Oxygen reduction reaction evaluation of platinum catalysts formed via the reactive spray deposition technique

DOIResolve DOI: http://doi.org/10.1115/FuelCell2011-54278
AuthorSearch for: ; Search for: ; Search for: ; Search for:
TypeArticle
Proceedings titleASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology. Collocated with ASME 2011 5th International Conference on Energy Sustainability, FUELCELL 2011
ConferenceASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology. Collocated with ASME 2011 5th International Conference on Energy Sustainability, FUELCELL 2011, 7 August 2011 through 10 August 2011, Washington, DC
ISBN9780791854693
Pages277286; # of pages: 10
SubjectDeposition conditions; Electrolyte membrane; Glassy carbon electrodes; Independent control; Intrinsic activities; Nano-sized particles; Oxygen reduction mass activities; Oxygen reduction reaction; Atomic emission spectroscopy; Electrolytes; Electrolytic reduction; Fuel cells; Glass membrane electrodes; Inductively coupled plasma; Ionomers; Platinum; Real time control; Sustainable development; Catalysts
AbstractReactive Spray Deposition Technology (RSDT) is a fabrication process developed for the 1-step deposition of platinum catalyst, carbon support and ionomer directly onto a Nafion® membrane. The process involves pumping a platinumorganic solute dissolved in a combustible solvent through an atomizer. The spray is then combusted and nanosized particles of platinum are produced and subsequently cooled by a gas quench. Once the reaction plume is cooled a secondary set of nozzles is used to inject the carbon support and ionomer. The quench air cools the reactive zone enough to allow direct deposition onto a Nafion® electrolyte or a glassy carbon electrode. This arrangement thus realizes a process for one-step catalyst formation, dispersion onto carbon and direct deposition onto an electrolyte membrane. The independent control of the three components allows for real-time control of the carbon, platinum, and ionomer ratios in the final electrode. In this research work we examine the oxygen reduction reaction via a rotating disc three electrode set-up to understand the intrinsic activity of the as-sprayed platinum. The mass and specific activities were measured in a 0.1 M perchloric acid electrolyte under different deposition conditions and loading was verified by atomic emission spectroscopy inductively coupled plasma (AES-ICP). A range of microscopy images for visualization of the microstructure are also presented. The initial results show that the RSDT technique is capable of producing catalysts with oxygen reduction mass activity at 0.9 V of 200 mA/mgPt rotating at 1600 rpm and 30 °C. © 2011 by ASME.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Fuel Cell Innovation
Peer reviewedYes
NPARC number21272003
Export citationExport as RIS
Report a correctionReport a correction
Record identifierec4faac3-a299-4ae6-800c-99ac0efe8313
Record created2014-05-20
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)