Time filter

Source Type

Hammami R.,Center for Research and Energy Technologies n | Ahamed Z.,National Center for Research in Materials science | Charradi K.,Center for Research and Energy Technologies n | Beji Z.,Center for Research and Energy Technologies n | And 5 more authors.
International Journal of Hydrogen Energy

Nafion hybrid membrane containing titanium dioxide (TiO2) nano-particles were elaborated by in situ sol-gel technique. Micro wave treatment was used during hybrid elaboration to 2 h. The X-ray diffraction (XRD) shows the crystallization of TiO2 in anatase and rutile phases. The Infrared spectroscopy IR spectrum of hybrid membranes Nafion-TiO2 confirm the presence of bonds Ti-O and Ti-OH which proves that the hybridization of the membrane by sol-gel method is successful. Atomic Force Microscopy AFM confirmed the good dispersion of TiO2 nano-particles. The electrochemical impedance spectroscopy (EIS) and solvent uptake measurements suggest the enhancement of the membrane performance. Copyright © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved. Source

Barbouche M.,Center for Research and Energy Technologies n | Krout F.,Center for Research and Energy Technologies n | Chiha M.,Center for Research and Energy Technologies n | Charradi K.,Center for Research and Energy Technologies n | And 2 more authors.
2013 International Conference on Electrical Engineering and Software Applications, ICEESA 2013

Great efforts are presently being undertaken to develop fuel cell applications. In this study, a design and realization of a fuel cell test station is described. The control of the stack temperature and the optimization of some parameters, such as the acquisition and equilibrium time for each value of the current density are necessary steps for an objective and trustworthy comparison of the performance data. Our test bench comprises two major parts hardware and software. The hardware part comprises an electrical cabinet, a power supply, an acquisition chain, an electronic load, mass flow controllers, temperature controller, solenoid valves, and solid state relay. The assemblies of the different parts of the test station are made considering our project objectives, such as, security, size (Length: 1000mm, Width: 800mm, Height: 1900mm), accessibility and mobility...etc. The software part includes not only the development of the pipelines and instrumentations diagrams but also the design of the rack using solid-works software. An interface was developed in the LABVIEW environment to enable mass flow controller and the solenoid valves control. It also allows the automatic data acquisition (fuel cell power, temperature and pressure). Preliminary measurements are made with a PEMFC (25 cm2) to make out the effect of temperature, relative humidity, back pressure and in the end the effect of cell number on the fuel cells power. The results may be used to find the best operating conditions. © 2013 IEEE. Source

Discover hidden collaborations