Catalyst for membrane electrode assembly and method of making
AssigneeMinnesota Mining and Manufacturing Company
InventorsMark K. Debe, Gregory M. Haugen, Andrew J. Steinbach, John H. Thomas, III, Raymond J. Ziegler
Life of this patent
Estimating the term…
Abstract
Nanostructured elements are provided for use in the electrode of a membrane electrode assembly for use in fuel cells, sensors, electrochemical cells, and the like. The nanostructured elements comprise acicular microstructured support whiskers bearing acicular nanoscopic catalyst particles which may comprise alternating layers of catalyst materials, which may comprise a surface layer that differs in composition from the bulk composition of the catalyst particles, and which may demonstrate improved carbon monoxide tolerance.
Claims20
Nanostructured elements comprising acicular microstructured support whiskers bearing acicular nanoscopic catalyst particles.
A carbon monoxide tolerant catalyst comprising Pt and Ru, wherein the ratio of Pt to Ru by weight in the bulk of the catalyst is less than 1:1 and the ratio of Pt to Ru by weight on the surface of the catalyst is greater than 1:1.
Dependencies are inferred from the claim text.