Cathode material and fuel cell
US-2015349349-A1 · Dec 3, 2015 · US
Ceramic composite for fuel cell anode and method for preparing the same
US2020119366A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020119366-A1 |
| Application number | US-201916712272-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 12, 2019 |
| Priority date | Jun 15, 2016 |
| Publication date | Apr 16, 2020 |
| Grant date | — |
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Abstract
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A ceramic composite for a fuel cell anode is disclosed. A method for preparing the metal-ceramic composite for a fuel cell anode, the metal-ceramic composite including (i) metal catalyst nanoparticles and (ii) a mixed-conductive ceramic, comprising (A) co-depositing a metal catalyst raw material and a mixed-conductive ceramic by physical vapor deposition. The metal catalyst raw material is present in an amount such that the content of the metal catalyst nanoparticles in the metal-ceramic composite is significantly lower than in conventional metal-ceramic composites. The presence of a small amount of the metal catalyst nanoparticles in the metal-ceramic composite minimizes the occurrence of stress resulting from a change in the volume of the metal catalyst and provides a solution to the problem of defects, achieving improved life characteristics. Also disclosed is a method for preparing the metal-ceramic composite.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for preparing the metal-ceramic composite for a fuel cell anode, the metal-ceramic composite comprising (i) metal catalyst nanoparticles and (ii) a mixed-conductive ceramic, comprising (A) co-depositing a metal catalyst raw material and a mixed-conductive ceramic by physical vapor deposition. 2 . The method according to claim 1 , wherein the metal catalyst nanoparticles are present in an amount of 1 to 5% by volume, based on the total volume of the metal-ceramic composite. 3 . The method according to claim 2 , wherein the metal catalyst raw material is an oxide of at least one transition metal selected from Fe, Co, Ni, Cu, Ru, Rh, Pd, and Ag 4 . The method according to claim 2 , wherein the mixed-conductive ceramic is selected from gadolinium-doped ceria (GDC), samarium-doped ceria (SDC), yttria-doped bismuth oxide (YDB), and mixtures thereof. 5 . The method according to claim 2 , wherein no annealing is conducted after the co-depositing.
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Classifications
Noble metals · CPC title
Bismuth oxides, bismuthates or oxide forming salts thereof, e.g. zinc bismuthate · CPC title
based on zinc, tin, or bismuth oxides or solid solutions thereof with other oxides, e.g. zincates, stannates or bismuthates · CPC title
Cerium oxides or oxide-forming salts thereof · CPC title
Catalytic material supported on carriers, e.g. powder carriers (H01M4/8807, H01M4/881, H01M4/8814, H01M4/925 take precedence) · CPC title
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- What does patent US2020119366A1 cover?
- A ceramic composite for a fuel cell anode is disclosed. A method for preparing the metal-ceramic composite for a fuel cell anode, the metal-ceramic composite including (i) metal catalyst nanoparticles and (ii) a mixed-conductive ceramic, comprising (A) co-depositing a metal catalyst raw material and a mixed-conductive ceramic by physical vapor deposition. The metal catalyst raw material is pres…
- Who is the assignee on this patent?
- Korea Inst Sci & Tech
- What technology area does this patent fall under?
- Primary CPC classification H01M8/1246. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Apr 16 2020 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).