New patent application published for: ELECTRODE SLURRY, ELECTRODE COMPRISING SAME, LITHIUM SECONDARY BATTERY, AND BATTERY PACK
ELECTRODE SLURRY, ELECTRODE COMPRISING SAME, LITHIUM SECONDARY BATTERY, AND BATTERY PACK
Abstract
Disclosed is an electrode slurry, an electrode including the same, a lithium secondary battery, and a battery pack. The electrode can ensure battery characteristics while preventing thermal runaway. The electrode slurry includes an electrode active material, a conductive material, a binder, a solvent for forming a slurry, and a flame-retardant material, in which the flame-retardant material has a solubility of less than 10 mg/cc in a carbonate-containing solvent at 20 °C and includes a specific type of compound.
Inventors:
KO; Minjin (Daejeon, KR), KWON; Yohan (Daejeon, KR), LEE; Jaewook (Daejeon, KR), PARK; Seungwon (Daejeon, KR), MIN; Jiwon (Daejeon, KR), PARK; Junhyoung (Daejeon, KR), MIN; Kyeongjun (Daejeon, KR)
Applicant:
LG ENERGY SOLUTION, LTD. (Seoul, KR)
Family ID:
1000009495739
Assignee:
LG ENERGY SOLUTION, LTD. (Seoul, KR)
Appl. No.:
19/485965
Filed (or PCT Filed):
December 27, 2024
PCT No.:
PCT/KR2024/021283
Claims
1. An electrode slurry comprising: an electrode active material; a conductive material; a binder; a solvent configured to form a slurry; and a flame-retardant material, wherein the flame-retardant material has a solubility of less than 10 mg/cc in a carbonate-containing solvent at 20 °C and comprises a straight-chain or branched-chain polyphosphate-containing compound.
2. The electrode slurry of claim 1, wherein the straight-chain or branched-chain polyphosphate-containing compound comprises at least one of ammonium and halogen.
3. The electrode slurry of claim 1, wherein a content of the flame-retardant material is in a range of 1 part by weight or more and 20 parts by weight or less relative to 100 parts by weight of the electrode slurry.
4. The electrode slurry of claim 1, wherein the conductive material comprises at least one of a planar conductive material, a linear conductive material, and a point-like conductive material.
5. The electrode slurry of claim 1, wherein the binder comprises an aqueous binder or a non-aqueous binder.
6. An electrode comprising: an electrode current collector layer; and an electrode active material layer comprising the electrode slurry of claim 1 on one surface or both surfaces of the electrode current collector layer.
7. A lithium secondary battery comprising: a first electrode; a second electrode; a separator between the first electrode and the second electrode; and an electrolyte, wherein at least one of the first electrode and the second electrode comprises the electrode of claim 6.
8. The lithium secondary battery of claim 7, wherein the electrolyte comprises a solvent, a salt, and an additive.
9. The lithium secondary battery of claim 7, wherein the electrolyte comprises a carbonate-containing solvent.
10. A battery pack comprising the lithium secondary battery of claim 7 as a unit cell.
11. The electrode of claim 6, wherein the electrode is a negative electrode.
12. The electrode of claim 6, wherein the electrode is a positive electrode.
13. The electrode slurry of claim 1, wherein the binder comprises polyacrylamide and the flame-retardant material comprises ammonium polyphosphate.
14. The electrode slurry of claim 1, wherein the conductive material comprises plate-like graphite and single-walled carbon nanotubes (SWCNTs).
- Company
- LG ENERGY SOLUTION, LTD.
- Keywords
- H01M4/628, H01M4/13, H01M4/622, H01M4/625, H01M10/0525, H01M10/0569