Flow battery balancing cells having a bipolar membrane for simultaneous modification of a negative electrolyte solution and a positive electrolyte solution
US-2016308234-A1 · Oct 20, 2016 · US
Electrolyte balancing strategies for flow batteries
US11843147B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11843147-B2 |
| Application number | US-202117526671-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 15, 2021 |
| Priority date | Sep 25, 2013 |
| Publication date | Dec 12, 2023 |
| Grant date | Dec 12, 2023 |
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- Title
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Abstract
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The present invention is directed to a redox flow battery comprising at least one electrochemical cell in fluid communication with a balancing cell, said balancing cell comprising: a first and second half-cell chamber, wherein the first half-cell chamber comprises a first electrode in contact with a first aqueous electrolyte of the redox flow battery; and wherein the second half-cell chamber comprises a second electrode comprising a catalyst for the generation of O 2 ; and wherein the second half-cell chamber does not contain an aqueous electrolyte.
First claim
Opening claim text (preview).
What is claimed: 1. A redox flow battery comprising at least one electrochemical cell in fluid communication with a balancing cell, said balancing cell comprising: a first half-cell chamber and a second half-cell chamber separated by a membrane, wherein the first half-cell chamber comprises a first electrode in contact with a first aqueous electrolyte of the redox flow battery; and wherein the second half-cell chamber comprises a second electrode in contact with a second aqueous electrolyte, said second aqueous electrolyte having a pH of from 9 to 14, said second aqueous electrolyte being in fluid isolation from the redox flow battery, said second electrode abutting the membrane and said second electrode comprising a catalyst for the generation of O 2 ; said first aqueous electrolyte and said second aqueous electrolyte differing from one another in pH by from 1 to 8; wherein the balancing cell is configured to balance a state of charge of the first aqueous electrolyte and the second aqueous electrolyte, and wherein the membrane comprises: (1) a negatively charged ionomer; (2) a positively charged ionomer; (3) a bipolar membrane; or (4) a combination of (1) to (3).
Assignees
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Classifications
- H01M8/0693Primary
Treatment of the electrolyte residue, e.g. reconcentrating · CPC title
- H01M4/9016Primary
Oxides, hydroxides or oxygenated metallic salts · CPC title
Depolarisation · CPC title
having only carbon, e.g. polyarylenes, polystyrenes or polybutadiene-styrenes · CPC title
halogenated, e.g. sulfonated polyvinylidene fluorides · CPC title
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- What does patent US11843147B2 cover?
- The present invention is directed to a redox flow battery comprising at least one electrochemical cell in fluid communication with a balancing cell, said balancing cell comprising: a first and second half-cell chamber, wherein the first half-cell chamber comprises a first electrode in contact with a first aqueous electrolyte of the redox flow battery; and wherein the second half-cell chamber co…
- Who is the assignee on this patent?
- Lockheed Martin Energy Llc
- What technology area does this patent fall under?
- Primary CPC classification H01M8/0693. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 12 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).