Development of a self-supported single-wall carbon nanotube-based gas diffusion electrode with spatially well-defined reaction and diffusion layers
✍ Scribed by J.-F. Drillet; H. Bueb; U. Dettlaff-Weglikowska; R. Dittmeyer; S. Roth
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 1018 KB
- Volume
- 195
- Category
- Article
- ISSN
- 0378-7753
No coin nor oath required. For personal study only.
✦ Synopsis
This work reports on the development of a solvent-free method for the fabrication of a selfsupported single-wall carbon nanotubes electrode, which is based on successive sedimentation of both SWCNT/surfactant and PtRu-SWCNT/surfactant suspensions followed by a thermal treatment at 130 • C. The as-prepared self-supported electrode showed sufficient mechanical strength for half-cell investigation and membrane-electrodes assembly fabrication. By using a Pt catalyst loading of 1 mg cm -2 , the overall thickness of the gas diffusion electrode reached 95 m. Its electrochemical activity towards methanol oxidation was investigated by means of cyclic voltammetry and current-voltage polarisation measurements under half-cell and direct methanol fuel cell conditions.