Negative electrode for lithium secondary battery and method of manufacturing the same
AssigneeSK On Co., Ltd.
InventorsEun Jun Park, Gwi Ok Park, Hyo Shik Kil, In Ae Lee
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Abstract
Provided are a negative electrode for a lithium secondary battery and a method of manufacturing the same. The negative electrode for a lithium secondary battery according to an embodiment of the present invention includes a silicon-based material doped with lithium having a content A, iron having a content B, and aluminum having a content C, wherein, by ICP analysis, 5,000 ppm≤A≤150,000 ppm, 5 ppm≤B≤1,500 ppm, 2.5 ppm≤C≤1,000 ppm.
Claims8
A negative electrode for a lithium secondary battery, comprising:
- a silicon-based material doped with lithium having a content A, iron having a content B, and aluminum having a content eC,
- wherein, by ICP analysis,
- 5
- ,
- 000
-
- ppm
- ≤
- A
- ≤
- 150
- ,
- 000
-
- ppm
- ,
- 5
-
- ppm
- ≤
- B
- ≤
- 1
- ,
- 500
-
- ppm
- ,
- 2.5
- ppm
- ≤
- C
- ≤
- 1
- ,
- 000
-
- ppm
- .
A negative electrode for a lithium secondary battery comprising a silicon-based material selected from the group consisting of Si, SiOx (0<x≤2), a Si-containing alloy, and Si/C composite, or a combination thereof including iron and aluminum,
- wherein the silicon-based material doped with lithium having a content A, iron having a content B, and aluminum having a content eC,
- wherein, by ICP analysis,
- 5
- ,
- 000
-
- ppm
- ≤
- A
- ≤
- 150
- ,
- 000
-
- ppm
- ,
- 5
-
- ppm
- ≤
- B
- ≤
- 1
- ,
- 500
-
- ppm
- ,
- 2.5
- ppm
- ≤
- C
- ≤
- 1
- ,
- 000
-
- ppm
- .
Dependencies are inferred from the claim text.