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Redox flow batteries, components for redox flow batteries and methods for manufacture thereof

專利號(hào)
US11177498B1
公開(kāi)日期
2021-11-16
申請(qǐng)人
Ampcera Inc.(US CA Milpitas)
發(fā)明人
James Emery Brown; Hui Du; Chen Chen; Sumin Zhu
IPC分類(lèi)
H01M8/18; H01M8/0289; H01M8/1009
技術(shù)領(lǐng)域
ionic,scaffold,macro,membrane,conductive,porous,support,redox,be,catholyte
地域: CA CA Milpitas

摘要

A redox flow battery includes a positive terminal, a negative terminal, and a solid state ionic conductive membrane on a macro porous support scaffold between the positive terminal and the negative terminal.

說(shuō)明書(shū)

PRIORITY

The present invention claims the priority of U.S. Provisional Patent Application No. 62/745,510, filed Oct. 15, 2018, which is incorporated herein by reference in its entirety.

FIELD

The present application relates to the field of redox flow batteries, components for redox flow batteries, and methods for manufacturing components for redox flow batteries.

BACKGROUND

Redox flow batteries have been an emerging technology and energy back system for evolving smart grids. Redox flow batteries have an ion exchange membrane that allows for a charge balance across the system. However, current ion-exchange membranes are subject to crossover of the electrolytes which ultimately lowers the lifetime of the redox flow battery.

SUMMARY

To overcome the crossover issue associated with current ion-exchange membranes, thin solid state ionic conductive membranes have been proposed. However, the mechanical strength of these ionic conductive membranes is not enough to overcome the fluidic forces applied to the membrane during operation. To overcome this issue, macro porous support scaffolds can be used to help strengthen the ionic conductive membrane.

In an embodiment of the present disclosure, a redox flow battery includes a positive terminal, a negative terminal, and a solid state ionic conductive membrane on a macro porous support scaffold between the positive terminal and the negative terminal.

權(quán)利要求

1
What is claimed is:1. A redox flow battery, comprising:a positive terminal;a negative terminal; anda first solid state ionic conductive membrane supported by and in contact with a first macro porous support scaffold between the positive terminal and the negative terminal.2. A method of using the redox flow battery of claim 1, the method comprising:flowing an electrolyte through the first macro porous support scaffold; andpassing a ionic component of the electrolyte through the first solid state ionic conductive membrane.3. A component for a redox flow battery comprising a first solid state ionic conductive membrane fabricated directly on a first macro porous support scaffold.4. A method for manufacturing a component for a redox flow battery of claim 3, the method comprising:forming a solid state ionic conductive membrane on a support scaffold; andtreating the support scaffold to be macro porous after the forming step.5. The redox flow battery of claim 1, further comprising a second solid state ionic conductive membrane in contact with the first macro porous support scaffold opposite to the first solid state ionic conductive membrane.6. The method of claim 2, wherein the ionic component includes hydrogen ions, lithium ions, sodium ions, potassium ions, silver ions, magnesium ions, aluminum ions, or zinc ions.7. The component of claim 3, further comprising an interface layer directly on first solid state ionic conductive membrane.8. The component of claim 7, further comprising a lithium containing material directly on the interface layer.9. The redox flow battery of claim 1, wherein the first macro porous support scaffold comprises a planar-shaped macro porous support scaffold.10. The redox flow battery of claim 1, wherein the first macro porous support scaffold comprises a cylindrical-shaped macro porous support scaffold, wherein a cylindrical rod, serving as an electrode terminal, is positioned at the center of the cylindrical-shaped macro porous support scaffold.11. The redox flow battery of claim 1, wherein the first macro porous support scaffold comprises a tubular-shaped macro porous support scaffold, wherein the first solid-state ionic conductive membrane is supported on the inside surface and a second solid-state ionic conductive membrane is supported on the outside surface of the tubular shaped macro porous support scaffold.12. The method of claim 4, wherein the step of forming the solid state ionic conductive membrane on the support scaffold comprises at least one of slurry sedimentation, spraying, dipping, filtration, pyrolysis, electroplating, plasma spray, thermal spray, fume spray, screen printing, tape casting, injection, chemical vapor deposition, physical vapor deposition, and sputtering.13. The method of claim 4, wherein the step of treating the support scaffold to be macro porous comprises separating a filler material from the support scaffold.14. The method of claim 4, further comprising densifying the solid state ionic conductive membrane formed on the support scaffold.15. A redox flow battery, comprising:a positive current collector;a negative current collector;a first macro porous support scaffold between the positive current collector and the negative current collector; anda first solid state ionic conductive membrane formed on the first macro porous support scaffold.16. The redox flow battery of claim 15, further comprising a second macro porous support scaffold between the positive terminal and the negative terminal, wherein the first solid state ionic conductive membrane is between the first macro porous support scaffold and the second macro porous support scaffold.17. The redox flow battery of claim 15, further comprising a second macro porous support scaffold, wherein an electrode terminal is positioned between the first and second macro porous support scaffold, and wherein the first solid-state ionic conductive membrane is supported on an outer surface of both the first and second macro porous support scaffolds.18. The redox flow battery of claim 15, further comprising an outer catholyte tank and an anolyte tank in fluid communication with the first solid state ionic conductive membrane.19. The redox flow battery of claim 18, further comprising a pump for flowing catholyte from the outer catholyte tank through the first macro porous support scaffold and into fluid contact with the first solid-state ionic conductive membrane.20. The redox flow battery of claim 19, further comprising a pump for flowing anolyte from the outer anolyte tank through the second macro porous support scaffold and into fluid contact with the first solid-state ionic conductive membrane.
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