Hostname: page-component-76fb5796d-wq484 Total loading time: 0 Render date: 2024-04-26T15:13:17.964Z Has data issue: false hasContentIssue false
  • English
  • Français

Chemical Interactions in Ionomers and Ionomer Membranes Containing Metal particles and Ions

Published online by Cambridge University Press:  10 February 2011

William M. Risen
William M. Risen*
Affiliation:
Department of Chemistry, Brown University, Providence, RI 02912, WRISEN@BROWN.EDU
Get access

Abstract

Ionomer membranes are employed in PEM fuel cells as the proton conducting element, but they also hold potential for catalytic applications in both hydrogen based and other low temperature fuel cells. In these applications the reactions of H2, CO, 02, H20 and other small molecules with metal-based catalysts are important to consider. Reactions of these species with perfluorocarbonsulfonic acid based ionomers (PFSA), of which Nafionsa are prototypical, containing Rh, Ru, Pt and other metal ions and particles are shown. Metal carbonyls form with metal ions that have been reduced in situ to reduced valence ions or to metal particles, by the combination of CO and H2O or with H2 directly. Metal nitrogen complexes also can be formed. In addition, the interactions of dissimilar metal ions leads to distinct species with NO or CO, for example, that are different from the products with either ion separately.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 575: Symposium CC – New Materials for Batteries & Fuel Cells , 1999 , 201
Copyright
Copyright © Materials Research Society 2000

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Risen, W. M., Jr. in Physical Chemistry of Jonomers, edited by Schlich, S., CRC Press, Boca Raton, Florida, 1996, Chapter 12, Applications of lonomers.Google Scholar
2. Risen, W. M., Jr., Chemistry in lonomers, European Conference on Electroactive Membranes, Monte Verita, Ascona, Switzerland, Feb. 16, 1999.Google Scholar
3. Peluso, S. L., Ph. D. Thesis, Brown Univ. 1980 Google Scholar
4. Barnes, D. M., Ph. D. Thesis, Brown Univ., 1981 Google Scholar
5. Noor-Chaudhuri, S., Ph. D. Thesis, Brown Univ., 1983 Google Scholar
6. Shim, I. W., Ph. D. Thesis, Brown Univ., 1985 Google Scholar
7. Mattera, V. D., Ph. D. Thesis, Brown Univ., 1986 Google Scholar
8. Brack, H. Peter, unpublished, 1993, Technical Report, US Army Laboratory, Natick, MA.Google Scholar
9. Waller, F. J., U.S. Patent 4,446,329 (1984).Google Scholar
10. Nugent, W. A. and Waller, F. J., U.S. Patent 4,709,085 (1987).Google Scholar
11. Zhang, P., unpublished work, 1999.Google Scholar
12. Mattera, V. D., Barnes, D. M., Chaudhuri, S. N., Gonzalez, R. D., and Risen, W. M., Jr., J. Phys. Chem., 90, 4819(1986).Google Scholar
13. Shim, I. W., Mattera, V. D. and Risen, W. M., Jr., J. Catalysis, 94, 531(1985)Google Scholar