A novel method for preparing proton exchange membrane fuel cell electrodes by the ultrasonic-spray technique
Abstract
A novel ultrasonic-spray method for preparing gas diffusion electrodes (GDEs) for proton exchange membrane fuel cell (PEMFC) is described. Platinum (Pt) loaded on Nafion®-bonded GDEs were prepared by the ultrasonic-spray method on various commercial woven and non-woven gas diffusion layers (GDLs) at several Pt loadings in the range of 0.40-0.05 mg cm-2. The ultrasonic-sprayed GDEs were tested and compared to commercial and hand-painted GDEs. It was found that the GDEs prepared by the ultrasonic-spray method exhibited better performances compared to those prepared by the hand-painting technique, especially at low Pt loadings. GDEs fabricated by the ultrasonic-spray method with a platinum loading of 0.05 mg cm-2 exhibited a peak power rating of 10.9 W mg-1 compared to 9.8 W mg-1 for hand-painted GDEs. For all experiments using various GDLs, Sigracet SGL 10BC exhibited the best performance with a peak power of 0.695 W cm-2.
- Publication:
-
Journal of Power Sources
- Pub Date:
- October 2011
- DOI:
- 10.1016/j.jpowsour.2011.06.024
- Bibcode:
- 2011JPS...196.8500M
- Keywords:
-
- Membrane electrode assembly (MEA);
- Proton exchange membrane fuel cell (PEMFC);
- Gas diffusion layer (GDL);
- Gas diffusion electrode (GDE);
- Ultrasound