10 research outputs found
Role of Cerium Oxide in the Enhancement of Activity for the Oxygen Reduction Reaction at PtâCeOx Nanocomposite Electrocatalyst : An in Situ Electrochemical X-ray Absorption Fine Structure Study
Get PDFIn situ electrochemical X-ray absorption fine structure (XAFS) measurements were performed at the Pt L3 and Ce L3 edges of the Pt-CeOx/C catalyst, which was prepared by a combined process of precipitation and coimpregnation methods, as well as at the Pt L3 edge of the conventional Pt/C catalyst in oxygen-saturated H2SO4 solution to clarify the role of CeOx in the reduction of the overpotential for the oxygen reduction reaction (ORR) at the Pt-CeOx nanocomposite compared with the conventional Pt/C catalyst. XAFS measurements clearly show that the enhancement of ORR activity is attributed to the inhibition of Pt oxide formation by the CeOx layer, of which Ce3+ was oxidized to Ce4+ instead of Pt at the Pt oxide formation potential
Role of Cerium Oxide in the Enhancement of Activity for the Oxygen Reduction Reaction at PtâCeO x
No full textEffect of the TiO2 phase and loading on oxygen reduction reaction activity of PtCo/C catalysts in proton exchange membrane fuel cells
No full textPrimary Oxide Latent Storage and Spillover Enabling Electrocatalysts with Reversible Oxygen Electrode Properties and the Alterpolar Revertible (PEMFC versus WE) Cell
No full textAnchoring Effect of Exfoliated-Montmorillonite-Supported Pd Catalyst for the Oxygen Reduction Reaction
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No full textTheory, Substantiation, and Properties of Novel Reversible Electrocatalysts for Oxygen Electrode Reactions
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