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Can I read Tuning the activity of Pt alloy electrocatalysts by means of the lanthanide contraction on EtoBox?
Tuning the activity of Pt alloy electrocatalysts by means of the lanthanide contraction by M. Escudero-Escribano; P. Malacrida; M. H. Hansen; U. G. Vej-Hansen; A. Velazquez-Palenzuela; V. Tripkovic; J. Schiotz; J. Rossmeisl; I. E. L. Stephens; I. Chorkendorff is a Medicine article available to read on EtoBox.
What is Tuning the activity of Pt alloy electrocatalysts by means of the lanthanide contraction about?
The high platinum loadings required to compensate for the slow kinetics of the oxygen reduction reaction (ORR) impede the widespread uptake of low-temperature fuel cells in automotive vehicles. We have studied the ORR on eight platinum (Pt)-lanthanide and Pt-alkaline earth electrodes, Pt5M, where M is lanthanum, cerium, samarium, gadolinium, terbium, dysprosium, thulium, or calcium. The materials are among the most active polycrystalline Pt-based catalysts reported, presenting activity enhancement by a factor of 3 to 6 over Pt. The active phase consists of a Pt overlayer formed by acid leaching. The ORR activity versus the bulk lattice parameter follows a high peaked "volcano" relation. We demonstrate how the lanthanide contraction can be used to control strain effects and tune the activity, stability, and reactivity of these materials.
Who reads Tuning the activity of Pt alloy electrocatalysts by means of the lanthanide contraction?
It is typically read by researchers, students, and practitioners in Medicine.
- Author
- M. Escudero-Escribano; P. Malacrida; M. H. Hansen; U. G. Vej-Hansen; A. Velazquez-Palenzuela; V. Tripkovic; J. Schiotz; J. Rossmeisl; I. E. L. Stephens; I. Chorkendorff
- Published
- 2016
- Language
- EN
- Field
- Medicine (Social Sciences)