Abstract's Details

Strain and Structure in Dealloyed Binary Pt-Alloy Electrocatalysts
Abstract ID	MAT-13
Presenter	Jennifer Leisch
Presentation Type	Poster
Full Author List	J. E. Leisch (1), S. Kelly (2), C. Yu (3), S. Koh (3), P. Strasser (3), M. F. Toney (1)
Affiliations	(1) Stanford Synchrotron Radiation Laboratory (2) Stanford University (3) University of Houston
Category	Materials Science
Abstract	Fuel cell catalyst performance in nanoparticulate based systems is strongly dependent on the size, shape, and composition distribution of these materials. For Pt-based alloys, recent work has shown that alloy breakdown through the selective dissolution of the less noble component can actually give rise to enhanced catalytic properties. Though work has focused on nanoparticle-based systems, a fundamental understanding of these alloy materials is difficult. Here, we present recent work which examines the dealloying process in thin-film alloy materials, both from a structural (x-ray diffraction and scattering) point of view, as well as that of electrochemical characterization of activity and surface areas. The structure, stability, and activity relationships in these dealloyed materials will be discussed.
Footnotes
Funding Acknowledgement	Portions of this research were carried out at the Stanford Synchrotron Radiation Laboratory, a national user facility operated by Stanford University on behalf of the U.S. Department of Energy, Office of Basic Energy Sciences.