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Related Experiment Video

Updated: May 1, 2026

Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
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Pt nanoparticles supported on Sb-doped SnO₂ porous structures: developments and issues.

E Fabbri1, A Rabis, R Kötz

  • 1Electrochemistry Laboratory, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland. emiliana.fabbri@psi.ch.

Physical Chemistry Chemical Physics : PCCP
|March 28, 2014
PubMed
Summary

High surface area antimony doped tin oxide (Sb-SnO2) was synthesized and optimized for electrochemical stability. The resulting platinum/Sb-SnO2 electrodes showed enhanced corrosion resistance compared to platinum/carbon, highlighting the importance of surface composition.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Nanotechnology

Background:

  • Tin oxide (SnO2) is a widely studied metal oxide, but its application in electrochemical systems is often limited by stability issues.
  • Antimony doping can modify the electronic and surface properties of SnO2, potentially improving its performance.
  • Controlling the surface stoichiometry of doped metal oxides is critical for their electrochemical applications.

Purpose of the Study:

  • To synthesize high surface area antimony doped tin oxide (Sb-SnO2) using a modified sol-gel method.
  • To investigate the effect of processing conditions on the surface stoichiometry and electrochemical stability of Sb-SnO2.
  • To develop and evaluate model Pt/Sb-SnO2 electrodes for enhanced corrosion resistance.

Main Methods:

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  • Modified sol-gel synthesis for Sb-SnO2.
  • Characterization of bulk and surface properties under varying processing conditions.
  • Fabrication of Pt/Sb-SnO2 electrodes via magnetron sputtering of Pt nanoparticles.
  • Accelerated electrochemical stability testing (1000 potential cycles).

    • Main Results:

    • Processing conditions significantly altered Sb-SnO2 surface stoichiometry while maintaining bulk composition.
    • Surface composition was identified as a critical factor for electrochemical stability.
    • Pt/Sb-SnO2 electrodes exhibited significantly enhanced corrosion stability compared to Pt/carbon electrodes after 1000 potential cycles.

    Conclusions:

    • Optimized Sb-SnO2 synthesis leads to improved electrochemical stability.
    • Surface stoichiometry control is key for developing robust Sb-SnO2-based electrochemical systems.
    • The Pt/Sb-SnO2 system offers a promising alternative to Pt/carbon for electrochemical applications requiring high stability.