Small organic molecule based flow battery
US-9966622-B2 · May 8, 2018 · US
Flow battery with electrolyte rebalancing system
US10840532B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10840532-B2 |
| Application number | US-201815882032-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 29, 2018 |
| Priority date | Jan 27, 2017 |
| Publication date | Nov 17, 2020 |
| Grant date | Nov 17, 2020 |
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- Title
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- Abstract
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Abstract
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The present invention relates to flow battery systems including a flow battery and an electrolyte rebalancing system. In accordance with certain embodiments, the electrolytes used in the systems of the present invention are aqueous, and in one embodiment, bromine species are used as redox-active species.
First claim
Opening claim text (preview).
What is claimed is: 1. A redox flow battery system comprising: a redox flow battery having a first electrolyte in a first reservoir, the first electrolyte comprising a first redox-active species, a second electrolyte in a second reservoir, the second electrolyte comprising a second redox-active species, and a battery cell having a first compartment in fluid communication with the first reservoir, a second compartment in fluid communication with the second reservoir, an ion permeable membrane separating the first and second compartments, a first electrode in contact with the first compartment, and a second electrode in contact with the second compartment, wherein the first redox-active species is capable of crossing the membrane and contaminating the second electrolyte; and an electrolyte rebalancing system in fluid communication with the second reservoir, wherein the electrolyte rebalancing system is configured to reduce the amount of first redox-active species contaminating the second electrolyte, and wherein the electrolyte rebalancing system is configured to return the first redox-active species to the first reservoir. 2. The system of claim 1 , wherein the electrolyte rebalancing system comprises a heating unit in fluid communication with the second reservoir and coupled to a condenser, wherein the condenser is in fluid communication with the first reservoir and the second reservoir. 3. The system of claim 2 , wherein the electrolyte rebalancing system further comprises a heat exchanger, wherein the heat exchanger is in fluid communication with the second reservoir and the heating unit, and the condenser is in fluid communication with the first reservoir and the heat exchanger. 4. The system of claim 1 , wherein the first redox-active species comprises bromine or bromide. 5. The system of claim 2 , wherein the heating unit is maintained at below the boiling point of an H 2 O—HBr azeotrope at a given pressure of the heating unit. 6. The system of claim 5 , wherein the bromine or bromide in the first electrolyte is in a concentration of up to 17 mol %. 7. The system of claim 6 , wherein the bromine or bromide in the first electrolyte is in a concentration of between about 4 mol % and 8 mol %.
Assignees
Inventors
Classifications
Arrangements for managing the electrolyte stream, e.g. heat exchange · CPC title
Indirect fuel cells, e.g. fuel cells with redox couple being irreversible (H01M8/18 takes precedence) · CPC title
Acid electrolytes · CPC title
related to heat exchange · CPC title
- H01M8/188Primary
by recharging of redox couples containing fluids; Redox flow type batteries · CPC title
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Frequently asked questions
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- What does patent US10840532B2 cover?
- The present invention relates to flow battery systems including a flow battery and an electrolyte rebalancing system. In accordance with certain embodiments, the electrolytes used in the systems of the present invention are aqueous, and in one embodiment, bromine species are used as redox-active species.
- Who is the assignee on this patent?
- Harvard College
- What technology area does this patent fall under?
- Primary CPC classification H01M8/188. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 17 2020 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 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).