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Autori: G. A. RIMBU, C. L. JACKSON, K. SCOTT
Editorial: JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS, Vol. 8, No. 2, April 2006, p.611-616, 2006.
One of desirable factors in fuel cell systems is to assure a high catalytic activity at the electrode level. This aspect is achieved by depositing the catalyst on high surface area substrate, having the property to be a good electronic conductor and developing in the same time a high ionic conduction. The literature shows different methods of catalyst deposition on carbon substrates, such as Vulcan XC 72R, by a direct chemical reduction of the metallic catalyst, in the presence of a reductant media as formaldehyde solution, or thermal reduction in H2 / N2 atmosphere at over 600oC. In order to evaluate the catalytic performance of supported Pt, we have investigated a proper method for the noble metal deposition on different substrates such as: Vulcan XC 72R, Ketjen Black EC 300J and PANI, which is suitable to give a close performance compared with commercial one. The catalyst performances were investigated by FTIR, XRD, TEM and Cyclic Voltammetry.
Cuvinte cheie: Fuel cells, Catalyst, Ionic conduction, Platinum, Polyaniline