Electrochemical reaction device and electrochemical reaction method
US-2017247804-A1 · Aug 31, 2017 · US
Carbon dioxide reduction device
US12036526B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12036526-B2 |
| Application number | US-201917057532-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 17, 2019 |
| Priority date | May 22, 2018 |
| Publication date | Jul 16, 2024 |
| Grant date | Jul 16, 2024 |
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- Title
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Abstract
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Improvement in the efficiency of carbon dioxide reduction reaction is achieved. A gas supply unit having a plurality of pores is established in a lower portion of a reduction chamber, and carbon dioxide is supplied as bubbles into an aqueous solution. This can elevate a concentration of carbon dioxide dissolved in the aqueous solution without stirring the aqueous solution using a stirring bar, and render the concentration uniform in the aqueous solution. Therefore, the efficiency of reduction reaction of carbon dioxide in a reduction electrode can be improved.
First claim
Opening claim text (preview).
The invention claimed is: 1. A carbon dioxide reduction device which causes reduction reaction in a reduction electrode by applying current to between an oxidation electrode and the reduction electrode, the carbon dioxide reduction device comprising: an oxidation chamber for dipping and disposing the oxidation electrode in an aqueous solution; a reduction chamber for dipping and disposing the reduction electrode in an aqueous solution; a proton exchange membrane disposed between the oxidation chamber and the reduction chamber; and a gas supply unit disposed in a lower portion of the reduction chamber and having a plurality of pores for supplying carbon dioxide as bubbles into the aqueous solution, wherein a surface having the plurality of pores of the gas supply unit is disposed to face upward in the reduction chamber; and the reduction electrode is disposed such that a reaction surface faces the surface having the plurality of pores. 2. The carbon dioxide reduction device according to claim 1 , comprising a power source which applies current to between the oxidation electrode and the reduction electrode. 3. The carbon dioxide reduction device according to claim 1 , wherein the oxidation electrode causes oxidation reaction by exerting a catalytic function through light irradiation; and the carbon dioxide reduction device comprises a light source which irradiates a reaction surface of the oxidation electrode with light. 4. The carbon dioxide reduction device according to claim 2 , wherein the oxidation electrode causes oxidation reaction by exerting a catalytic function through light irradiation; and the carbon dioxide reduction device comprises a light source which irradiates a reaction surface of the oxidation electrode with light.
Assignees
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from carbon dioxide with hydrogen · CPC title
Incoherent waves · CPC title
Liquid · CPC title
with diaphragms · CPC title
- C25B3/26Primary
of carbon dioxide · CPC title
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- What does patent US12036526B2 cover?
- Improvement in the efficiency of carbon dioxide reduction reaction is achieved. A gas supply unit having a plurality of pores is established in a lower portion of a reduction chamber, and carbon dioxide is supplied as bubbles into an aqueous solution. This can elevate a concentration of carbon dioxide dissolved in the aqueous solution without stirring the aqueous solution using a stirring bar, …
- Who is the assignee on this patent?
- Nippon Telegraph & Telephone
- What technology area does this patent fall under?
- Primary CPC classification C25B3/26. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 16 2024 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).