Fluorinated coatings for high performance electrodes

Patent metadata

Field	Value
Publication number	US-10650981-B2
Application number	US-201615012089-A
Country	US
Kind code	B2
Filing date	Feb 1, 2016
Priority date	Jan 30, 2015
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

Disclosed herein is an electrode material comprising a carbon-containing substrate, comprising a surface and a plurality of R F moieties wherein each R F moiety is covalently bound to the surface; and each R F moiety comprises a fluorine atom. Also, disclosed herein is a method of preparing an electrode material.

First claim

The invention claimed is:

1. An electrode material, comprising:
a carbon-containing substrate, comprising a surface; and a plurality of R F moieties;
wherein each R F moiety is independently selected from aryl; each R F moiety is covalently bound to the surface; and each R F moiety comprises at least one fluorine atom.

2. The electrode material of claim 1 , wherein each R F moiety is independently selected from the group consisting of phenyl, naphthyl, tolyl, thienyl, and indolyl.

3. The electrode material of claim 1 , wherein each R F moiety is independently selected from the group consisting of perfluoroaryl.

4. The electrode material of claim 1 , wherein each R F moiety is independently selected from the group consisting of monofluorophenyl, difluorophenyl, trifluorophenyl, tetrafluorophenyl, perfluorophenyl, monofluoronaphthyl, difluoronaphthyl, trifluoronaphthyl, tetrafluoronaphthyl, pentafluoronaphthyl, hexafluoronaphthyl, and perfluoronaphthyl.

5. The electrode material of claim 4 , wherein each R F moiety is perfluorophenyl.

6. The electrode material of claim 1 , wherein the carbon-containing substrate comprises high-surface-area carbon.

7. The electrode material of claim 1 , wherein the carbon-containing substrate comprises glass-like carbon.

8. The electrode material of claim 1 , wherein the fluorine atoms in the plurality of R F moieties are less than 5% of the atoms in the electrode material.

9. A lithium ion battery, comprising the electrode material of claim 1 .

10. A redox flow battery, comprising the electrode material of claim 1 .

11. A fuel cell, comprising the electrode material of claim 1 .

12. A supercapacitor, comprising the electrode material of claim 1 .

13. The electrode material of claim 3 , wherein the carbon-containing substrate comprises high-surface-area carbon.

14. The electrode material of claim 3 , wherein the carbon-containing substrate comprises glass-like carbon.

15. The electrode material of claim 3 , wherein the fluorine atoms in the plurality of R F moieties are less than 5% of the atoms in the electrode material.

16. The electrode material of claim 5 , wherein the carbon-containing substrate comprises high-surface-area carbon.

17. The electrode material of claim 5 , wherein the carbon-containing substrate comprises glass-like carbon.

18. The electrode material of claim 5 , wherein the fluorine atoms in the plurality of R F moieties are less than 5% of the atoms in the electrode material.

Assignees

• Massachusetts Inst Technology

Inventors

• Surendranath Yogesh
• Kilyanek Stefan M
• Chu Sterling B

Classifications

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01G11/50

  specially adapted for lithium-ion capacitors, e.g. for lithium-doping or for intercalation · CPC title

• H01M4/96 Primary

  Carbon-based electrodes · CPC title

• H01G11/26

  characterised by their structure, e.g. multi-layered, porosity or surface features · CPC title

• H01M2008/1095

  Fuel cells with polymeric electrolytes · CPC title