Influence of Pressure on the Structural and Electrocatalytic Properties of Pt Nanoparticles Grown by Pulsed Laser Ablation onto Carbon Paper Substrate
Abstrak
The pulsed laser deposition has been used to synthesize Pt nanostructured films onto carbon paper substrate. In summary, we have examined the change occurring in structural characteristics of Pt thin films grown in a He background gas and in vacuum. The electrochemical studies showed that Pt deposited under 5 Torr of He background pressure displayed the highest electroactive surface area, and the highest current mass activity of methanol electro-oxidation. The reason for such enhanced electrocatalytic activity is ascribed to the high roughness of Pt5T surface, which offers more active sites. From an application point of view, this study demonstrates that using similar amount of Pt, the enhancement of the electrocatalytic activity can be achieved by tuning the surface roughness of the Pt rather than increasing its loading.
Topik & Kata Kunci
Penulis (3)
Zéhira Hamoudi
My Ali El Khakani
Mohamed Mohamedi
Akses Cepat
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- 2012
- Sumber Database
- DOAJ
- DOI
- 10.1016/S1452-3981(23)13443-2
- Akses
- Open Access ✓