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Redox flow battery electrode, and redox flow battery
US2020403248A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020403248-A1 |
| Application number | US-201716482521-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 15, 2017 |
| Priority date | Jan 31, 2017 |
| Publication date | Dec 24, 2020 |
| Grant date | — |
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- Title
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Abstract
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A redox flow battery electrode includes an aggregate of a base containing carbon. When, on a cross section of the base, a circle that is centered at a center of gravity of the base and that has a diameter which is 95% of an isoarea equivalent circle diameter of the base is defined as a reference circle, the base includes a plurality of penetrating holes which extend from a surface toward an interior of the base and whose paths along extension directions of the penetrating holes are partially present within the reference circle.
First claim
Opening claim text (preview).
1 . A redox flow battery electrode comprising an aggregate of a base containing carbon, wherein when, on a cross section of the base, a circle that is centered at a center of gravity of the base and that has a diameter which is 95% of an isoarea equivalent circle diameter of the base is defined as a reference circle, the base includes a plurality of penetrating holes which extend from a surface toward an interior of the base and whose paths along extension directions of the penetrating holes are partially present within the reference circle. 2 . The redox flow battery electrode according to claim 1 , wherein the base includes a carbon fiber having the cross section with an isoarea equivalent circle diameter of 3 μm or more and 100 μm or less. 3 . The redox flow battery electrode according to claim 1 , wherein at least one of the plurality of penetrating holes has an opening on the surface of the base, the opening having an isoarea equivalent circle diameter of 50 nm or more and 2,000 nm or less. 4 . The redox flow battery electrode according to claim 1 , having a BET specific surface area of 0.1 m 2 /g or more. 5 . The redox flow battery electrode according to claim 1 , having a capacitance of 0.05 F/g or more. 6 . The redox flow battery electrode according to claim 1 , wherein at least one of the plurality of penetrating holes has a metal oxide at a bottom thereof. 7 . A redox flow battery that performs charging and discharging by supplying a positive electrolyte and a negative electrolyte to a battery cell that includes a positive electrode, a negative electrode, and a membrane disposed between the positive electrode and the negative electrode, wherein the positive electrode is the redox flow battery electrode according to claim 1 .
Assignees
Inventors
Classifications
Positive electrodes · CPC title
- H01M8/188Primary
by recharging of redox couples containing fluids; Redox flow type batteries · CPC title
- H01M4/8626Primary
characterised by the form · CPC title
- H01M4/96Primary
Carbon-based electrodes · CPC title
Fuel cells · CPC title
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- What does patent US2020403248A1 cover?
- A redox flow battery electrode includes an aggregate of a base containing carbon. When, on a cross section of the base, a circle that is centered at a center of gravity of the base and that has a diameter which is 95% of an isoarea equivalent circle diameter of the base is defined as a reference circle, the base includes a plurality of penetrating holes which extend from a surface toward an int…
- Who is the assignee on this patent?
- Sumitomo Electric Industries
- 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 Thu Dec 24 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).