Anode thin film for lithium secondary battery and preparation method thereof

• US 20030044682A1
• Filed: 01/10/2002
• Published: 03/06/2003
• Est. Priority Date: 08/28/2001
• Status: Active Grant

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: Oh, Joo-Yeal, Baik, Hong-Koo, Lee, Sung-man, Park, Young-Sin
• Granted Patent: US 7,052,801 B2
• Time in Patent Office: Days
• US Class Current: 429/223
• CPC Class Codes: B22F 2009/041 by mechanical alloying, e.g. blending, milling
• CPC Class Codes: B22F 2998/10 Processes characterised by the sequence of their steps
• CPC Class Codes: C22C 13/00 Alloys based on tin
• CPC Class Codes: C23C 14/16 on metallic substrates or on substrates of boron or silicon
• CPC Class Codes: C23C 14/30 by electron bombardment
• CPC Class Codes: C23C 14/3407 Cathode assembly for sputtering apparatus, e.g. Target
• CPC Class Codes: C23C 14/3464 using more than one target C23C14/56 takes precedence
• CPC Class Codes: C23C 14/46 by ion beam produced by an external ion source
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/0562 Solid materials
• CPC Class Codes: H01M 2004/027 Negative electrodes
• CPC Class Codes: H01M 2300/0068 inorganic
• CPC Class Codes: H01M 4/0421 involving vapour deposition
• CPC Class Codes: H01M 4/0426 Sputtering
• CPC Class Codes: H01M 4/1395 of electrodes based on metals, Si or alloys
• CPC Class Codes: H01M 4/38 of elements or alloys
• CPC Class Codes: H01M 4/387 Tin or alloys based on tin
• CPC Class Codes: H01M 4/505 of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
• CPC Class Codes: H01M 4/525 of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
• CPC Class Codes: H01M 6/40 Printed batteries , e.g. thin film batteries
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries
• CPC Class Codes: Y02P 70/50 : Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y10T 29/49115 : including coating or impregnating

Abstract

A n anode thin film for a lithium secondary battery having a current collector and an anode active material layer formed thereon, wherein the anode active material layer contains an intermetallic compound of tin (Sn) and nickel (Ni). In particular, the intermetallic compound is Ni₃Sn₄.

Claims

1. An anode thin film for a lithium secondary battery having a current collector and an anode active material layer formed thereon, wherein the anode active material layer contains an intermetallic compound of tin (Sn) and nickel (Ni).

2. The anode thin film of claim 1, wherein the intermetallic compound is Ni₃Sn₄.

3. A method of preparing an anode thin film of claim 1 by mosaic-sputtering tin (Sn) and metallic nickel (Ni).

4. The method of claim 3, wherein the intermetallic compound is Ni₃Sn₄.

5. A method of preparing an anode thin film of claim 1 by co-sputtering tin (Sn) and metallic nickel (Ni).

6. The method of claim 5, wherein the intermetallic compound is Ni₃Sn₄.

7. A method of preparing an anode thin film of claim 1 by sputtering a single target containing tin (Sn) and metallic nickel (Ni).

8. The method of claim 7, wherein the intermetallic compound is Ni₃Sn₄.

9. A method of preparing an anode thin film of claim 1 by forming an intermetallic compound evaporation source of tin (Sn) and metallic nickel (Ni) by a mechanical alloying method and depositing the intermetallic compound evaporation source by at least selected from the group consisting of e-beam evaporation and ion beam assisted deposition (IBAD).

10. The method of claim 9, wherein the intermetallic compound is Ni₃Sn₄.

11. A lithium secondary battery employing an anode thin film having a current collector and an anode active material layer formed thereon, wherein the anode active material layer contains an intermetallic compound of tin (Sn) and nickel (Ni).

12. The lithium secondary battery of claim 11, wherein the intermetallic compound is Ni₃Sn₄.

13. The lithium secondary battery of claim 11, wherein the battery is a thin film battery.