Abstract
C, Pt/C, Pd/C powders were used as cathodic catalysts for oxygen reduction in air cathode microbial fuel cells (MFCs). Pd/C catalyst got the better performance than Pt/C and C catalysts in alkaline conditions. Several pretreatments were tested and were proven that oxygen reduction efficiency can be further improved by simple pretreatment. After applying all those catalysts on air-cathodes with Nifion bonder, the maximum current density of Pd/C was 7.96A/m2 (-0.3V, Ag/AgCl reference), which was slightly higher than that of C catalyst (6.85 A/m2) and Pt/C catalyst (6.34 A/m2). X-ray photoelecton spectroscopy (XPS), X-ray diffration (XRD) and Scanning electron microscope (SEM) tests for the catalysts before and after treatment showed that the atomic ratio of N, O, C on the catalyst surface was changed and may provide the reasons for the reduction activity.
| Original language | English |
|---|---|
| Journal | ACS National Meeting Book of Abstracts |
| State | Published - 2010 |
| Event | 239th ACS National Meeting and Exposition - San Francisco, CA, United States Duration: 21 Mar 2010 → 25 Mar 2010 |
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