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US 12,597,612 B2Granted
Nonaqueous electrolyte energy storage device, and method for manufacturing nonaqueous electrolyte energy storage device
AssigneeGS Yuasa International Ltd.
InventorNorio Yamatani
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Abstract
An aspect of the present invention is a nonaqueous electrolyte energy storage device including: a positive electrode including a positive composite layer containing a transition metal oxide and a boron element; a negative electrode; and a nonaqueous electrolyte containing a sulfuric acid ester compound, in which the content of the boron element in the positive composite layer is 0.03% by mass or more.
Claims6
A nonaqueous electrolyte energy storage device comprising:
- a positive electrode comprising a positive composite layer containing a transition metal oxide and an elemental boron;
- a negative electrode;
- and
- a nonaqueous electrolyte containing a sulfuric acid ester compound,
- wherein a content of the elemental boron in the positive composite layer is 0.03% by mass or more, and
- the sulfuric acid ester compound includes a compound represented by the following formula (4):
- where R7 and R8 each independently represent a halogen atom, an alkyl group having 1 to 4 carbon atoms, or a halogenated alkyl group having 1 to 4 carbon atoms.
4 more elements
A method for manufacturing a nonaqueous electrolyte energy storage device, the method comprising:
- preparing a positive electrode comprising a positive composite layer containing a transition metal oxide and an elemental boron;
- preparing a negative electrode;
- and
- preparing a nonaqueous electrolyte containing a sulfuric acid ester compound,
- wherein the preparing the positive electrode comprises:
- providing the positive composite layer containing the elemental boron such that a content of the elemental boron in the positive composite layer is 0.03% by mass or more, and
- the sulfuric acid ester compound includes a compound represented by the following formula (4):
- where R7 and R8 each independently represent a halogen atom, an alkyl group having 1 to 4 carbon atoms, or a halogenated alkyl group having 1 to 4 carbon atoms.
5 more elements
Dependencies are inferred from the claim text.