Sequential Reduction Synthesis and Development of Carbon Supported Pt-Ru Direct Methanol Fuel Cell Anode Catalysts
Öz
Nowadays, direct fueled fuel cells are among the most studied subjects due to their advantages such as easy portability, refueling and high energy conversion. Pt is a good catalyst for the synthesis of small organic molecules, but Pt is poisoned by the CO gas generated at the low temperatures that the fuel cells operate. It has been reported in the studies about direct methanol feed fuel cell that Pt-Ru catalyst is a good methanol fuel cell catalyst, but when Ru is added, why and how the catalytic activity is increased is still unanswered. In order to answer these questions, preparation of new generation active catalysts is crucial for overcoming existing problems such as poisoning. This work was done to investigate the activities of methanol fuel cell anode catalysts. The catalyts were prepared via sequential reduction method and the effect of catalyst preparation method on methanol electrooxidation activity was investigated. In the measurements performed on carbon supported Rushell-Ptcore (Pt@Ru/C) and Ptshell-Rucore (Ru@Pt/C) catalysts, the results show Ru@Pt/C catalyst having higher activity.
Anahtar Kelimeler
Kaynakça
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