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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 2:29 |
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Conference: Bucharest University Faculty of Physics 2013 Meeting
Section: Physics and Technology of Alternative Renewable Energy Supplies
Title:
Direct Ethanol Fuel Cell
Authors:
Andrei Tesileanu, Ioan Stamatin , Sanda Voinea
Affiliation:
University of Bucharest, Faculty of Physics,3Nano-SAE Research Center, 405 Atomistilor str., Bucharest-Magurele, 077125,Romania.
E-mail
sandavoinea@yahoo.co.uk
Keywords:
DEFC, Pt, Ru, cyclic voltammetry, impedance spectroscopy
Abstract:
The problems regarding the consumption of fossil fuels and the need to reduce the environmental impact have generated an increasing interest for alternative energy sources. Fuel cells are regarded as a possible solution, especially when dealing with mobile applications or when locally generated power is needed. Direct ethanol fuel cells (DEFC’s), which belong to the category of proton exchange membrane fuel cells (PEMFC’s) and use liquid fuel at room temperature, can supply an amount of electric power that is sufficient for powering small portable devices. In this study the power output of a Pt-Ru/ Pt DEFC was studied while supplying both low and high molar concentrations of ethanol solutions. In the first step a 0.25M ethanol solution was supplied as a fuel. In the second step, the concentration was raised, resulting a solution with an ethanol concentration of approximately 8.4M, obtained by mixing equal volumes of ethanol and distilled water. Each time, the volume of the solutions used was 0.200 L. Cyclic voltammetry and electrochemical impedance spectroscopy measurements were performed on the fuel cell running on the two solutions, while the density and conductivity of the solution were measured both before and after the experiment.
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