Redox flow batteries and compounds for battery application

Patent metadata

Field	Value
Publication number	US-11289729-B2
Application number	US-202016792501-A
Country	US
Kind code	B2
Filing date	Feb 17, 2020
Priority date	Aug 17, 2017
Publication date	Mar 29, 2022
Grant date	Mar 29, 2022

Abstract

The present disclosure relates to organic electrolyte solutions including organic electrolytes (e.g., aromatic imides, ferrocenes, spiro fused compounds, or cyclopropenium compounds), and redox flow batteries and systems including the same.

First claim

What is claimed is:

1. An energy storage medium comprising a charge storage material dissolved in an aqueous media, wherein
(i) the charge storage material comprises a perylene diimide core;
(ii) the charge storage material is in a 2-electron reduced state when the energy storage medium is fully charged; and
(iii) the charge storage material shows less than 1% degradation when stored for 11 days in a 2-electron reduced state.

2. The energy storage medium of claim 1 , wherein the perylene diimide core is covalently bound to a water solubilizing group.

3. The energy storage medium of claim 1 , wherein the aqueous media further comprises a redox couple of the charge storage material.

4. The energy storage media of claim 1 , further comprising a supporting electrolyte.

5. The energy storage medium of claim 1 , wherein one or both of the imide nitrogen atoms on the perylene diimide core are covalently bound to a quaternized aminoalkyl group.

6. The energy storage medium of claim 5 , wherein both imide nitrogen atoms on the perylene diimide core are covalently bound to a quaternized aminoalkyl group.

7. A redox flow battery comprising an energy storage medium of claim 1 .

8. The redox flow battery of claim 7 , further comprising an electrochemical cell comprising an anode chamber and a cathode chamber.

9. The redox flow battery of claim 8 , wherein the charge storage material comprising the perylene diimide is an anolyte.

10. The redox flow battery of claim 9 , wherein the anolyte is in a first tank.

11. The redox flow battery of claim 10 , further comprising a second tank that comprises a catholyte that includes a redox-active compound dissolved in a second aqueous media, wherein during operation, the anolyte from the first tank flows into the anode chamber of the electrochemical cell and the catholyte from the second tank flows into the cathode chamber of the electrochemical cell.

12. The redox flow battery of claim 11 , wherein the redox-active compound of the catholyte includes a ferrocene moiety.

13. The redox flow battery of claim 11 , wherein the redox active compound of the catholyte is tetraferrocene.

14. The redox flow battery of claim 11 , wherein the anode chamber and cathode chamber further comprise a supporting electrolyte.

15. The redox flow battery of claim 11 , wherein one or both of nitrogen atoms of the perylene core are covalently bound to a quaternized aminoalkyl group.

16. The redox flow battery of claim 15 , wherein both of nitrogen atoms of the perylene core are covalently bound to a quaternized aminoalkyl group.

17. The redox flow battery of claim 11 , wherein the perylene diimide core is covalently bound to a water solubilizing group.

18. The redox flow battery of claim 11 , wherein the coulombic efficiency of the redox flow battery is greater than 99% over 500 charge and discharge cycles.

19. The redox flow battery of claim 16 , wherein the coulombic efficiency of the redox flow battery is greater than 99% over 500 charge and discharge cycles.

20. The redox flow battery of claim 17 , wherein the coulombic efficiency of the redox flow battery is greater than 99% over 500 charge and discharge cycles.

21. The energy storage medium of claim 1 , wherein the charge storage material shows less than 1% degradation when stored for 75 days in a 2-electron reduced state.

22. An energy storage medium comprising a charge storage material dissolved in an aqueous media, wherein
(i) the charge storage material comprises a perylene diimide core;
(ii) the charge storage material is in a 2-electron reduced state when the energy storage medium is fully charged; and
(iii) the charge storage material is stable for at least one year.

23. The energy storage medium of claim 22 , wherein one or both of nitrogen atoms of the perylene core are covalently bound to a quaternized aminoalkyl group.

24. The energy storage medium of claim 22 , wherein both of nitrogen atoms of the perylene core are covalently bound to a quaternized aminoalkyl group.

25. The energy storage medium of claim 22 , wherein the perylene diimide core is covalently bound to a water solubilizing group.

26. An energy storage medium comprising a charge storage material dissolved in an aqueous media, wherein
(i) the charge storage material comprises a perylene diimide core;
(ii) the charge storage material is in a 2-electron reduced state when the energy storage medium is fully charged; and
(iii) the charge storage material undergoes less than 1% decomposition upon storage for 500 hours at 50% or more state of charge.

27. The energy storage medium of claim 26 , wherein one or both of nitrogen atoms of the perylene core are covalently bound to a quaternized aminoalkyl group.

28. The energy storage medium of claim 26 , wherein both of nitrogen atoms of the perylene core are covalently bound to a quaternized aminoalkyl group.

29. The energy storage medium of claim 26 , wherein the perylene diimide core is covalently bound to a water solubilizing group.

30. A redox flow battery comprising an energy storage medium of claim 26 .

Assignees

• Univ Columbia

Inventors

• Nuckolls Colin
• Hernandez Sanchez Raul
• Yang Yuan
• Sisto Thomas
• Milton Margarita

Classifications

• H01M8/2435

  with monolithic core structure, e.g. honeycombs · CPC title

• H01M2300/0025

  Organic electrolyte · CPC title

• H01M8/20 Primary

  Indirect fuel cells, e.g. fuel cells with redox couple being irreversible (H01M8/18 takes precedence) · CPC title

• H01M8/188 Primary

  by recharging of redox couples containing fluids; Redox flow type batteries · CPC title

• H01M2300/0002

  Aqueous electrolytes · CPC title