Organic/inorganic nanocomposite capable of adsorption/desorption of metal ions, and preparation method thereof
US-2015021511-A1 · Jan 22, 2015 · US
Catalyst for oxygen reduction reaction and preparation method of the same
US10144993B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10144993-B2 |
| Application number | US-201514918486-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 20, 2015 |
| Priority date | Jan 29, 2015 |
| Publication date | Dec 4, 2018 |
| Grant date | Dec 4, 2018 |
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Abstract
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Provided is a catalyst for oxygen reduction reaction comprising an alloy comprising at least one selected from Pt, Pd and Ir supported on a carbon carrier functionalized with poly(N-isopropylacrylamide) (PNIPAM). The catalyst for oxygen reduction reaction has electronic ensemble effects by virtue of the carbon carrier functionalized with poly(N-isopropylacrylamide) (PNIPAM), and thus shows improved oxygen reduction activity and durability as compared to conventional catalysts supported on carbon.
First claim
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What is claimed is: 1. A catalyst for oxygen reduction reaction, comprising an alloy comprising at least one selected from Pt, Pd, and Ir supported on a carbon carrier functionalized with poly(n-isopropylacrylamide) (PNIPAM); wherein the alloy is an alloy of a metal selected from the group consisting of Pt, Pd, and Ir with a transition metal selected from the group consisting of Co, Ni, Fe, Cu, Cr, and Mn; wherein a chemical bond between the transition metal and nitrogen of amide group of PNIPAM is formed on the surface of the alloy, and the chemical bond between the transition metal and nitrogen of amide group of PNIPAM prevents severe dissolution of the transition metal; and wherein the alloy comprising at least one selected from Pt, Pd, and Ir is present in an amount of 10-45 wt % based on the total weight of the catalyst; and wherein the alloy comprising at least one selected from Pt, Pd, and Ir is nanoparticles having a particle diameter 5-20 nm. 2. The catalyst for oxygen reduction reaction according to claim 1 , wherein the alloy comprising at least one selected from Pt, Pd, and Ir is nanoparticles. 3. The catalyst for oxygen reduction reaction according to claim 1 , which is represented by the following Chemical Formula 1 : XY/C-PNIPAM [Chemical Formula 1] wherein X is at least one selected from the group consisting of Pt, Pd, and Ir, Y is at least one selected from the group consisting of Co, Ni, Fe, Cu, Cr, and Mn, C is carbon, and PNIPAM is poly(N-isopropylacrylamide).
Assignees
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Classifications
- C22C5/04Primary
Alloys based on a platinum group metal · CPC title
Nanosized particles · CPC title
Aspects linked to processes or compositions used in powder metallurgy · CPC title
Fuel cells · CPC title
Fuel cells with polymeric electrolytes · CPC title
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- What does patent US10144993B2 cover?
- Provided is a catalyst for oxygen reduction reaction comprising an alloy comprising at least one selected from Pt, Pd and Ir supported on a carbon carrier functionalized with poly(N-isopropylacrylamide) (PNIPAM). The catalyst for oxygen reduction reaction has electronic ensemble effects by virtue of the carbon carrier functionalized with poly(N-isopropylacrylamide) (PNIPAM), and thus shows impr…
- Who is the assignee on this patent?
- Korea Inst Sci & Tech
- What technology area does this patent fall under?
- Primary CPC classification C22C5/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 04 2018 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).