Electrolyte including silane for use in electrochemical devices

• US 9,786,954 B2
• Filed: 05/20/2014
• Issued: 10/10/2017
• Est. Priority Date: 02/04/2004
• Status: Active Grant

• Current Assignee: Hiroshi Nakahara, Khalil Amine, Nicholas A.A. Rossi, Qingzheng Wang, Robert C. West, Sang Young Yoon, Zhengcheng Zhang
• Original Assignee: Hiroshi Nakahara, Khalil Amine, Nicholas A.A. Rossi, Qingzheng Wang, Robert C. West, Sang Young Yoon, Zhengcheng Zhang
• Inventors: West, Robert C., Amine, Khalil, Zhang, Zhengcheng, Wang, Qingzheng, Rossi, Nicholas A. A., Yoon, Sang Young, Nakahara, Hiroshi
• Primary Examiner(s): PARK GEHRKE, LISA S
• Application Number:
  US14/282,328
• Publication Number:
  US 20140342244A1
• Time in Patent Office: 1,239 Days
• CPC Class Codes: H01G 11/54 Electrolytes
• CPC Class Codes: H01G 11/56 Solid electrolytes, e.g. gels; Additives therein
• CPC Class Codes: H01G 9/0036 Formation of the solid electrolyte layer
• CPC Class Codes: H01G 9/025 Solid electrolytes H01G11/54 takes precedence
• CPC Class Codes: H01G 9/15 Solid electrolytic capacitors H01G11/00 takes precedence
• CPC Class Codes: H01G 9/2009 Solid electrolytes
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/0569 characterised by the solvents
• CPC Class Codes: H01M 2300/0028 characterised by the solvent
• CPC Class Codes: H01M 2300/0037 Mixture of solvents
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

The electrolyte includes one or more salts and a silane. The silane has a silicon linked to one or more first substituents that each include a poly(alkylene oxide) moiety or a cyclic carbonate moiety. The silane can be linked to four of the first substituents. Alternately, the silane can be linked to the one or more first substituents and one or more second substituents that each exclude both a poly(alkylene oxide) moiety and a cyclic carbonate moiety.

Claims

1. An electrochemical device comprising:

an electrolyte including one or more salts and a silane, the silane having a silicon linked to one or more substituents that include a poly(alkylene oxide) moiety, and wherein at least one of the one or more substituents includes a spacer positioned between the poly(alkylene oxide) moiety and the silicon, wherein the silane is represented by;

2. The device of claim 1, wherein n is 1.

3. The device of claim 1, wherein n is 2.

4. The device of claim 1, wherein n is 3.

5. The device of claim 1, wherein n is 4.

6. The device of claim 1, wherein n is 5.

7. The device of claim 1, wherein n is 6.

8. The device of claim 1, wherein n is 7.

9. The device of claim 1, wherein n is 8.

10. The device of claim 1, wherein n is 9.

11. The device of claim 1, wherein n is 10.

12. The device of claim 1, wherein n is 11.

13. The device of claim 1, wherein n is 12.

14. The device of claim 1, wherein n is 13.

15. The device of claim 1, wherein n is 14.

16. The device of claim 1, wherein n is 15.

17. The device of claim 1, wherein the salt comprises lithium.

18. The device of claim 1, wherein the salt is selected from the group consisting of LiClO₄, LiBF₄, LiAsF₆, LiPF₆, LiCF₃SO₃, Li(CF₃SO₂)₂N, Li(CF₃SO₂)₃C, LiN(SO₂C₂F₅)₂, lithium alkyl fluorophosphates, lithium bis(oxalate)borate (LiBOB) and lithium difluoro(oxalato)borate (LiDFOB).

19. The device of claim 1, wherein the salt is selected from the group consisting of lithium bis(oxalate)borate (LiBOB) and lithium difluoro(oxalato)borate (LiDFOB).