Abstract
In this study, two different methods were studied to prepare Pt-Pd catalysts for direct methanol fuel cells in order to enhance the electrochemical efficiency. The catalysts were compared with simultaneously deposited Pt-Pd and sequentially deposited Pt-Pd. The electrocatalysts contained 20 wt% of metal loading on carbon black and 1:2 of Pt:Pd atomic ratio. Electrochemical properties of the catalysts were compared by measuring cyclic voltammetries and average sizes and lattice parameters were measured by transmission electron microscopy images and x-ray diffraction. As a result, sequentially deposited Pt-Pd/C catalysts showed better electrochemical properties than those of simultaneously deposited Pt-Pd/C catalysts.
| Original language | English |
|---|---|
| Pages (from-to) | 153-156 |
| Number of pages | 4 |
| Journal | Applied Chemistry for Engineering |
| Volume | 23 |
| Issue number | 2 |
| State | Published - Feb 2012 |
Keywords
- Direct methanol fuel cell
- Electrocatalytic activity
- Nanoparticle
- Pt-Pd catalysts
- Reduction