The electrochemical characterization of chemical carbonyl route generated Pt:Ni nano-alloys, in acid and alkaline media, is reported. Earlier XRD and Debye Function Analysis (DFA) studies (Yang et al., 2004 [1]) provided the structure of these nanoalloys. Herein, the HER/HOR electrocatalytic activity as well as ORR kinetics, in alkaline medium, was determined and correlated with the interatomic Pt[sbnd]Pt distance. The HER/HOR and ORR exchange current densities describes a Volcano-like plot. For both systems, the maximum activity for both processes peaked with Pt3Ni.
Alkaline hydrogen electrode and oxygen reduction reaction on PtxNi nanoalloys
Calvillo L.;Granozzi G.;
2020
Abstract
The electrochemical characterization of chemical carbonyl route generated Pt:Ni nano-alloys, in acid and alkaline media, is reported. Earlier XRD and Debye Function Analysis (DFA) studies (Yang et al., 2004 [1]) provided the structure of these nanoalloys. Herein, the HER/HOR electrocatalytic activity as well as ORR kinetics, in alkaline medium, was determined and correlated with the interatomic Pt[sbnd]Pt distance. The HER/HOR and ORR exchange current densities describes a Volcano-like plot. For both systems, the maximum activity for both processes peaked with Pt3Ni.
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