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Pd electroless plated NafionĀ® membrane for high concentration DMFCs
- Source :
-
Journal of Membrane Science . Aug2005, Vol. 259 Issue 1/2, p27-33. 7p. - Publication Year :
- 2005
-
Abstract
- Abstract: A Pd layer was deposited on Nafion® membrane by electroless plating in order to reduce methanol crossover. The composite membrane was characterized by using the following techniques of X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive X-ray spectrometer (EDXS) and transmission electron microscopy (TEM). Methanol crossover was determined by the electrochemical method. The experimental results indicated that Pd film was successfully deposited onto the Nafion® membrane. The methanol permeability was effectively suppressed by the Pd layer, with methanol-related current decreasing from 64mA/cm2 (J lim) to 57mA/cm2 for 1M methanol and from 267mA/cm2 to 170mA/cm2 for 5M methanol, respectively. Furthermore, by employing the novel Pd-Nafion® composite electrolyte, the performance of single fuel cell was obviously improved with a high concentration of methanol such as 5M, indicating that depositing Pd layer onto the Nafion® membrane is an effective method to suppress the methanol crossover. [Copyright &y& Elsevier]
- Subjects :
- *LEAD
*ALCOHOLS (Chemical class)
*ELECTRON microscopes
*OPTICS
Subjects
Details
- Language :
- English
- ISSN :
- 03767388
- Volume :
- 259
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Journal of Membrane Science
- Publication Type :
- Academic Journal
- Accession number :
- 18135967
- Full Text :
- https://doi.org/10.1016/j.memsci.2005.02.017