Bipolar plate, cell frame, cell stack, and redox flow battery
US-2018277858-A1 · Sep 27, 2018 · US
Bipolar plate, cell frame, cell stack and redox flow battery
US2019379062A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019379062-A1 |
| Application number | US-201716479446-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 19, 2017 |
| Priority date | Jan 19, 2017 |
| Publication date | Dec 12, 2019 |
| Grant date | — |
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- Title
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Abstract
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A bipolar plate is disposed between a positive electrode and a negative electrode of a redox flow battery. The bipolar plate has, in a surface of the bipolar plate facing at least one of the positive electrode and the negative electrode, a plurality of grooves through which an electrolyte flows and a ridge positioned between the adjacent grooves. The bipolar plate includes rough surfaces which are disposed in at least parts of groove inner surfaces defining the respective grooves and surface roughness of which represented by arithmetic mean roughness Ra is 0.1 μm or larger.
First claim
Opening claim text (preview).
1 . A bipolar plate, wherein the bipolar plate is disposed between a positive electrode and a negative electrode of a redox flow battery, wherein the bipolar plate has, in a surface of the bipolar plate facing at least one of the positive electrode and the negative electrode, a plurality of grooves through which an electrolyte flows and a ridge positioned between the adjacent grooves, and wherein the bipolar plate includes rough surfaces which are disposed in at least parts of groove inner surfaces defining the respective grooves and surface roughness of which represented by arithmetic mean roughness Ra is 0.1 μm or larger. 2 . The bipolar plate according to claim 1 , wherein the surface roughness of the rough surfaces represented by the arithmetic mean roughness Ra is 25 μm or smaller. 3 . The bipolar plate according to claim 1 , further comprising: a rough surface which is disposed in at least part of a surface of the ridge and surface roughness of which represented by the arithmetic mean roughness Ra is 0.1 μm or larger. 4 . A cell frame comprising: the bipolar plate according to claim 1 ; and a frame body provided at an outer periphery of the bipolar plate. 5 . A cell stack comprising: the cell frame according to claim 4 . 6 . A redox flow battery comprising: the cell stack according to claim 5 .
Assignees
Inventors
Classifications
with sealing or supporting means in the form of a frame · CPC title
by recharging of redox couples containing fluids; Redox flow type batteries · CPC title
- H01M8/026Primary
characterised by grooves, e.g. their pitch or depth · CPC title
Details (electrodes H01M4/86 - H01M4/98) · CPC title
Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells · CPC title
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Frequently asked questions
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- What does patent US2019379062A1 cover?
- A bipolar plate is disposed between a positive electrode and a negative electrode of a redox flow battery. The bipolar plate has, in a surface of the bipolar plate facing at least one of the positive electrode and the negative electrode, a plurality of grooves through which an electrolyte flows and a ridge positioned between the adjacent grooves. The bipolar plate includes rough surfaces which …
- Who is the assignee on this patent?
- Sumitomo Electric Industries
- What technology area does this patent fall under?
- Primary CPC classification H01M8/026. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Dec 12 2019 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).