Electrocatalysis used in energy-related applications such as fuels cells and hydrogen production can strongly impact the future energy technology picture. Pt and Pt-based materials are widely used as electrocatalysts, but suffer from drawbacks related to cost, inefficiency, and low durability, which largely limits further development of fuel cells. We have been investigating ultrathin layer-Pt electrocatalysts or non-Pt electrocatalysts to reduce Pt loadings or replace costly Pt electrocatalysts while maintaining or even enhancing activity with improved stability. Fundamental studies of model electrocatalysts with well-defined surface compositions and structures can provide a better understanding of the surface phenomena that control electrocatalytic reactions. In this work, four electrocatalysts, i.e., Pd3Fe(111), Au on Pd3Fe(111),  and Pt on C/Re(11-21) and O/W(111) nanotemplates, were prepared in vacuum, characterized using surface science techniques, and evaluated for their electrocatalytic activity for the oxygen reduction reaction (ORR), hydrogen evolution reaction (HER), and ethanol oxidation (EO).

Multimetallic electrocatalytic surfaces: Structure, reactivity, and nanotemplating

244th National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.