Synthesis and characterization of platinum catalysts on multiwalled carbon nanotubes by intermittent microwave irradiation for fuel cell applications

Article Abstract:

Pt electrocatalysts supported on multiwalled carbon nanotube (Pt/MWCNT) nanocomposites are synthesized by a rapid intermittent microwave irradiation (IMI) technique for polymer electrolyte and direct methanol fuel cells (PEFCs and DMFCs), using H2PtCl6 as Pt precursor and they are characterized by XRD, XPS and TEM. The results have indicated that Pt/MWCNT nanocomposites synthesized by the IMI method exhibit higher electrochemical active area and higher catalytic activity for the methanol oxidation reaction in comparison to a commercial Pt/C catalyst.

Usage, X-rays, X-ray diffraction, Nanotubes

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Laser-induced potential jump at the electrochemical interface probed by picosecond time-resolved surface-enhanced infrared absorption spectroscopy

Article Abstract:

The potential jump at the electrochemical interface induced by a visible pulse irradiation is studied by picosecond time-resolved surface-enhanced infrared absorption spectroscopy (SEIRAS). A red shift is observed with a time delay of approximately 200 ps with respect to a visible pump-pulse irradiation and the heating of water layers near the surface is mainly responsible for the potential jump through the orientation change of water molecules.

Infrared spectroscopy

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Highly durable proton exchange membranes for low temperature fuel cells

Article Abstract:

A novel method to fabricate nafion/poly(tetrafluoroethylene) (PTFE) composite proton exchange membranes (PEMs) with high durability and high chemical stability is presented.

Proton exchange membrane fuel cells

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