Pt-CeO(2)/C anode catalyst for direct methanol fuel cells

Cited 198 time in webofscience Cited 200 time in scopus
  • Hit : 223
  • Download : 39
In order to develop a cheaper and durable catalyst for methanol electrooxidation reaction, ceria (CeO(2)) as a co-catalytic material with Pt on carbon was investigated with an aim of replacing Ru in PtRu/C which is considered as prominent anode catalyst till date. A series of Pt-CeO(2)/C catalysts with various compositions of ceria, viz. 40 wt% Pt-3-12 wt% CeO(2)/C and PtRu/C were synthesized by wet impregnation method. Electrocatalytic activities of these catalysts for methanol oxidation were examined by cyclic voltammetry and chronoamperometry techniques and it is found that 40 wt% Pt-9 wt% CeO(2)/C catalyst exhibited a better activity and stability than did the unmodified Pt/C catalyst. Hence, we explore the possibility of employing Pt-CeO(2) as an electrocatalyst for methanol oxidation. The physicochemical characterizations of the catalysts were carried out by using Brunauer Emmett Teller (BET) surface area and pore size distribution (PSD) measurements. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) techniques. A tentative mechanism is proposed for a possible role of ceria as a co-catalyst in Pt/C system for methanol electrooxidation.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2008-12
Language
English
Article Type
Article
Keywords

PT-RU ALLOYS; PLATINUM-RUTHENIUM; ELECTROCATALYTIC OXIDATION; ELECTROCHEMICAL IMPEDANCE; SURFACE OXIDATION; ACID ELECTROLYTE; CARBON-MONOXIDE; SULFURIC-ACID; CO OXIDATION; ELECTROOXIDATION

Citation

APPLIED CATALYSIS B-ENVIRONMENTAL, v.84, no.3-4, pp.773 - 782

ISSN
0926-3373
DOI
10.1016/j.apcatb.2008.06.017
URI
http://hdl.handle.net/10203/192892
Appears in Collection
MS-Journal Papers(저널논문)
Files in This Item
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 198 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0