Fuel cells and fuel cell catalysts incorporating a nanoring support
US8133637B2 · kind B2 · utility
3Cited by
25References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2005 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | May 28, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/779
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The fuel cells include electrode membrane assemblies having a nanoparticle catalyst supported on carbon nanorings. The carbon nanorings are formed from one or more carbon layers that form a wall that defines a generally annular nanostructure having a hole. The length of the nanoring is less than or about equal to the outer diameter thereof. The nanorings exhibit high surface area, high porosity, high graphitization, and/or facilitate mass transfer and electron transfer in fuel cell reactions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.