Electro-Oxidation Activity of Pt-CeOx Carbon Supported Catalysts

Fiala R., Matolinova I., Matolin V., Sevcikova K., Yoshikawa H., Tapan A.

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE, cilt.8, sa.8, ss.10204-10218, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 8 Sayı: 8
  • Basım Tarihi: 2013
  • Dergi Adı: INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.10204-10218
  • Anahtar Kelimeler: Proton exchange fuel cell catalyst, cyclic voltammetry, CeO2, magnetron sputtering, graphite foil, gas diffusion layer, MEMBRANE FUEL-CELL, METHANOL ELECTROOXIDATION, CO OXIDATION, ACIDIC MEDIA, PLATINUM, ELECTRODES, NANOTUBES, ALCOHOLS, HYDROGEN, STATE
  • Gazi Üniversitesi Adresli: Evet

Özet

Platinum doped cerium oxide thin film catalyst reveals high activity at very low Pt content in proton exchange membrane fuel cells. The cyclic voltammetry study presented in this manuscript shows its electrochemical properties. Catalysts in form of very thin and highly porous layers deposited on carbon supports were prepared by magnetron sputtering. The sputtered catalysts were compared with the commercial Pt-C reference one. The photoelectron spectroscopy studies showed that the chemical state of platinum prepared by such a physical way is ionic which might be favorable for the catalytic activity. In this study the hydrogen and methanol electro oxidation was investigated using cyclic voltammetry. It was shown that the Pt-CeO2 sputtered catalyst was more resistant to CO poisoning than the Pt-C reference.