A FEASIBILITY STUDY OF PALLADIUM AS A HYDROGEN DIFFUSION ELECTRODE MATERIAL FOR FUEL CELLS
Abstract
Pd films as H diffusion electrodes in fuel cells were investigated and found to posses very interesting possibilities when the thickness is of the order of 100 Angstrom - or at temperatures above 200 C. Above 400 C, H transport through Pd films is found to follow a semi-logarithmic relationship, with an activation energy for diffusion of about 5.5 kcal/g-mole. At approximately 200 C, a low temperature phase having the approximate composition Pd2H forms with a heat of dissociation of about 8.5 kcal/g-mole. At temperatures below 150 C, the current density supportable by mass transport is too low to make Pd films suitable for gas diffusion electrodes in fuel cells. Additional experimental work is suggested to clarify the possibilities of using Pd as a fuel cell electrode under conditions other than those indicated above. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1962
- Accession Number
- AD0287055
Entities
People
- Leon L. Chiu
Organizations
- University of Florida