Electric Device
AssigneeNissan Motor Co., Ltd.
InventorsTakayuki Fujii, Yosuke Kita
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Abstract
An electric device that has excellent cycle durability includes: a positive electrode which includes a positive electrode active material layer containing a lithium nickel-based composite oxide and a spinel crystal-type lithium manganese composite oxide; and an electrolyte which contains a compound having an S═O bond in a molecule, in which a content ratio of the lithium nickel-based composite oxide in the positive electrode active material layer is 50% by mass or more with respect to the total mass of the lithium nickel-based composite oxide and the spinel crystal-type lithium manganese composite oxide, and a concentration of the compound having an S═O bond in a molecule in the electrolyte is 0.4 to 2.0% by mass.
Claims11
An electric device comprising:
- a positive electrode which includes a positive electrode active material layer containing a lithium nickel-based composite oxide and a spinel type lithium manganese composite oxide;
- and
- an electrolyte which contains a compound having an S═O bond in a molecule, wherein
- a content ratio of the lithium nickel-based composite oxide in the positive electrode active material layer is 60% by mass or more and 90% by mass or less with respect to the total mass of the lithium nickel-based composite oxide and the spinel type lithium manganese composite oxide,
- a concentration of the compound having an S═O bond in a molecule in the electrolyte is 0.4 to 2.0% by mass, and
- a value of ratio of a rated capacity to a battery area (a projection area of a battery including a battery outer casing) is 5 cm2/Ah or more, and the rated capacity is 3 Ah or more.
(canceled)
Dependencies are inferred from the claim text.