
Electrocatalytic isopropanol oxidation for direct organic fuel cells
Title:
Electrocatalytic isopropanol oxidation for direct organic fuel cells
Author:
Çetin, Yağmur, author.
Personal Author:
Physical Description:
xii, 65 leaves: color illustrarions, charts;+ 1 computer laser optical disc
Abstract:
Due to the ever-increasing population and accompanying energy consumption rates, the need of finding renewable energy resources, making them accessible and ready to utilize have become crucial investigation areas. In recent years, hydrogen carriers and fuel cell systems have emerged as good alternatives to conventional fossil fuel dependent energy generation systems. For this study, isopropanol-acetone couple was selected as the hydrogen carrier and the reaction kinetics were investigated. The electrocatalytic oxidation of isopropanol has garnered significant interest due to its relevance in fuel cell applications and energy storage devices. This thesis focused on the electrocatalytic oxidation behavior of isopropanol by utilizing commercial catalysts, namely Pt/C, Cu/C, Pt-Cu(1:1)/C, Pt-Cu(3:1)/C, and Pt-Ru/C. Activity, selectivity, and stability of each electrocatalyst investigated under different reaction conditions, aiming to improve the performance of the oxidation reaction in alkaline medium. The electrochemical performance of these catalysts were evaluated through Cyclic Voltammetry (CV), Electrochemical Impedance Spectroscopy (EIS), and Chronoamperometry (CA) analysis. The results demonstrate the superiority of the Pt-Cu alloys, exhibiting higher catalytic activity and lower kinetic resistance compared to other Pt-based catalysts. This improved performance is attributed to the strong affinity of Cu to OH- species, which enhances the isopropanol oxidation rate and promotes the overall electrocatalytic activity. Overall, this study provides valuable insights into the kinetics of isopropanol electrooxidation and highlights the potential of Pt-Cu alloy as a promising catalyst for efficient alcohol oxidation in various electrochemical systems.
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Thesis (Master)--İzmir Institute of Technology:Energy Engineering.
İzmir Institute of Technology: Energy Engineering--Thesis (Master).
Electronic Access:
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