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US 2022/0029150 A1Published application
Negative electrode for lithium secondary battery and lithium secondary battery including the same
AssigneeLG Energy Solution, Ltd.
InventorsSun Young SHIN, Je Young KIM, Yong Ju LEE
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Abstract
The present invention relates to a negative electrode for a lithium secondary battery and a lithium secondary battery including the negative electrode, wherein, since the negative electrode of the present invention includes a silicon oxide (SiOx, 0<x<2) composite containing magnesium (Mg) in a negative electrode active material and optimizes a type and an amount of a conductive agent, the lithium secondary battery including the negative electrode may improve a decrease in early-cycle capacity and high-temperature storage performance.
Claims15
A negative electrode for a lithium secondary battery,
- comprising a negative electrode collector and a negative electrode active material layer disposed on the negative electrode collector, wherein the negative electrode active material layer comprises:
- a negative electrode active material including a silicon oxide-(SiOx, 0<x<2) composite containing magnesium (Mg);
- a first conductive agent comprising a line-type conductive agent;
- and
- a second conductive agent comprising at least one of a point-type conductive agent or a flaky graphite-based conductive agent,
- wherein an amount of the first conductive agent is in a range of 0.5 wt % to 1.7 wt % based on a total weight of the negative electrode active material layer, and
- a product of an amount (wt %) and a Brunauer-Emmett-Teller (BET) specific surface area (m2/g) of the second conductive agent has a value of 100 or less.
4 more elements
Dependencies are inferred from the claim text.