Modification of palladium-based catalysts by chalcogenes for direct methanol fuel cells

Alexey Alexandrovich Serov, Sung Yong Cho, Sangil Han, Myoungki Min, Geunseok Chai, Kie Hyun Nam, Chan Kwak

Research output: Contribution to journalArticlepeer-review

53 Scopus citations

Abstract

Palladium-based catalysts, such as PdSx/C and PdSex/C, have been developed as oxygen reduction catalysts for direct methanol fuel cells. Pd/C catalysts containing chalcogens have been synthesized and tested for oxygen reduction and the results have been analyzed based on changes in the palladium phase. Selenium addition to the catalyst promotes the oxygen reduction due to the modification of the palladium surface. However, sulfur reduces the oxygen reduction activity to a great extent as a result of semi-amorphous palladium phase formation. Both PdSx/C and PdSex/C are highly methanol tolerant.

Original languageEnglish
Pages (from-to)2041-2044
Number of pages4
JournalElectrochemistry Communications
Volume9
Issue number8
DOIs
StatePublished - Aug 2007
Externally publishedYes

Keywords

  • Fuel cells
  • Palladium
  • Selenium
  • Sulfur

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