Record number :
1672345
Title of article :
Composite ternary SnO2–IrO2–Ta2O5 oxide electrocatalysts
Author/Authors :
Ardizzone، نويسنده , , S. and Bianchi، نويسنده , , C.L. and Cappelletti، نويسنده , , G. and Ionita، نويسنده , , M. and Minguzzi، نويسنده , , A. and Rondinini، نويسنده , , S. and Vertova، نويسنده , , A.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
Pages :
7
From page :
160
To page :
166
Abstract :
Nanostructured, ternary SnO2–IrO2–Ta2O5 composites have been studied as promising electrocatalytic materials for oxygen evolution reaction (OER) in acid water electrolysers. Both unsupported and Ti-supported powders of the general composition Sn1−x−yIrxTayO2+2.5y (x = 0, 0.03, 0.07, 0.15 and y = 0, 0.07) have been prepared by the same sol–gel route, and characterized in terms of structural (XRD) and morphological (SEM, BET) features, surface composition (XPS), and electrochemical behaviour (cyclic voltammetry, CV, electrochemical impedance spectroscopy, EIS, and slow potentiodynamic techniques). The results point out a dramatic variation of crystallite size and surface area with Ir and Ta doping of the SnO2 base matrix, accompanied by an improvement of the electronic and electrocatalytic properties of the composites.
Keywords :
Sn–Ir–Ta oxide composites , Oxygen evolution , XPS , Sol–gel , nanostructured materials , Electrocatalytic activity
Journal title :
Journal of Electroanalytical Chemistry
Serial Year :
2006
Link To Document :
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