Reactive spray deposition technology (RSDT) is a method of depositing
films or producing nanopowders through combustion of metal-organic
compounds dissolved in a solvent. This technology produces powders of
controllable size and quality by changing process parameters to control the
stoichiometry of the final product. This results in a low-cost, continuous
production method suitable for producing a wide range of fuel cell related catalyst
films or powders. In this work, the system is modified for direct deposition of both
unsupported and carbon supported layers on proton exchange membrane (PEM)
fuel cells. The cell performance is investigated for platinum loadings of less than
0.15 mg/cm² using a heterogeneous bi-layer consisting of a layer of unsupported
platinum followed by a composite layer of Nafion®, carbon and platinum.
Comparison to more traditional composite cathode architectures is made at
loadings of 0.12 and 0.05 mg platinum/cm². The composition and phase of the
platinum catalyst is confirmed by XPS and XRD analysis while the particle size is
analyzed by TEM microscopy. Cell voltages of 0.60 V at 1 A/cm² using H₂/O₂ at a
loading of 0.053 mg platinum/cm² have been achieved.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:BVAU.2429/4458 |
| Date | 05 1900 |
| Creators | Roller, Justin |
| Publisher | University of British Columbia |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
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