Fuel cell electrode catalyst protective layer forming method
US-12021245-B2 · Jun 25, 2024 · US
Method of manufacturing electrode catalyst layer for fuel cell, and electrode catalyst layer for fuel cell
US2016104896A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016104896-A1 |
| Application number | US-201514868631-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 29, 2015 |
| Priority date | Oct 14, 2014 |
| Publication date | Apr 14, 2016 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
There is provided a method of manufacturing an electrode catalyst layer for fuel cell. This manufacturing method comprises: (a) separating an ionomer solution by centrifugation into a supernatant that includes only an ionomer as a low molecular-weight component in the ionomer solution and a sediment including an ionomer as a high molecular-weight component having a higher molecular weight than that of the low molecular-weight component included in the supernatant; (b) using the ionomer included in the sediment as an ionomer for electrode catalyst layer and producing a catalyst ink that includes catalyst-supported particles with a catalyst metal supported thereon, a solvent and the ionomer for electrode catalyst layer; and (c) using the catalyst ink to form an electrode catalyst layer.
First claim
Opening claim text (preview).
What is claimed: 1 . A method of manufacturing an electrode catalyst layer for fuel cell, comprising: (a) separating an ionomer solution by centrifugation into a supernatant that includes only an ionomer as a low molecular-weight component in the ionomer solution and a sediment including an ionomer as a high molecular-weight component having a higher molecular weight than that of the low molecular-weight component included in the supernatant; (b) using the ionomer included in the sediment as an ionomer for electrode catalyst layer and producing a catalyst ink that includes catalyst-supported particles with a catalyst metal supported thereon, a solvent and the ionomer for electrode catalyst layer; and (c) using the catalyst ink to form an electrode catalyst layer. 2 . The method of manufacturing the electrode catalyst layer for fuel cell according to claim 1 , wherein a centrifugal force is set in a range of 600,000 to 750,000 G, a centrifugation time is set in a range of 50 to 100 minutes, and an environment temperature is set in a range of 15 to 35° C., as conditions of the centrifugation. 3 . An electrode catalyst layer for fuel cell, comprising an ionomer for electrode catalyst layer, and catalyst-supported particles with a catalyst metal supported thereon, wherein a ratio of a low molecular-weight component included in the ionomer for electrode catalyst layer is equal to or lower than a predetermined value.
Assignees
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Classifications
Manufacturing or production processes characterised by the final manufactured product · CPC title
- H01M4/8892Primary
Impregnation or coating of the catalyst layer, e.g. by an ionomer · CPC title
- H01M4/8828Primary
Coating with slurry or ink · CPC title
Fuel cells · CPC title
on carbon or graphite · CPC title
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- What does patent US2016104896A1 cover?
- There is provided a method of manufacturing an electrode catalyst layer for fuel cell. This manufacturing method comprises: (a) separating an ionomer solution by centrifugation into a supernatant that includes only an ionomer as a low molecular-weight component in the ionomer solution and a sediment including an ionomer as a high molecular-weight component having a higher molecular weight than …
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/8892. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Apr 14 2016 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).