Study on the co-catalytic effect of titanium dioxide and titanate nanomaterials on platinum-based catalysts in direct alcohol fuel cells

Pu Xiao, Xun Guo, Dao Jun Guo, Huan Qiao Song, Jie Sun, Zhe Lv, Yuan Liu, Xin Ping Qiu, Wen Tao Zhu, Li Quan Chen, Ulrich Stimming

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Titanium dioxide (TiO2) and titanate materials such as nanotubes, nanobelts and nanorods were synthesized and their co-catalytic effects were studied by mixing them with Pt/C catalysts. After mixing with these nanomaterials, the methanol oxidation current of Pt/C was increased significantly, but ethanol oxidation current of Pt/C was not increased in acidic medium. Combining with material characterization and electrochemical measurements, the result showed that the co-catalysts with suitable porous channels and higher proton conductivity could accelerate the methanol oxidation, and the co-catalysts containing more adsorbed and structural water could better increase the oxidation of intermediates. TiO2(B) nanobelts and titanate nanotubes are newly developed nanomaterials and protons could transfer along their long-axis. They have showed good co-catalytic effect and would have more applications in direct alcohol fuel cells (DAFC).

Original languageEnglish
Pages (from-to)541-550
Number of pages10
JournalElectrochimica Acta
Volume58
Issue number1
DOIs
StatePublished - 30 Dec 2011

Keywords

  • Anode catalyst
  • Co-catalytic effect
  • Direct alcohol fuel cells
  • TiO
  • Titanate

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