Noble metal catalysts (Pt and Pd) for use in direct alcohol fuel cell (DAFC) have been proposed for several decades, however, a major stumbling blockage in the commercial application of these devices for power generation is the low power rate gerated by them. Nowdays, the highest values obtained for DAFC are around 50 mW cm-2. So this PhD project aims to develop direct alcohol (ethanol and glycerol) fuel cells with high power density. It will be investigated the following parameters: (i) change in the reactional medium, e.g., performance of the catalysts in DAFCO in basic medium, ( ii) preparation of new compositions and catalysts PdM PdMN (M, N = Sn, Ni, Ru, etc.).The preparation method of the catalysts to be used it will be microwave-assited heating. The physical characterization of electrocatalysts will be accomplished by: Transmission Electron Microscopy, Energy Dispersive X-ray Diffraction X-ray photoelectron spectroscopy and X-ray difraction. The electrochemical characterization will be carried out by cyclic voltammetry, chronoamperometry, chronopotentiometry and CO-stripping technique. Controlled potential electrolysis and analysis of products formed by High Performance Liquid Chromatography (HPLC) technique and in situ infrared (IR)will also be conducted. Finally, it will be performed fuel cell test, durability and stability of the cell devices.
News published in Agência FAPESP Newsletter about the scholarship: