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Advances in solid polymer electrolyte fuel cell technology with low-platinum-loading electrodes
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Derouin, C. R. Redondo, A. Ticianelli, E. A. Srinivasan, Supramaniam |
| Copyright Year | 1987 |
| Description | The Gemini Space program demonstrated the first major application of fuel cell systems. Solid polymer electrolyte fuel cells were used as auxiliary power sources in the spacecraft. There has been considerable progress in this technology since then, particularly with the substitution of Nafion for the polystyrene sulfonate membrane as the electrolyte. Until recently the performance was good only with high platinum loading (4 mg/sq cm) electrodes. Methods are presented to advance the technology by (1) use of low platinum loading (0.35 mg/sq cm) electrodes; (2) optimization of anode/membrane/cathode interfaces by hot pressing; (3) pressurization of reactant gases, which is most important when air is used as cathodic reactant; and (4) adequate humidification of reactant gases to overcome the water management problem. The high performance of the fuel cell with the low loading of platinum appears to be due to the extension of the three dimensional reaction zone by introduction of a proton conductor, Nafion. This was confirmed by cyclic voltammetry. |
| File Size | 849521 |
| Page Count | 16 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870020504 |
| Archival Resource Key | ark:/13960/t15n13r14 |
| Language | English |
| Publisher Date | 1987-09-01 |
| Access Restriction | Open |
| Subject Keyword | Energy Production And Conversion Hot Pressing Service Life Electrode Materials Pressure Effects Platinum Fuel Cells Spacecraft Power Supplies Solid Electrolytes Oxidation-reduction Reactions Auxiliary Power Sources Current Density Polymeric Films Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
