Cathode, lithium air battery including the same, and method of preparing the cathode
US-2016079590-A1 · Mar 17, 2016 · US
Fuel cell
US10535882B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10535882-B2 |
| Application number | US-201815869949-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 12, 2018 |
| Priority date | Jul 27, 2016 |
| Publication date | Jan 14, 2020 |
| Grant date | Jan 14, 2020 |
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- Title
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Abstract
Official abstract text for this publication.
A fuel cell has an anode, a cathode, and a solid electrolyte layer. The cathode contains a main component containing a perovskite oxide which is expressed by the general formula ABO3 and includes at least one of La and Sr at the A site. The solid electrolyte layer is disposed between the anode and the cathode. The cathode includes an interface region that is within 5 μm from a surface near to the solid electrolyte layer. The interface region contains a main phase containing the perovskite oxide, and a secondary phase containing strontium oxide. An occupied surface area ratio of the secondary phase in a cross section of the interface region is greater than or equal 0.05% and less than or equal to 3%.
First claim
Opening claim text (preview).
What is claimed is: 1. A fuel cell comprising: an anode; a cathode containing a perovskite oxide of formula (1) as a main component, ABO 3 (1) wherein A includes at least one element selected from the group consisting of La and Sr and B includes at least one element selected from the group consisting of Fe, Co, Mn and Ni; and a solid electrolyte layer disposed between the anode and the cathode, wherein the cathode has an interface region that is within 5 μm from the cathode's nearest surface to the solid electrolyte layer and contains a main phase comprising the perovskite oxide and a secondary phase of strontium oxide and an occupied surface area ratio of the strontium oxide in a cross section of the interface region taken parallel to a thickness direction of the cathode is from 0.05-3%. 2. The fuel cell according to claim 1 , wherein an average equivalent circle diameter of the strontium oxide in the cross section of the interface region is from 10 to 500 nm.
Assignees
Inventors
Classifications
Submicron sized grains, i.e. from 0,1 to 1 micron · CPC title
Nickel oxides, nickalates, or oxide-forming salts thereof · CPC title
characterised by the electrode/electrolyte combination or the supporting material · CPC title
Perovskite structure ABO3 · CPC title
Yttrium oxide or oxide-forming salts thereof · CPC title
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- What does patent US10535882B2 cover?
- A fuel cell has an anode, a cathode, and a solid electrolyte layer. The cathode contains a main component containing a perovskite oxide which is expressed by the general formula ABO3 and includes at least one of La and Sr at the A site. The solid electrolyte layer is disposed between the anode and the cathode. The cathode includes an interface region that is within 5 μm from a surface near to t…
- Who is the assignee on this patent?
- Ngk Insulators Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/9033. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jan 14 2020 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).