Battery having electrolyte including organoborate salt

• US 7,718,321 B2
• Filed: 10/21/2004
• Issued: 05/18/2010
• Est. Priority Date: 02/04/2004
• Status: Active Grant

• Current Assignee: Quallion, LLC (EnerSys)
• Original Assignee: Quallion, LLC (EnerSys)
• Inventors: Tsukamoto, Hisashi, Nakahara, Hiroshi, Yoon, Sang Young
• Primary Examiner(s): Ryan; Patrick
• Assistant Examiner(s): ANTHONY, JULIAN
• Application Number:
  US10/971,912
• Publication Number:
  US 20050170253A1
• Time in Patent Office: 2,035 Days
• Field of Search: 429/188, 429/212, 429/231.95, 429/302, 429/303, 429/344
• US Class Current: 429/302
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/0567 characterised by the additives
• CPC Class Codes: H01M 10/0568 characterised by the solutes
• CPC Class Codes: H01M 10/0569 characterised by the solvents
• CPC Class Codes: H01M 4/131 Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
• CPC Class Codes: H01M 4/133 Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
• CPC Class Codes: H01M 4/485 of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy H01M4/505, H01M4/525 take precedence
• CPC Class Codes: H01M 4/587 for inserting or intercalating light metals
• CPC Class Codes: H01M 50/109 of button or coin shape
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y10T 29/49108 Electric battery cell making

Abstract

The battery includes an electrolyte activating one or more cathodes and one or more anodes. The electrolyte includes one or more mono[bidentate]borate salts in a solvent. The solvent includes a silane or a siloxane. The mono[bidentate]borate salt can include a lithium dihalo mono[bidentate]borate such as lithium difluoro oxalatoborate (LiDfOB).

Claims

1. A battery, comprising:

an electrolyte activating one or more anodes and one or more cathodes, the electrolyte including one or more mono[bidentate]borate salts in a solvent, the solvent including a silane represented by SiR_4-x-yR′

_xR″

_y;

wherein R is an alkyl group, an aryl group or a halogen, R′

_x is represented by Formula VIII-A or Formula VIII-C, R″

_y is represented by Formula VIII-B, x is 0 to 4, y is 0 to 4, 4-x-y indicates the number of R substituents, and x+y is at least 1;

Formula VIII-A;

2. The battery of claim 1, wherein the one or more mono[bidentate]borate salts includes a dihalo mono[bidentate]borate.

3. The battery of claim 1, wherein the one or more mono[bidentate]borate salts include a lithium dihalo mono[bidentate]borate.

4. The battery of claim 1, wherein the one or more mono[bidentate]borate salts include lithium difluoro oxalatoborate (LiDfOB).

5. The battery of claim 4, wherein the electrolyte includes a disiloxane.

6. The battery of claim 1, wherein at least one of the one or more anodes includes two components selected from the group consisting of:

carbon beads, carbon fibers, and graphite flakes.

7. The battery of claim 1, wherein at least one of the one or more anodes includes a carbonaceous mixture that includes carbon beads, carbon fibers, and graphite flakes.

8. The battery of claim 1, wherein the electrolyte includes one or more organic solvents.

9. The battery of claim 1, wherein the electrolyte includes one or more disiloxanes.

10. The battery of claim 9, wherein the electrolyte includes one or more organic solvents.

11. The battery of claim 9, wherein at least one disiloxane includes a backbone with a silicon linked to one or more substituents that each include a poly(allylene oxide) moiety or a cyclic carbonate moiety.

12. The battery of claim 9, wherein at least one disiloxane is represented by:

13. The battery of claim 1, wherein the electrolyte includes one or more trisiloxanes.

14. The battery of claim 13, wherein the electrolyte includes one or more organic solvents.

15. The battery of claim 13, wherein at least one trisiloxane includes a backbone with three silicons, one or more of the silicons being linked to one or more substituents that each include a poly(alkylene oxide) moiety or a cyclic carbonate moiety.

16. The battery of claim 13, wherein at least one trisiloxane is represented by:

17. The battery of claim 13, wherein at least one trisiloxane is represented by:

18. The battery of claim 1, wherein the electrolyte includes one or more tetrasiloxanes.

19. The battery of claim 18, wherein at least one tetrasiloxane includes a backbone with four silicons, one or more of the silicons being linked to one or more substituents that each include a poly(alkylene oxide) moiety or a cyclic carbonate moiety.

20. The battery of claim 1, wherein the electrolyte includes one or more polysiloxanes.

21. The battery of claim 20, wherein at least one polysiloxane includes a backbone with five or more silicons, one or more of the silicons being linked to one or more substituents that each include a poly(alkylene oxide) moiety or a cyclic carbonate moiety.

22. The battery of claim 1, wherein x is 1 to 3.

23. The battery of claim 1, wherein x is greater than 0.

24. The battery of claim 23, wherein R′

is represented by Formula VIII-A.

25. The battery of claim 24, wherein the silane is represented by:

26. A method of generating a battery, comprising:

generating an electrolyte including one or more mono[bidentate] borate salts in a solvent, the solvent including a silane represented by SiR_4-x-yR′

_xR″

_y;

wherein R is an alkyl group, an aryl group or a halogen, R′

_x, is represented by Formula VIII-A or Formula VIII-C, R″

_y is represented by Formula VIII-B, x is 0 to 4, y is 0 to 4, 4-x-y indicates the number of R substituents, and x+y is at least 1;

Formula VIII-A;