Abstract
A Pt/CNTs catalyst coated with N-doped carbon (xNC-Pt/CNTs) is synthesized by atomic layer deposition (ALD) and applied in methanol electrooxidation reaction. Pt nanoparticles and polyimide (PI) are sequentially deposited on carbon nanotubes (CNTs) by ALD. After annealing at 600 °C in H2 atmosphere, the PI is carbonized to produce porous N-doped carbon. Upon coating with a moderately thick layer of N-doped carbon, the optimized 50NC-Pt/CNTs show higher activity, better long-term stability, and improved CO resistance towards methanol electrooxidation compared with Pt/CNTs and commercial Pt/C (20 wt%). X-ray photoelectron spectroscopy characterization result indicates that the Pt-CO bond is weakened after N-doped carbon coating and CO adsorption on the Pt surface is weakened, leading to superior electrocatalytic performance.
| Translated title of the contribution | N-doped carbon modified Pt/CNTs synthesized by atomic layer de-position with enhanced activity and stability for methanol electrooxidation |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 1038-1043 |
| Number of pages | 6 |
| Journal | Chinese Journal of Catalysis |
| Volume | 39 |
| Issue number | 6 |
| DOIs | |
| State | Published - 1 Jun 2018 |
| Externally published | Yes |