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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 13:33 |
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Conference: Bucharest University Faculty of Physics 2008 Meeting
Section: Polymer Physics
Title:
Methanol vs. Hydrogen Sulfide Fuel Cell Performances
Authors:
Stefan-Marian Iordache, A. Andronie, M. Mocanu, S. N Stamatin, Mirela Pacala, O. Pacala, Adrian Ciocanea
Affiliation:
3Nano-Sae Research Centre, University of Bucharest
E-mail
stefan@3nanosae.unibuc.ro
Keywords:
methanol, fuel cell, hydrogen sulfide
Abstract:
The need of developing new alternative energy sources has imposed the re-examination and evolvement of fuel cells with different types of fuel such as hydrogen, methanol, hydrogen sulfide and other. The evaluation of the performances of the fuel cells using with above mentioned fuels are leading to new methods and experimental technology based on new types of proton exchange membranes and nanometric catalysts. A comparative study of two fuel types, methanol and respective hydrogen sulfide solutions, on a cell with proton exchange membrane and Pt-PtRu (50%/50% W/W) catalysts is proposed. Cell performances were evaluated for different methanol concentrations (10-30%) and respective for hydrogen sulfide (16,5 mg/l, close to Black Sea level, up to 200 m deep). Open circuit potential values (OCP), ranged between 500-700 mV and polarization curves show the same behavior with current density differences of one order of magnitude. In the case of hydrogen sulfide, colloidal sulfur is formed at a 35 ml/min flow rate due to oxidation reactions. The cell has proved a good potential in hydrogen sulfide for energy generation and for hidrogen sulfide conversion in sulphur a perspective for cleaning waste water.
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