cyclic sulfate derivative, at least one selected from ethylene glycol sulfuric ester, 1,2-propanediol sulfuric ester, 1,3-propanediol sulfuric ester, 1,2-butanediol sulfuric ester, 1,3-butanediol sulfuric ester, 1,2-pentane diol sulfuric ester, 1,3-pentane diol sulfuric ester, 1,3-hexane diol sulfuric ester, and 1,3-heptane diol sulfuric ester.Join the waitlist — get patent alerts
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