CA2556201A1 - An electrode for a rechargeable lithium battery and a rechargeable lithium battery - Google Patents
An electrode for a rechargeable lithium battery and a rechargeable lithium battery Download PDFInfo
- Publication number
- CA2556201A1 CA2556201A1 CA002556201A CA2556201A CA2556201A1 CA 2556201 A1 CA2556201 A1 CA 2556201A1 CA 002556201 A CA002556201 A CA 002556201A CA 2556201 A CA2556201 A CA 2556201A CA 2556201 A1 CA2556201 A1 CA 2556201A1
- Authority
- CA
- Canada
- Prior art keywords
- metal
- electrode
- lithium battery
- rechargeable lithium
- alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
An electrode for a rechargeable lithium battery, which is high in discharge capacity and excellent in cycle characteristics, comprising a layer composed of a metal that does not alloy with Li, a layer composed of a metal that alloys with Li and a mixed layer interposed between the layers and composed of these metals.
Claims (35)
1. An electrode for a rechargeable lithium battery, which comprises a layer composed of a metal that does not alloy with Li, a layer composed of a metal that alloys with Li and a mixed layer interposed between said layers and composed of these metals, said metal that does not alloy with Li is Cu, said metal that alloys with Li is Sn, and said mixed layer comprises at least one layer composed of Cu6Sn5.
2. An electrode for a rechargeable lithium battery, which comprises a substrate composed of a metal that does not alloy with Li, a layer provided on the substrate and composed of a metal that alloys with Li and a mixed layer interposed between said substrate and said layer and composed of these metals, said metal that does not alloy with Li is Cu, said metal that alloys with Li is Sn, and said mixed layer comprises at least one layer composed of Cu6Sn5.
3. An electrode for a rechargeable lithium battery, which comprises a substrate composed of a metal that alloys with Li, a layer provided on the substrate and composed of a metal that does not alloy with Li and a mixed layer interposed between said substrate and said layer and composed of these metals, said metal that does not alloy with Li is Cu, said metal that alloys with Li is Sn, and said mixed layer comprises at least one layer composed of Cu6Sn5.
4. An electrode for a rechargeable lithium battery, which comprises a substrate composed of a metal that does not alloy with Li, a layer provided on the substrate and composed of a metal that alloys with Li and a mixed layer of said metals formed by allowing said metal that does not alloy with Li to diffuse into said layer from said substrate, said metal that does not alloy with Li is Cu, said metal that alloys with Li is Sn, and said mixed layer comprises at least one layer composed of Cu6Sn5.
5. An electrode for a rechargeable lithium battery according to any one of claims 1 to 4, wherein said mixed layer has a thickness of 0.5 µm or more.
6. An electrode for a rechargeable lithium battery according to any one of claims 1 to 5, wherein said mixed layer is divided into islands by gaps formed therein in a manner extending in its thickness direction.
7. An electrode for a rechargeable lithium battery according to claim 6, wherein said gaps are formed on or after a first charge-discharge cycle.
8. An electrode for a rechargeable lithium battery according to claim 6 or 7, wherein said mixed layer has irregularities on its surface and said gaps are formed along valleys of said irregularities.
9. An electrode for a rechargeable lithium battery according to any one of claims 5 to 8, wherein said metal that does not alloy with Li is Cu and said metal that alloys with Li is Sn.
10. An electrode for a rechargeable lithium battery according to any one of claims 2 to 9, wherein said substrate has a surface roughness Ra of 0.01 to 2 µm.
11. An electrode for a rechargeable lithium battery according to any one of claims 2 to 9, wherein said substrate has a surface roughness Ra of 0.1 to 2 µm.
12. An electrode for a rechargeable lithium battery according to any one of claims 1 to 11, wherein said layer or substrate composed of a metal that alloys with Li is formed from an alloy of two or more metals that alloy with Li.
13. An electrode for a rechargeable lithium battery according to claim 12, wherein said alloy contains two or more metals that do not form an intermetallic compound with each other.
14. An electrode for a rechargeable lithium battery according to claim 12 or 13, wherein said metal that does not alloy with Li is Cu and said alloy is an alloy of Sn and Pb.
15. An electrode for a rechargeable lithium battery according to claim 12 or 13, wherein said metal that does not alloy with Li is Cu and said alloy is an alloy of Sn and Zn.
16. An electrode for a rechargeable lithium battery according to any one of claims 12 to 15, wherein one metal in said alloy has a concentration of up to 40% by weight.
17. An electrode for a rechargeable lithium battery according to claim 16, wherein said alloy is an alloy of Sn and Pb or an alloy of Sn and Zn and said one metal is Pb or Zn.
18. An electrode for a rechargeable lithium battery according to any one of claims 1 to 17, wherein said mixed layer has a concentration gradient so that a concentration of the metal that alloys with Li increases and a concentration of the metal that does not alloy with Li decreases toward the layer or substrate composed of a metal that alloys with Li.
19. An electrode for a rechargeable lithium battery according to any one of claims 1 to 18, wherein said mixed layer comprises at least two layers having different A:B
concentration ratios where A represents the metal that does not alloy with Li and B represents the metal that alloys with Li.
concentration ratios where A represents the metal that does not alloy with Li and B represents the metal that alloys with Li.
20. An electrode for a rechargeable lithium battery according to claim 19, wherein said mixed layer comprises a first layer provided on the layer or substrate composed of a metal that does not alloy with Li and having the concentration ratio of A:B = 10:1 - 2:1, and a second layer provided on said first layer and having the concentration ratio of A:B = 4:1 to 1:1.
21. An electrode for a rechargeable lithium battery according to any one of claims 1 to 20, wherein said mixed layer has voids.
22. An electrode for a rechargeable lithium battery according to any one of claims 1 to 21, wherein said mixed layer comprises an intermetallic compound of a metal that does not alloy with Li and a metal that alloys with Li.
23. An electrode for a rechargeable lithium battery according to any one of claims 1 to 22, wherein said mixed layer is formed by a heat treatment that causes diffusion of said metal that does not alloy with Li and said metal that alloys with Li.
24. An electrode for a rechargeable lithium battery according to claim 23, wherein said heat treatment is effected at a temperature of 160 to 240°C if the metal that does not alloy with Li is Cu and the metal that alloys with Li is Sn.
25. An electrode for a rechargeable lithium battery according to claim 24, wherein said heat treatment is effected at a temperature of 180 to 240°C.
26. An electrode for a rechargeable lithium battery according to any one of claims 2 or 4 to 25, wherein said substrate composed of a metal that does not alloy with Li is an electrolytic copper foil.
27. An electrode for a rechargeable lithium battery according to any one of claims 2 to 26, wherein said layer composed of a metal that alloys with Li or a metal that does not alloy with Li is provided in the form of a film plated on said substrate.
28. An electrode for a rechargeable lithium battery according to any one of claims 1 to 27, wherein a layer or substrate composed of a metal that does not alloy with Li is provided on one surface of the layer or substrate composed of a metal that alloys with Li, and a film which does not react with Li ions, permits passage of Li ions and has no ionic conductivity for Li ions is provided on the other surface of the layer or substrate composed of a metal that alloys with Li.
29. An electrode for a rechargeable lithium battery according to claim 28, wherein said film is a hard carbon film.
30. An electrode for a rechargeable lithium battery according to claim 29, wherein said hard carbon film shows a Raman scattering spectrum in which a ratio (Id/Ig) of a peak intensity Id around 1,400 cm-1 to a peak intensity Ig around 1,550 cm-1 is 0.5 to 3Ø
31. An electrode for a rechargeable lithium battery according to any one of claims 28 to 30, wherein said film has a thickness of 50 to 1,000 nm.
32. An electrode for a rechargeable lithium battery according to any one of claims 28 to 31, wherein said film has a volume resistivity of 1010 .OMEGA.cm or below.
33. An electrode for a rechargeable lithium battery according to any one of claims 28 to 32, wherein an interlayer is provided between the layer or substrate composed of a metal that alloys with Li and said film.
34. An electrode for a rechargeable lithium battery according to claim 33, wherein said interlayer is formed from at least one selected from Si, Ti, Zr, Ge, Ru, Mo, W and their oxides, nitrides and carbides.
35. A rechargeable lithium battery comprising a negative electrode comprised of the electrode according to any one of claims 1 to 34, a positive electrode and a nonaqueous electrolyte.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000-125606 | 2000-04-26 | ||
| JP2000125606 | 2000-04-26 | ||
| JP2000-284020 | 2000-09-19 | ||
| JP2000284020 | 2000-09-19 | ||
| JP2000346985 | 2000-11-14 | ||
| JP2000-346985 | 2000-11-14 | ||
| CA2407414A CA2407414C (en) | 2000-04-26 | 2001-04-24 | Electrode for rechargeable lithium battery and rechargeable lithium battery |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2407414A Division CA2407414C (en) | 2000-04-26 | 2001-04-24 | Electrode for rechargeable lithium battery and rechargeable lithium battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2556201A1 true CA2556201A1 (en) | 2002-10-22 |
| CA2556201C CA2556201C (en) | 2012-02-21 |
Family
ID=37193977
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2556201A Expired - Fee Related CA2556201C (en) | 2000-04-26 | 2001-04-24 | An electrode for a rechargeable lithium battery and a rechargeable lithium battery |
| CA2555664A Expired - Fee Related CA2555664C (en) | 2000-04-26 | 2001-04-24 | An electrode for a rechargeable lithium battery and a rechargeable lithium battery |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2555664A Expired - Fee Related CA2555664C (en) | 2000-04-26 | 2001-04-24 | An electrode for a rechargeable lithium battery and a rechargeable lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CA (2) | CA2556201C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11217788B2 (en) * | 2019-04-16 | 2022-01-04 | Board Of Trustees Of Northern Illinois University | Doped lithium anode, battery having a doped lithium anode, and methods of use thereof |
-
2001
- 2001-04-24 CA CA2556201A patent/CA2556201C/en not_active Expired - Fee Related
- 2001-04-24 CA CA2555664A patent/CA2555664C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2555664A1 (en) | 2002-10-22 |
| CA2555664C (en) | 2011-04-05 |
| CA2556201C (en) | 2012-02-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20140424 |