Printed energy storage device

Patent metadata

Field	Value
Publication number	US-9397341-B2
Application number	US-201414249316-A
Country	US
Kind code	B2
Filing date	Apr 9, 2014
Priority date	Oct 10, 2012
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

An energy storage device includes a printed current collector layer, where the printed current collector layer includes nickel flakes and a current collector conductive carbon additive. The energy storage device includes a printed electrode layer printed over the current collector layer, where the printed electrode layer includes an ionic liquid and an electrode conductive carbon additive. The ionic liquid can include 1-ethyl-3-methylimidazolium tetrafluoroborate (C 2 mimBF 4 ). The current collector conductive carbon can include graphene and the electrode conductive carbon additive can include graphite, graphene, and/or carbon nanotubes.

First claim

What is claimed is:

1. An energy storage device, comprising:
a printed collector layer, wherein the printed current collector layer comprises nickel flakes and a current collector conductive carbon additive; and
a printed electrode layer printed over the current collector layer, wherein the printed electrode layer comprises an ionic liquid and an electrode conductive carbon additive,
wherein the ionic liquid includes a cation selected from the group consisting of 1-ethyl-3-methylimidazolium, butyltrimethylammonium, 1-butyl-3-methylimidazolium, 1-methyl-3-propylimidazolium, 1-hexyl-3-methylimidazolium, choline, ethylammonium, tributylmethylphosphonium, tributyl(tetradecyl)phosphonium, trihexyl(tetradecyl)phosphonium, 1-ethyl-2,3-methylimidazolium, 1-butyl-1-methylpiperidinium, diethylmethylsulfonium, 1-methyl-1-propylpiperidinium, 1-butyl-2-methylpyridinium, 1-butyl-4-methylpyridinium, and 1-butyl-1-methylpyrrolidinium, and
wherein the ionic liquid includes an anion selected from the group consisting of tetrafluoroborate, tris(pentafluoroethyl)trifluorophosphate, trifluoromethanesulfonate, hexafluorophosphate, ethyl sulfate, dimethyl phosphate, methansulfonate, triflate, tricyanomethanide, dibutylphosphate, bis(trifluoromethylsulfonyl)imide, bis-2,4,4-(trimethylpentyl)phosphinate, iodide, chloride, bromide, and nitrate.

2. The device of claim 1 , wherein the printed electrode layer comprises a printed anode electrode layer and the energy storage device comprises a zinc manganese dioxide battery.

3. The device of claim 1 , wherein the current collector conductive carbon additive comprises graphene.

4. The device of claim 1 , wherein the electrode conductive carbon additive comprises at least one of graphite, graphene, and carbon nanotubes.

5. The device of claim 4 , wherein the carbon nanotubes comprises multi-wall carbon nanotubes.

6. The device of claim 1 , wherein the printed current collector layer comprises a polyester component formed in-situ from a polycarboxylic component and a polyol component.

7. The device of claim 6 , wherein the polycarboxylic component comprises glutaric acid and the polyol component comprises ethylene glycol.

8. The device of claim 1 , further comprising an electrolyte comprising the ionic liquid.

9. The device of claim 8 , wherein the electrolyte further comprises zinc tetrafluoroborate.

10. A method of fabricating an energy storage device, comprising:
printing a current collector layer over a substrate, wherein the current collector layer comprises nickel flakes and a current collector conductive carbon additive; and
printing an electrode layer over the current collector layer, wherein the electrode layer comprises an ionic liquid and an electrode conductive carbon additive,
wherein the ionic liquid includes a cation selected from the group consisting of 1-ethyl-3-methylimidazolium, butyltrimethylammonium, 1-butyl-3-methylimidazolium, 1-methyl-3-propylimidazolium, 1-hexyl-3-methylimidazolium, choline, ethylammonium, tributylmethylphosphonium, tributyl(tetradecyl)phosphonium, trihexyl(tetradecyl)phosphonium, 1-ethyl-2,3-methylimidazolium, 1-butyl-1-methylpiperidinium, diethylmethylsulfonium, 1-methyl-1-propylpiperidinium, 1-butyl-2-methylpyridinium, 1-butyl-4-methylpyridinium, and 1-butyl-1-methylpyrrolidinium, and
wherein the ionic liquid includes an anion selected from the group consisting of tetrafluoroborate, tris(pentafluoroethyl)trifluorophosphate, trifluoromethanesulfonate, hexafluorophosphate, ethyl sulfate, dimethyl phosphate, methansulfonate, triflate, tricyanomethanide, dibutylphosphate, bis(trifluoromethylsulfonyl)imide, bis-2,4,4-(trimethylpentyl)phosphinate, iodide, chloride, bromide, and nitrate.

11. The method of claim 10 , wherein the energy storage device comprises a zinc manganese dioxide battery.

12. The method of claim 10 , wherein printing the current collector layer comprises mixing the nickel flakes and the current collector conductive carbon additive with a polycarboxylic acid and a polyol.

13. The method of claim 12 , wherein mixing comprises forming a polyester in-situ from the polycarboxylic acid and the polyol.

14. The method of claim 10 , further comprising providing a separator adjacent the electrode layer, wherein the separator comprises at least one of polypropylene, polyethylene, polytetrafluoroethylene, cellulose, and aramid.

15. The method of claim 14 , wherein the separator is a non-printed separator.

16. The method of claim 10 , wherein the current collector conductive carbon additive comprises graphene.

17. The method of claim 10 , wherein the electrode conductive carbon additive comprises at least one of graphite, graphene, and carbon nanotubes.

18. The method of claim 10 , wherein the ionic liquid comprises 1-ethyl-3-methylimidazolium tetrafluoroborate (C 2 mimBF 4 ).

19. The method of claim 10 , wherein printing the electrode layer comprises printing the electrode layer with the electrode conductive carbon additive at a concentration of 0.5 weight % to 5 weight %.

20. The method of claim 19 , wherein the electrode layer comprises an anode electrode layer.

21. The method of claim 10 , wherein printing the electrode layer comprises printing the electrode layer with the electrode conductive carbon additive at a concentration of 1.5 weight % to 24 weight %.

22. The method of claim 21 , wherein the electrode layer comprises a cathode electrode layer.

Assignees

• Nthdegree Tech Worldwide Inc

Inventors

• Lockett Vera N
• Daneshi Leila
• Ray William J
• Gustafson John G

Classifications

• H01M50/426

  Fluorocarbon polymers · CPC title

• H01M50/414

  Synthetic resins, e.g. thermoplastics or thermosetting resins · CPC title

• C07D233/58

  with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to ring nitrogen atoms · CPC title

• H01M6/166

  by the solute · CPC title

• H01M4/12

  of consumable metal or alloy electrodes (use of alloy compositions as active materials H01M4/38) · CPC title