Manufacturing method of metal catalyst-supporting carrier, metal catalyst-supporting carrier, manufacturing method of fuel cell and catalyst supporting device
US9692059B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 2012 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Nov 21, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a technique that suppresses a variation in particle diameter of a metal catalyst in the process of supporting the metal catalyst on a carrier. A CNT substrate having carbon nanotubes (CNTs) as the carrier arrayed thereon is placed in a processing chamber. Carbon dioxide is supplied to the processing chamber. After the carbon dioxide in the processing chamber is made supercritical, a complex solution in which a platinum complex is dissolved is supplied to the processing chamber. A sample temperature denoting temperature of the CNTs is controlled to be higher than an ambient temperature in the processing chamber. The CNT substrate is heated, such that a temperature difference between the ambient temperature and the sample temperature repeats increasing and decreasing. After the state of the supercritical fluid is changed to a non-supercritical state, the CNT substrate is heated, so as to cause the metal catalyst to deposit on the surface of the CNTs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.