Fabrication and Evaluation of PTFE-Bonded Platinum Electrodes for Space Flight Application Joshua Johnston, South Carolina Governor’s School for Science and Mathematics Dr. Xinyu Huang, University of South Carolina, Department of Mechanical Engineering
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Fabrication and Evaluation of PTFE-Bonded Platinum Electrodes for Space Flight Application
Fabrication and Evaluation of PTFE-Bonded Platinum Electrodes for Space Flight Application. Joshua Johnston, South Carolina Governor’s School for Science and Mathematics Dr. Xinyu Huang, University of South Carolina, Department of Mechanical Engineering. Background. - PowerPoint PPT Presentation
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Fabrication and Evaluation of PTFE-Bonded Platinum
Electrodes for Space Flight Application
Joshua Johnston, South Carolina Governor’s School for Science and Mathematics
Dr. Xinyu Huang, University of South Carolina, Department of Mechanical Engineering
cells for space flight applicationSupply electrical power and potable water
during space flight. Polymer electrolyte membrane fuel cells
(PEMFC’s) Provides the long-term stability and durability
BackgroundProton conductive membranes are interfaced
with an electrodeUnsupported platinum catalyst for durability. Platinum blackPolytetraflouroethylene (PTFE) to manage
water
Purpose
To develop membrane electrode assemblies that meet operation standards set by NASA, which are 200 mA/cm2 with hydrogen and oxygen under 30 psi (relative) pressure.
The long term objective of this project is to develop high performance membrane electrode assemblies that can meet or exceed NASA’ s performance objectives.
Pressurized performance Water transport issues Platinum loading PTFE loading Hydrogen Crossover
Discussion and Conclusion (continued)
In conclusion the performance standards set by NASA were not achieved in this study. However, this study did serve as a good basis for future attempts.
Future Research
Future research endeavors will attempt to optimize the fabrication of the GDE’s including: platinum loading, PTFE loading, and deposition of both the catalyst and ionomer.
Acknowledgements
South Carolina Governor’s School for Science and Mathematics
University of South CarolinaWilliam RigdonJoshua SightlerDianna Larabee Mr. LaCross