Hydrogen evolution reaction catalysis
US-2015259810-A1 · Sep 17, 2015 · US
Non-precious metal based water electrolysis catalyst for oxygen evolution at anode and hydrogen evolution at cathode and preparation method of the same
US9751078B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9751078-B2 |
| Application number | US-201514921567-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 23, 2015 |
| Priority date | Jan 9, 2015 |
| Publication date | Sep 5, 2017 |
| Grant date | Sep 5, 2017 |
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Abstract
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Disclosed is a non-precious metal based water electrolysis catalyst represented by CoX/C (X is at least one selected from the group consisting of P, O, B, S and N) for evolution of hydrogen and oxygen at a cathode and anode, respectively, at the same time, the catalyst including a cobalt-containing compound fixed to a carbon carrier.
First claim
Opening claim text (preview).
What is claimed is: 1. A non-precious metal based water electrolysis catalyst represented by the following Chemical Formula 1 for evolution of hydrogen and oxygen at a cathode and anode, respectively, the catalyst comprising a cobalt-containing compound fixed to a carbon carrier: CoX/C [Chemical Formula 1] wherein X is at least one selected from the group consisting of P, O, B, S and N, wherein the cobalt-containing compound is nanoparticles surrounded with an amorphous layer having a thickness of 0.1-7 nm, and the amorphous layer comprises Co, X and O. 2. The non-precious metal based water electrolysis catalyst according to claim 1 , wherein X in the above formula is at least one selected from the group consisting of P, B, S and N. 3. The non-precious metal based water electrolysis catalyst according to claim 1 , wherein X in the above formula is P. 4. The non-precious metal based water electrolysis catalyst according to claim 1 , wherein the cobalt-containing compound is nanoparticles having a particle size of 5-100 nm. 5. The non-precious metal based water electrolysis catalyst according to claim 1 , wherein the cobalt-containing compound is nanoparticles having a particle size of 5-30 nm. 6. The non-precious metal based water electrolysis catalyst according to claim 1 , wherein the cobalt-containing compound further has oxide of X on the surface thereof. 7. The non-precious metal based water electrolysis catalyst according to claim 1 , wherein the cobalt-containing compound has phosphate on the surface thereof. 8. The non-precious metal based water electrolysis catalyst according to claim 1 , which is used in an alkaline solvent. 9. The non-precious metal based water electrolysis catalyst according to claim 1 , which has cobalt having an oxidation number of 3 or more through activation at the oxidation potential. 10. The non-precious metal based water electrolysis catalyst according to claim 1 , which is porous and has a nanoweb structure.
Assignees
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Classifications
Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title
Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat) · CPC title
- B01J23/75Primary
Cobalt · CPC title
- B01J27/1853Primary
with iron, cobalt or nickel · CPC title
- C25B1/02Primary
Hydrogen or oxygen · CPC title
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- What does patent US9751078B2 cover?
- Disclosed is a non-precious metal based water electrolysis catalyst represented by CoX/C (X is at least one selected from the group consisting of P, O, B, S and N) for evolution of hydrogen and oxygen at a cathode and anode, respectively, at the same time, the catalyst including a cobalt-containing compound fixed to a carbon carrier.
- Who is the assignee on this patent?
- Korea Inst Sci & Tech
- What technology area does this patent fall under?
- Primary CPC classification B01J23/75. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Sep 05 2017 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).