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Development of nanophase CeO2-Pt/C cathode catalyst for direct methanol fuel cell
Cited 100 time in
Web of Science
Cited 103 time in Scopus
- Authors
- Issue Date
- 2005-01
- Publisher
- Elsevier
- Citation
- Journal of Power Sources 140 (2005) 59–65
- Keywords
- Air utilization ; Cathode catalyst ; CeO2 ; Direct methanol fuel cell ; Oxygen storage material ; MEA
- Abstract
- Incorporation of nanophase ceria (CeO2) into the cathode catalyst Pt/C increased the local oxygen concentration in an air atmosphere,
leading to enhanced single-cell performance of direct methanol fuel cell (DMFC). Ceria doped catalysts were effective at low oxygen partial
pressure (≤0.6 atm) conditions and 1 wt.% CeO2 doped Pt/C exhibited the highest performance. The effect of ceria was more prominent with
air as the cathode reactant and the ceria acted as a mere impurity in a pure oxygen atmosphere, decreasing the DMFC performance. Impedance
spectra showed a decrease in polarization resistance with the ceria addition to the cathode catalyst in low-potential regions confirming the
facile mass transfer of the reactant oxygen molecules to catalytic sites. Transmission electron microscopy (TEM) pictures showed a uniform
distribution of CeO2 around platinum sites.
- ISSN
- 0378-7753
- Language
- English
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