Catalyst ink for forming electrode catalyst layer and method of producing membrane electrode assembly
US12418032B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 2022 |
| Grant date | Sep 16, 2025 |
| Priority date | — |
| Expiry date | Mar 4, 2044 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A catalyst ink which can be directly applied to a polymer electrolyte membrane without producing wrinkles or cracks in the catalyst layer and without lowering performance, and a membrane electrode assembly using the catalyst ink. The catalyst ink for an electrode catalyst layer includes a solvent. The solvent contains catalyst-supported carbon particles which are carbon particles supporting a catalyst, a polymer electrolyte, and at least one of carbon fibers and organic electrolyte fibers. The solvent has a particle size distribution which a first peak lies in a range of 0.1 μm or more and 1 μm or less, and a second peak lies in a range of 1 μm or more and 10 μm or less. The catalyst ink is directly applied to a polymer electrolyte membrane to produce a membrane electrode assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.