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Preparation and evaluation of advanced catalysts for phosphoric acid fuel cells
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Baris, J. Hockmuth, J. Stonehart, P. Pagliaro, P. |
| Copyright Year | 1984 |
| Description | The platinum electrocatalysts were characterized for their crystallite sizes and the degree of dispersion on the carbon supports. One application of these electrocatalysts was for anodic oxidation of hydrogen in hot phosphoric acid fuel cells, coupled with the influence of low concentrations of carbon monoxide in the fuel gas stream. In a similar way, these platinum on carbon electrocatalysts were evaluated for oxygen reduction in hot phosphoric acid. Binary noble metal alloys were prepared for anodic oxidation of hydrogen and noble metal-refractory metal mixtures were prepared for oxygen reduction. An exemplar alloy of platinum and palladium (50/50 atom %) was discovered for anodic oxidation of hydrogen in the presence of carbon monoxide, and patent disclosures were submitted. For the cathode, platinum-vanadium alloys were prepared showing improved performance over pure platinum. Preliminary experiments on electrocatalyst utilization in electrode structures showed low utilization of the noble metal when the electrocatalyst loading exceeded one weight percent on the carbon. |
| File Size | 57809770 |
| Page Count | 135 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850011201 |
| Archival Resource Key | ark:/13960/t3809xs00 |
| Language | English |
| Publisher Date | 1984-06-01 |
| Access Restriction | Open |
| Subject Keyword | Energy Production And Conversion Electrode Materials Refractory Metals Crystallites Platinum Electrocatalysts Oxidation Phosphoric Acid Fuel Cells Reduction Chemistry Carbon Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
