Cation-conductive conformal ultrathin polymer electrolytes

Patent metadata

Field	Value
Publication number	US-10497939-B2
Application number	US-201414527058-A
Country	US
Kind code	B2
Filing date	Oct 29, 2014
Priority date	Oct 29, 2013
Publication date	Dec 3, 2019
Grant date	Dec 3, 2019

Abstract

A composite having an electrically conductive substrate and a polymer derived from a vinyl-containing siloxane monomer coating on the substrate. A method of electropolymerizing a vinyl-containing siloxane monomer to form a coating on an electrically conductive substrate.

First claim

What is claimed is:

1. A composite comprising:
an electrically conductive substrate; and
a coating comprising poly(1,3,5-trivinyl-1,3,5-trimethylcyclotrisiloxane) that is capable of ionic conductivity covalently bound to at least a portion of the substrate.

2. The composite of claim 1 , wherein the polymer is made by self-limiting electropolymerization.

3. The composite of claim 1 , wherein the polymer is electrografted to the substrate.

4. The composite of claim 1 , wherein the substrate is planar.

5. The composite of claim 4 , wherein the substrate comprises carbon, copper, nickel, aluminum, tin, zinc, or an alloy or mixture thereof.

6. The composite of claim 1 ;
wherein the substrate comprises pores; and
wherein the coating does not completely fill or obstruct a majority of the pores.

7. The composite of claim 6 , wherein the substrate comprises carbon-coated silica or copper.

8. The composite of claim 6 , wherein the substrate comprises a zinc sponge.

9. The composite of claim 6 , wherein the coating has an average thickness of no more than 500 nm.

10. The composite of claim 6 ;
wherein the substrate further comprises a first material capable of cation insertion or lithiation; and
wherein the first material does not completely fill or obstruct a majority of the pores.

11. A battery comprising:
a negative electrode comprising the composition of claim 10 ; and
a positive electrode comprising a second material capable of cation insertion or lithiation within at least a portion of the pores and in contact with the coating.

12. A battery comprising:
a negative electrode comprising the composition of claim 6 ; and
a positive electrode comprising a material capable of cation insertion or lithiation within at least a portion of the pores and in contact with the coating.

13. A method comprising:
providing an electrically conductive substrate; and
electropolymerizing 1,3,5-trivinyl-1,3,5-trimethylcyclotrisiloxane to form a coating that is capable of ionic conductivity covalently bound to at least a portion of the substrate.

14. The method of claim 13 , wherein the electropolymerization is self-limiting electropolymerization.

15. The method of claim 13 , wherein the electropolymerization electrografts the polymer to the substrate.

16. The method of claim 13 , wherein the substrate is planar.

17. The method of claim 16 , wherein the substrate comprises carbon, copper, nickel, aluminum, tin, zinc, or an alloy or mixture thereof.

18. The method of claim 13 ;
wherein the substrate comprises pores; and
wherein the coating does not completely fill or obstruct a majority of the pores.

19. The method of claim 18 , wherein the substrate comprises carbon-coated silica or copper.

20. The method of claim 18 , wherein the substrate comprises a zinc sponge.

21. The method of claim 18 , wherein the coating has an average thickness of no more than 500 nm.

22. The method of claim 18 , wherein the substrate further comprises a first material capable of cation insertion or lithiation.

23. A method comprising:
providing the battery of claim 11 ;
forming electrical connections between an electrical load and the first material and the second material; and
allowing electricity to flow through the electrical connections and the electrical load.

24. The method of claim 18 , further comprising:
infiltrating at least a portion of the pores with a second material capable of cation insertion or lithiation in contact with the coating.

25. A method comprising:
providing the battery of claim 12 ;
forming electrical connections between an electrical load and the substrate and the material; and
allowing electricity to flow through the electrical connections and the electrical load.

26. The composite of claim 1 , wherein the coating comprises cations.

27. The composite of claim 1 , wherein the coating comprises lithium ions.

Assignees

• Sassin Megan B
• Long Jeffrey W
• Rolison Debra R
• Us Gov Sec Navy

Inventors

• Sassin Megan B
• Long Jeffrey W
• Rolison Debra R

Classifications

• H01M4/366

  as layered products · CPC title

• H01M4/624 Primary

  Electric conductive fillers · CPC title

• H01M4/0466

  Electrochemical polymerisation · CPC title

• H01M4/622

  being polymers · CPC title

• H01M4/66

  Selection of materials · CPC title