Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7713844 | International Journal of Hydrogen Energy | 2015 | 8 Pages |
Abstract
Trimetallic PtMRu/C cathode catalysts with MÂ =Â Co or Fe obtained by an impregnation procedure using ethylene glycol and NaBH4 as reducing agent, with suitable activity for the oxygen reduction reaction (ORR) and improved tolerance to methanol, have been physically characterized by HRTEM, EDS and XPS. The examined nanoparticles have a small particle size and are well spread on the carbon support. Pt is mainly found as Pt(0) and Co, Fe and Ru are mostly oxidized. To study their durability and performance for ORR and methanol tolerance over time, the catalysts were subjected to an electrochemical accelerated stress test (AST), consisting in cycling the potential 2000 times. Polarization curves for ORR with and without methanol were recorded. After the AST the trimetallic PtMRu/C catalysts are able to keep their performance for ORR in the presence of methanol.
Keywords
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Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
M. Asteazaran, G. Cespedes, M.S. Moreno, S. Bengió, A.M. Castro Luna,