Method of manufacturing electrode catalyst layer for fuel cell, and electrode catalyst layer for fuel cell
US10297837B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2015 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Jul 29, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.