Self supporting structurally engineered non-platinum electrocatalyst for oxygen reduction in fuel cells
US7678728B2 · kind B2 · utility
36Cited by
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17Claims
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Key dates
| Filing date | Oct 16, 2007 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Oct 16, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A highly dispersed, unsupported, electrocatalyst made of pyrolyzed porphyries and a method for synthesizing the same. The disclosed synthesis procedure allows for optimization of pore size and therefore transport properties. Compounds suitable for use include transition metal N4-chelates such as, but not necessarily limited to, N4-chelates containing different metal centers including Co, Fe, Mn, Ni, Ru, Cu, etc., and other N4-chelates such as porphyrin, phthalocyanies, and structures based on their pyro products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.