Negative electrode active material for lithium secondary battery, and lithium secondary battery including negative electrode including the negative electrode active material

Inventors: Hana Yoo (Yongin-si, KR); Deokhyun Kim (Yongin-si, KR); Jaehyuk Kim (Yongin-si, KR); Soonsung Suh (Yongin-si, KR); Jaemyung Kim (Yongin-si, KR); Heesang Jeon (Yongin-si, KR); Yungu Cho (Yongin-si, KR); Jongsoo Cho (Yongin-si, KR)

Assignees: Samsung SDI Co., Ltd.; MK Electron Co., Ltd.

H01M4/386 C22C29/00 H01M4/133 H01M4/134 H01M4/38 H01M4/505 H01M10/0525 H01M2004/027

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Quick Facts

Patent No.: US 10,490,811
App. No.: 15/712,548
Granted: Nov 26, 2019
Kind: B2

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Abstract

A negative electrode active material for a lithium secondary battery including silicon (Si), manganese (Mn), Component A including at least one selected from iron (Fe), molybdenum (Mo), chromium (Cr), zinc (Zn), titanium (Ti), nickel (Ni), vanadium (V), tungsten (W), and yttrium (Y), and Component B including at least one selected from carbon (C), boron (B), oxygen (O), nitrogen (N), phosphorous (P), and sulfur (S), wherein a total amount of Si, Mn, and Component A is about 70 atom % or less, an amount of Component B is 30 atom % or more, and a total amount of Mn and Component A is in a range of about 10 atom % to about 35 atom %.

Claims (24)

1. A negative electrode active material for a lithium secondary battery, the negative electrode active material comprising:

silicon (Si);

manganese (Mn);

Component A including at least one selected from iron (Fe), molybdenum (Mo), chromium (Cr), zinc (Zn), titanium (Ti), nickel (Ni), vanadium (V), tungsten (W), and yttrium (Y); and

Component B including at least one selected from carbon (C), boron (B), oxygen (O), nitrogen (N), phosphorous (P), and sulfur (S),

wherein a total amount of Si, Mn, and Component A is about 70 atom % or less,

an amount of Component B is 30 atom % or more, and

a total amount of Mn and Component A is in a range of about 10 atom % to about 35 atom %, and an amount of Si is in a range of about 35 atom % to about 56 atom %.

2. The negative electrode active material as claimed as claim 1 , wherein an atomic ratio of Mn to Component A as mixed is in a range of 1:9 to 9:1.

3. The negative electrode active material as claimed as claim 1 , wherein Component A is Fe.

4. The negative electrode active material as claimed in claim 1 , wherein the negative active material is represented by the formula Si-M-carbon (C), in which M includes manganese (Mn) and at least one selected from iron (Fe), molybdenum (Mo), chromium (Cr), zinc (Zn), titanium (Ti), and nickel (Ni).

5. The negative electrode active material as claimed as claim 4 , wherein,

in the negative electrode active material represented by the formula Si-M-carbon (C), an amount of M is in a range of about 10 atom % to about 35 atom %, and an amount of carbon is in a range of about 30 atom % to about 46 atom %.

6. The negative electrode active material as claimed as claim 4 , wherein,

in the negative electrode active material represented by the formula Si-M-carbon (C), M includes manganese (Mn) and a metal (M 1 ) including at least one selected from iron (Fe), molybdenum (Mo), chromium (Cr), zinc (Zn), titanium (Ti), and nickel (Ni).

7. The negative electrode active material as claimed as claim 6 , wherein

an atomic ratio of manganese to metal (M 1 ) as mixed in M is in a range of 1:9 to 9:1.

8. The negative electrode active material as claimed as claim 6 , wherein,

in the negative electrode active material represented by the formula Si-M-carbon (C), an amount of manganese is in a range of about 1.2 atom % to about 31.5 atom % based on a total amount of Si-M-carbon (C), and an amount of metal (M 1 ) is in a range of about 1.2 atom % to about 31.5 atom % based on the total amount of Si-M-carbon (C).

9. A negative electrode active material including at least one selected from: Si 49.2 Mn 9.7 Fe 1.1 C 40 , Si 49.2 Mn 5.4 Fe 5.4 C 40 , Si 49.2 Mn 1.1 Fe 9.7 C 40 , Si 49.2 Mn 9.7 Mo 1.1 C 40 , Si 49.2 Mn 5.4 Mo 5.4 C 40 , Si 49.2 Mn 1.1 Mo 9.7 C 40 , Si 49.2 Mn 9.7 Cr 1.1 C 40 , Si 49.2 Mn 5.4 Cr 5.4 C 40 , Si 49.2 Mn 1.1 Cr 9.7 C 40 , Si 49.2 Mn 9.7 Zn 1.1 C 40 , Si 49.2 Mn 5.4 Zn 5.4 C 40 , Si 49.2 Mn 1.1 Zn 9.7 C 40 , Si 49.2 Mn 9.7 Ti 1.1 C 40 , Si 49.2 Mn 5.4 Ti 5.4 C 40 , Si 49.2 Mn 1.1 Ti 9.7 C 40 , Si 49.2 Mn 9.7 Ni 1.1 C 40 , Si 49.2 Mn 5.4 Ni 5.4 C 40 , Si 49.2 Mn 1.1 Ni 9.7 C 40 , Si 48.6 Mn 10.3 Fe 1.1 C 40 , Si 48.6 Mn 5.7 Fe 5.7 C 40 , Si 48.6 Mn 1.1 Fe 10.3 C 40 , Si 48.6 Mn 10.3 Mo 1.1 C 40 , Si 48.6 Mn 5.7 Mo 5.7 C 40 , Si 48.6 Mn 1.1 Mo 10.3 C 40 , Si 48.6 Mn 10.3 Cr 1.1 C 40 , Si 48.6 Mn 5.7 Cr 5.7 C 40 , Si 48.6 Mn 1.1 Cr 10.3 C 40 , Si 48.6 Mn 10.3 Zn 1.1 C 40 , Si 48.6 Mn 5.7 Zn 5.7 C 40 , Si 48.6 Mn 1.1 Zn 10.3 C 40 , Si 48.6 Mn 10.3 Ti 1.1 C 40 , Si 48.6 Mn 5.7 Ti 5.7 C 40 , Si 48.6 Mn 1.1 Ti 10.3 C 40 , Si 48.6 Mn 10.3 Ni 1.1 C 40 , Si 48.6 Mn 5.7 Ni 5.7 C 40 , Si 48.6 Mn 1.1 Ni 10.3 C 40 , Si 48.0 Mn 10.8 Fe 1.2 C 40 , Si 48.0 Mn 6.6 Fe 6.0 C 40 , Si 48.6 Mn 1.2 Fe 10.8 C 40 , Si 48.0 Mn 10.8 Mo 1.2 C 40 , Si 48.0 Mn 6.6 Mo 6.0 C 40 , Si 48.6 Mn 1.2 Mo 10.8 C 40 , Si 48.0 Mn 10.8 Cr 1.2 C 40 , Si 48.0 Mn 6.6 Cr 6.0 C 40 , Si 48.6 Mn 1.2 Cr 10.8 C 40 , Si 48.0 Mn 10.8 Zn 1.2 C 40 , Si 48.0 Mn 6.6 Zn 6.0 C 40 , Si 48.6 Mn 1.2 Zn 10.8 C 40 , Si 48.0 Mn 0.8 Ti 1.2 C 40 , Si 48.0 Mn 6.6 Ti 6.0 C 40 , Si 48.6 Mn 1.2 Ti 10.8 C 40 , Si 48.0 Mn 10.8 Ni 1.2 C 40 , Si 48.0 Mn 6.6 Ni 6.0 C 40 , Si 48.6 Mn 1.2 Ni 10.8 C 40 , Si 47.4 Mn 11.3 Fe 1.3 C 40 , Si 47.4 Mn 6.3 Fe 6.3 C 40 , Si 47.4 Mn 1.3 Fe 11.3 C 40 , Si 47.4 Mn 11.3 Mo 1.3 C 40 , Si 47.4 Mn 6.3 Mo 6.3 C 40 , Si 47.4 Mn 1.3 Mo 11.3 C 40 , Si 47.4 Mn 11.3 Cr 1.3 C 40 , Si 47.4 Mn 6.3 Cr 6.3 C 40 , Si 47.4 Mn 1.3 Cr 11.3 C 40 , Si 47.4 Mn 11.3 Zn 1.3 C 40 , Si 47.4 Mn 6.3 Zn 6.3 C 40 , Si 47.4 Mn 1.3 Zn 11.3 C 40 , Si 47.4 Mn 11.3 Ti 1.3 C 40 , Si 47.4 Mn 6.3 Ti 6.3 C 40 , Si 47.4 Mn 1.3 Ti 11.3 C 40 , Si 47.4 Mn 11.3 Ni 1.3 C 40 , Si 47.4 Mn 6.3 Ni 6.3 C 40 , Si 47.4 Mn 1.3 Ni 11.3 C 40 , Si 46.8 Mn 11.9 Fe 1.3 C 40 , Si 46.8 Mn 6.6 Fe 6.6 C 40 , Si 46.8 Mn 1.3 Fe 11.9 C 40 , Si 46.8 Mn 11.9 Mo 1.3 C 40 , Si 46.8 Mn 6.6 Mo 6.6 C 40 , Si 46.8 Mn 1.3 Mo 11.9 C 40 , Si 46.8 Mn 11.9 Cr 1.3 C 40 , Si 46.8 Mn 6.6 Cr 6.6 C 40 , Si 46.8 Mn 1.3 Cr 11.9 C 40 , Si 46.8 Mn 11.9 Zn 1.3 C 40 , Si 46.8 Mn 6.6 Zn 6.6 C 40 , Si 46.8 Mn 1.3 Zn 11.9 C 40 , Si 46.8 Mn 11.9 Ti 1.3 C 40 , Si 46.8 Mn 6.6 Ti 6.6 C 40 , Si 46.8 Mn 0.3 Ti 11.9 C 40 , Si 46.8 Mn 11.9 Ni 1.3 C 40 , Si 46.8 Mn 6.6 Ni 6.6 C 40 , Si 46.8 Mn 1.3 Ni 11.9 C 40 , Si 46.2 Mn 12.4 Fe 0.4 C 40 , Si 46.2 Mn 6.9 Fe 6.9 C 40 , Si 46.2 Mn 0.4 Fe 12.4 C 40 , Si 46.2 Mn 12.4 Mo 1.4 C 40 , Si 46.2 Mn 6.9 Mo 6.9 C 40 , Si 46.2 Mn 1.4 Mo 12.4 C 40 , Si 46.2 Mn 12.4 Cr 1.4 C 40 , Si 46.2 Mn 6.9 Cr 6.9 C 40 , Si 46.2 Mn 0.4 Cr 12.4 C 40 , Si 46.2 Mn 12.4 Zn 1.4 C 40 , Si 46.2 Mn 6.9 Zn 6.9 C 40 , Si 46.2 Mn 0.4 Zn 12.4 C 40 , Si 46.2 Mn 12.4 Ti 1.4 C 40 , Si 46.2 Mn 6.9 Ti 6.9 C 40 , Si 46.2 Mn 1.4 Ti 12.4 C 40 , Si 46.2 Mn 12.4 Ni 1.4 C 40 , Si 46.2 Mn 6.9 Ni 6.9 C 40 , Si 46.2 Mn 1.4 Ni 12.4 C 40 , Si 54.6 Mn 13.9 Fe 1.5 C 40 , Si 50.7 Mn 12.9 Fe 1.4 C 40 , Si 46.8 Mn 11.9 Fe 1.3 C 40 , Si 33.0 Mn 24.3 Fe 2.7 C 40 , Si 35.0 Mn 22.5 Fe 2.5 C 40 , Si 46.8 Mn 11.9 Fe 1.3 C 40 , and Si 56.0 Mn 3.6 Fe 0.4 C 40 .

10. The negative electrode active material as claimed as claim 1 , wherein

an average crystal grain size of the negative electrode active material is in a range of about 0.5 nm to about 50 nm, and

an average particle size of the negative electrode active material is in a range of about 0.5 μm to about 10 μm.

11. A lithium secondary battery comprising a negative electrode that includes the negative electrode active material as claimed as claim 1 .

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 22, 2017

From: CHO, YUNGU; YOO, HANA; KIM, DEOKHYUN; KIM, JAEHYUK; SUH, SOONSUNG; KIM, JAEMYUNG; JEON, HEESANG; CHO, JONGSOO

To: SAMSUNG SDI CO., LTD.; MK ELECTRON CO., LTD.

Reel/Frame 043663/0395 →

Priority Claims (1)

KR 10-2016-0122381 · Sep 23, 2016 · national

Continuity (1)

Related Publication 20180090756A1 · Mar 29, 2018