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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:26 |
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Conference: Bucharest University Faculty of Physics 2012 Meeting
Section: Physics and Technology of Alternative Renewable Energy Supplies
Title:
Electrochemical characterization of Cu and Cu-Fe nanoparticles, used as catalyst in fuel cells
Authors:
Ana-Maria DUCU, S.M. IORDACHE, C CEAUS, L POPOVICI, Nicoleta BANU, Cristina SERBAN, Ana CUCU, Alexandra TREFILOV, I. STAMATIN
Affiliation:
University of Bucharest, Faculty of Physics,3Nano-Sae Research Center,
E-mail
office@3nanosae.org
Keywords:
copper-iron, catalyst, fuel cells, graphite oxide
Abstract:
Over the years, different metals have been investigated for replacing Pt in fuel cells; among all, copper has the highest thermal and electrical conductivity and it is also malleable. In this study, nanoparticles of Cu and Cu-Fe, deposited onto various nanocarbons, have been synthesized via two chemical methods and were investigated by electrochemical means, dynamic light scattering (DLS) and SEM. DLS was employed for particle size measurements and confirmed that all the dimensions were below 100 nm, while SEM was used to obtain images of the carbonic substrate (GOx - graphite oxide). The electrochemical analysis revealed important oxidation and reduction peaks, in acidic media, while in alkaline media the catalyst was inactivated. The alloyed nanoparticles obtained via polyol synthesis were annealed at medium temperature and were investigated by electrochemical analysis in an hidroalcoholic solution. We`ve obtained good results for both Cu and Cu-Fe nanocatalysts.
Note:This work was financially supported by contract PNCDI-II-IDEI/64/2011
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