Lithium Secondary Battery
AssigneeLG Energy Solution, Ltd.
InventorsJeong Woo Lee, Min Ji Heo
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Abstract
The present invention relates to a lithium secondary battery having excellent battery performance at high voltage, wherein the lithium secondary battery according to the present invention includes a positive electrode which includes a positive electrode active material layer including a lithium nickel cobalt manganese-based oxide having an average particle diameter of primary particles of 3 μm or more and a lithium cobalt-based oxide, a negative electrode which includes a negative electrode active material layer including a negative electrode active material, and an electrolyte, wherein a ratio of negative electrode capacity to positive electrode capacity is in a range of 1.06 to 1.15.
Claims13
A lithium secondary battery comprising:
- a positive electrode which includes a positive electrode active material layer including a lithium nickel cobalt manganese-based oxide and a lithium cobalt-based oxide;
- a negative electrode which includes a negative electrode active material layer including a negative electrode active material;
- and
- an electrolyte,
- wherein an average particle diameter of primary particles of the lithium nickel cobalt manganese-based oxide is 3 μm or more, and
- a ratio of negative electrode capacity to positive electrode capacity is in a range of 1.06 to 1.15.
Dependencies are inferred from the claim text.