Decoupled electrode electrochemical energy storage system

Patent metadata

Field	Value
Publication number	US-2021351425-A1
Application number	US-202117313819-A
Country	US
Kind code	A1
Filing date	May 6, 2021
Priority date	May 6, 2020
Publication date	Nov 11, 2021
Grant date	—

Abstract

Systems and methods of the various embodiments may provide decoupled electrode electrochemical energy storage systems.

First claim

1 . An energy storage system, comprising:
a metal electrode vessel, the metal electrode vessel comprising a bed of metal; at least one other electrode; and a pump configured to move electrolyte between the metal electrode vessel and the at least one other electrode.

2 . The system of claim 1 , wherein the at least one other electrode comprises:
an oxygen reduction reaction (ORR) electrode; and an oxygen evolution reaction (OER) electrode, wherein the pump is configured to move electrolyte between the metal electrode vessel, the ORR electrode, and the OER electrode.

3 . The system of claim 2 , wherein the ORR electrode comprises a plate structure, a shell and tube structure, or a spiral wound structure.

4 . The system of claim 2 , wherein the ORR electrode is supplied with an oxygenated electrolyte stream, a mixed air and electrolyte stream, or separate air and electrolyte streams.

5 . The system of claim 2 , wherein the OER electrode is a vertical OER electrode or a horizontal OER electrode.

6 . The system of claim 1 , wherein the electrolyte is concentrated hydroxide electrolyte.

7 . The system of claim 1 , wherein the metal electrode is an iron electrode.

8 . The system of claim 7 , wherein the at least one other electrode comprises manganese.

9 . The system of claim 8 , wherein at least one other electrode comprises manganese dioxide, carbon, and a polymer binder.

10 . The system of claim 7 , wherein at least one other electrode comprises nickel.

11 . The system of claim 10 , wherein at least one other electrode comprises nickel, carbon, and a polymer binder.

12 . The system of claim 7 , wherein the iron electrode comprises direct reduced iron (DRI).

13 . The system of claim 7 , wherein the iron electrode comprises packed or sintered iron powder.

14 . The system of claim 13 , wherein the iron powder is sponge iron powder or atomized iron powder.

15 . The system of claim 7 , wherein the iron electrode comprises:
sponge iron powder and a polymer binder; or atomized iron powder and a polymer binder.

16 . The system of claim 15 , wherein the iron electrode is formed without carbon.

17 . The system of claim 15 , wherein the iron electrode further comprises carbon.

18 . An iron-air flow battery, comprising:
a fully open reactor through which iron materials and air are flowed.

19 . The iron-air flow battery of claim 18 , wherein the iron materials comprise direct reduced iron (DRI).

20 . The iron-air flow battery of claim 18 , wherein the iron materials comprise packed or sintered iron powder.

21 . The iron-air flow battery of claim 20 , wherein the iron powder is sponge iron powder or atomized iron powder.

22 . The iron-air flow battery of claim 18 , wherein the iron materials comprise:
sponge iron powder and a polymer binder; or atomized iron powder and a polymer binder.

23 . The iron-air flow battery of claim 22 , wherein the iron materials are do not include carbon.

24 . The iron-air flow battery of claim 22 , wherein the iron materials further comprise carbon.

25 . An energy storage system, comprising:
a metal flow passage; metal pellets; one or more air electrodes; and one or more separators configured to separate the metal flow passage from the one or more air electrodes, wherein the system is configured such that the metal pellets are flowed through the metal flow passage past the one or more air electrodes.

26 . The system of claim 25 , wherein the metal pellets comprise direct reduced iron (DRI).

27 . The system of claim 25 , further comprising one or more electrolyte flow passages, wherein the system is configured such that the one or more electrolyte flow passages flow electrolyte between the metal pellets and the one or more air electrodes.

28 . (canceled)

29 . (canceled)

Assignees

• Form Energy Inc

Inventors

• Smith Danielle Cassidy
• Woodford William Henry
• Milshtein Jarrod David
• Thompson Annelise
• Rousseau Alexandra
• Silver Jessa

Classifications

• H01M4/9016

  Oxides, hydroxides or oxygenated metallic salts · CPC title

• H01M2300/006

  Hydroxides · CPC title

• H01M8/146 Primary

  Fuel cells with molten hydroxide · CPC title

• H01M4/9041

  Metals or alloys (H01M4/92 takes precedence) · CPC title

• H01M4/96

  Carbon-based electrodes · CPC title