Gas Diffusion Electrodes and Methods for Fabricating and Testing Same
US-2015376803-A1 · Dec 31, 2015 · US
Fuel cell catalyst, method of preparing same, and membrane-electrode assembly for fuel cell and fuel cell system including same
US9105936B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9105936-B2 |
| Application number | US-93668307-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 7, 2007 |
| Priority date | Nov 20, 2006 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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A fuel cell catalyst includes a platinum-iron (Pt—Fe) alloy having an ordered or disordered face-centered cubic structure or face-centered tetragonal structure. The face-centered cubic structure has a lattice constant ranging from about 3.820 Å to about 3.899 Å (or from about 3.862 Å to about 3.880 Å), and the face-centered tetragonal structure has a first lattice constant ranging from about 3.800 Å to about 3.880 Å (or from about 3.810 Å to about 3.870 Å) and a second lattice constant ranging from about 3.700 Å to about 3.810 Å (or from about 3.710 Å to about 3.800 Å). A membrane-electrode assembly can improve cell performance by including the above catalyst having the relatively high activity and selectivity for an oxidant reduction in at least one of an anode or a cathode, and can increase lifespan by inhibiting catalyst poisoning.
First claim
Opening claim text (preview).
What is claimed is: 1. A fuel cell catalyst comprising: an alloy having a face-centered cubic structure, the alloy consisting of platinum, iron and at least one transition metal (M) selected from the group consisting of Cr, Mn, Ni, W, and Ti, wherein the face-centered cubic structure has a lattice constant ranging from about 3.820 Å to about 3.899 Å. 2. The fuel cell catalyst of claim 1 , wherein the lattice constant of the face-centered cubic structure ra…
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Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Cross-Sectional Technologies · mapped topic
- H01M4/921Primary
Electricity · mapped topic
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- What does patent US9105936B2 cover?
- A fuel cell catalyst includes a platinum-iron (Pt—Fe) alloy having an ordered or disordered face-centered cubic structure or face-centered tetragonal structure. The face-centered cubic structure has a lattice constant ranging from about 3.820 Å to about 3.899 Å (or from about 3.862 Å to about 3.880 Å), and the face-centered tetragonal structure has a first lattice constant ranging from about 3.…
- Who is the assignee on this patent?
- Min Myoung-Ki, Park Chan-Hee, Kwak Chan, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification H01M4/921. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 11 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).