Electrolyte solution and method for producing same, continuously dissolving facility, electrolyte membrane, electrode catalyst layer, membrane electrode assembly and fuel cell
US-2016141696-A1 · May 19, 2016 · US
Electrode, membrane electrode assembly, electrochemical cell, and stack
US2017130348A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017130348-A1 |
| Application number | US-201615262106-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 12, 2016 |
| Priority date | Nov 10, 2015 |
| Publication date | May 11, 2017 |
| Grant date | — |
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Abstract
Official abstract text for this publication.
An electrode includes a base material, and a catalyst layer provided on the base material, the catalyst layer including a plurality of catalyst units having a porous structure. The catalyst layer has a first catalyst layer provided near the base material, the first catalyst layer including a plurality of the catalyst units dispersed at a first dispersion degree. The catalyst layer has a second catalyst layer provided above the first catalyst layer, the second catalyst layer including a plurality of the catalyst units dispersed at a second dispersion degree. The second dispersion degree is different from the first dispersion degree.
First claim
Opening claim text (preview).
What is claimed is: 1 . An electrode comprising: a base material; and a catalyst layer provided on the base material, the catalyst layer including a plurality of catalyst units having a porous structure, wherein the catalyst layer has a first catalyst layer provided near the base material, the first catalyst layer including a plurality of the catalyst units dispersed at a first dispersion degree, and a second catalyst layer provided above the first catalyst layer, the second catalyst layer including a plurality of the catalyst units dispersed at a second dispersion degree, and wherein the second dispersion degree is different from the first dispersion degree. 2 . The electrode according to claim 1 , wherein the second dispersion degree is higher than the first dispersion degree. 3 . The electrode according to claim 1 , wherein the catalyst layer has an intermediate layer between the first catalyst layer and the second catalyst layer. 4 . The electrode according to claim 1 , wherein the catalyst layer has a porosity of not less than 50 vol % and not more than 95 vol %. 5 . The electrode according to claim 1 , wherein an average distance between the catalyst units in the second catalyst layer is not less than 30 nm and not more than 2000 nm. 6 . The electrode according to claim 1 , wherein the catalyst units of the first catalyst layer include at least one of iridium oxide, ruthenium oxide, tantalum oxide, titanium oxide, platinum, and platinum oxide. 7 . The electrode according to claim 1 , wherein an average height of the catalyst units of the second catalyst layer is not less than 30 nm and not more than 1000 nm. 8 . The electrode according to claim 1 , wherein not less than 50 vol % of the catalyst units of the second catalyst layer is platinum, and not less than 60 vol % of the catalyst units of the first catalyst layer is iridium oxide. 9 . A membrane electrode assembly comprising the electrode according to claim 1 and a electrolyte membrane. 10 . The assembly according to claim 9 , wherein the second catalyst layer exists between the first catalyst layer and the electrolyte membrane. 11 . The assembly according to claim 9 , wherein the electrolyte membrane is in physical contact with the second catalyst layer. 12 . An electrochemical cell comprising the membrane electrode assembly according to claim 9 . 13 . A stack including the electrochemical cell according to claim 12 .
Assignees
Inventors
Classifications
- C25B13/02Primary
characterised by shape or form · CPC title
- C25B11/0484Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C25B11/093Primary
at least one noble metal or noble metal oxide and at least one non-noble metal oxide · CPC title
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- What does patent US2017130348A1 cover?
- An electrode includes a base material, and a catalyst layer provided on the base material, the catalyst layer including a plurality of catalyst units having a porous structure. The catalyst layer has a first catalyst layer provided near the base material, the first catalyst layer including a plurality of the catalyst units dispersed at a first dispersion degree. The catalyst layer has a second …
- Who is the assignee on this patent?
- Toshiba Kk
- What technology area does this patent fall under?
- Primary CPC classification C25B13/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu May 11 2017 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).