Browsing by Subject "Fuel cells"

Now showing items 1-20 of 81

  • Amorphous carbon modified nano-sized tungsten carbide as a gas diffusion electrode catalyst for the oxygen reduction reaction 

    Liu, Zhiwei; Li, Ping; Zhai, Fuqiang; Wan, Qi; Volinsky, Alex A.; Qu, Xuanhui (2015-01-01)
    Article
    Open Access
    Nanostructured tungsten carbide with high surface area and containing amorphous carbon is prepared by a low temperature combustion synthesis method. The nanostructured tungsten carbide is used as the catalyst in a gas ...

  • Analyses of energy management strategies for a PEMFC/UC electric vehicle 

    Bethoux, Olivier; Remy, G.; Riera, Jordi (Riera Colomer); Serra, Maria; Azib, T. (2012)
    Conference report
    Restricted access - publisher's policy
    In this paper, two energy management strategies considering the hydrogen consumption of hybrid power sources using a PEM Fuel Cell (FC) and Ultracapacitors (UC) are described and compared. First, the Hybrid Electric ...

  • Analysis of droplet dynamics on the GDL surface of a PEM fuel cell cathode 

    Jarauta Arabí, Alexandre (Universitat Politècnica de Catalunya, 2013-06-28)
    Master thesis
    Open Access
    A fuel cell is an electrochemical device that has the ability to turn the chemical energy in a fuel directly into electricity with high e ciency. Inside the fuel cell, oxidation and reduction electrochemical reactions ...

  • Analysis of the control structures for an integrated ethanol processor for proton exchange membrane fuel cell systems 

    Biset, S; Nieto Deglioumini, Lucas; Basualdo, Marta; Garcia Mariel, Vanesa; Serra, Maria (2009)
    Article
    Open Access
    The aim of this work is to investigate which would be a good preliminary plantwide control structure for the process of Hydrogen production from bioethanol to be used in a proton exchange membrane (PEM) accounting only ...

  • Anode-supported SOFC Operated Under Single-chamber Conditions at Intermediate Temperatures 

    Morales, Miguel; Roa Rovira, Joan Josep; Capdevila, X.G.; Segarra, M.; Piñol, S. (2011-02-02)
    Article
    Restricted access - publisher's policy
    Anode-supported SOFC was fabricated using gadolinia doped ceria (GDC) as the electrolyte (15 lm of thickness), Ni-GDC as the anode and La0.5Sr0.5CoO3 – d-GDC as the cathode. Catalytic activities of the electrodes and ...

  • A novel energy management strategy for fuel-cell/supercapacitor hybrid vehicles 

    Carignano, Mauro; Costa Castelló, Ramon; Nigro, Norberto; Junco, Sergio (2017-07-01)
    Article
    Open Access
    Hybrid platforms powered by fuel cell and supercapacitor represent a powertrain with active state-dependent constraints, providing an adverse scenario for the energy management. In these platforms, the performance of the ...

  • A novel energy management strategy for fuel-cell/supercapacitor hybrid vehicles. 

    Carignano, Mauro; Costa Castelló, Ramon; Nigro, Norberto; Junco, Sergio (Elsevier, 2017)
    Conference report
    Open Access
    Hybrid platforms powered by fuel cell and supercapacitor represent a powertrain with active state-dependent constraints, providing an adverse scenario for the energy management. In these platforms, the performance of the ...

  • A semi-analytical model for droplet dynamics on the GDL surface of a PEFC electrode 

    Jarauta Arabí, Alexandre; Secanell, Marc; Pons Prats, Jordi; Ryzhakov, Pavel; Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio (2015-04)
    Article
    Open Access
    Water management is one of the key factors in Proton Exchange Fuel Cell (PEFC) performance. The water produced within the fuel cell is evacuated through the gas channels, but at high current densities water can block the ...

  • Assessment of energy management in a fuel cell/battery hybrid vehicle 

    Carignano, Mauro; Roda Serrat, Vicente; Costa Castelló, Ramon; Valiño, Luis; Lozano Fantoba, Antonio; Barreras Toledo, Felix Manuel (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Article
    Restricted access - publisher's policy
    The energy management strategy plays a major role in hybrid platforms powered by fuel cells (FCs) and batteries. This paper presents an assessment of energy management focused on fuel economy and battery degradation. ...

  • Biogas biological desulphurisation under extremely acidic conditions for energetic valorisation in Solid Oxide Fuel Cells 

    de Arespacochaga, N.; Valderrama Angel, César Alberto; Mesa, C.; Bouchy, Lynne; Cortina Pallás, José Luís (2014-11-01)
    Article
    Restricted access - publisher's policy
    The most harmful biogas contaminant for energy conversion equipment such as fuel cells is hydrogen sulphide (H2S); thus efficient and cost-effective treatment systems for this compound should be designed and developed. A ...

  • Characterization of voltage loss for proton exchange membrane fuel cell 

    Elia, Gaia'd (Universitat Politècnica de Catalunya, 2015-06-09)
    Bachelor thesis
    Open Access
    Les piles de combustible són, cada dia més, una alternativa als clàssics vectors energètics. La utilització de l’hidrogen com a font energètica suposa una important reducció d’emissions i costos, tot i que la tecnologia ...

  • Cogeneració amb piles de combustible: aplicació a edificis de la UPC 

    Martínez, Cristina; Sánchez, Carlos; Sancho, Javier; Simon, Javier; Pretel Sánchez, Carme; Llorca Piqué, Jordi (Centre per a la Sostenibilitat, 2009-07-09)
    Conference report
    Open Access
    Les piles de combustible són dispositius electroquímics que transformen directament l’energia d’un combustible químic en energia elèctrica i calor. Entre els seus avantatges destaquen una eficiència energètica molt elevada, ...

  • Comparative life-cycle assessment of residential heating systems, focused on solid oxide fuel cells 

    Cánovas Creus, Alba (Universitat Politècnica de Catalunya, 2012-07)
    Master thesis
    Restricted access - author's decision

  • Control d’una estació híbrida per la gestió d’energia d’un sistema basat en pila de combustible 

    Paredes Guardiola, Juan Francisco (Universitat Politècnica de Catalunya, 2015-10)
    Master thesis (pre-Bologna period)
    Open Access
    Aquest projecte consisteix en l’estudi de la gestió de l’energia d’un sistema que funciona amb pila de combustible. El projecte va sorgir al visitar l’Institut de Robòtica Industrial (IRI) de la UPC, on hi tenen instal·lada ...

  • Control for power conditioner based PEM fuel cell and back-up power system with supercapacitor 

    Trujillo Caballero, Juan Carlos; Gomis Bellmunt, Oriol; Montesinos Miracle, Daniel; Sumper, Andreas; Sudrià Andreu, Antoni; Junyent Ferré, Adrià (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
    Conference report
    Restricted access - publisher's policy
    This paper presents a new control strategy to operate a Proton Exchange Membrane Fuel Cell (PEMFC) 1,2 kW and supercapacitor (SC) through a hybrid converter proposed. The Fuel Cell (FC) has a slow dynamic device by its ...

  • Control-oriented thermal modeling methodology for water-cooled PEM fuel-cell-based systems 

    Rojas Fernández, José David; Kunusch, Cristian; Ocampo-Martínez, Carlos; Puig Cayuela, Vicenç (Institute of Electrical and Electronics Engineers (IEEE), 2015-02-24)
    Article
    Open Access
    In this paper, a new control-oriented modeling methodology for the thermal dynamics of water-cooled Proton Exchange Membrane Fuel Cells (PEMFCs) is presented and validated. This methodology is not only useful for control ...

  • Correlation between electrical and mechanical properties in La1-XSrXGa1-YMgYO3-¿ ceramics used as electrolytes for solid oxide fuel cells 

    Morales Comas, Miguel; Roa Rovira, Joan Josep; Pérez Falcón, José Manuel; Moure Arroyo, Alberto; Tartaj, Jesus; Espiell Álvarez, Ferran; Segarra Rubi, Merce (2014)
    Article
    Restricted access - publisher's policy
    The relation between the electrical and the mechanical properties in Sr and Mg doped LaGaO3 ceramics, which can be used as electrolyte for solid oxide fuel cells, was investigated in terms of hardness and ionic conductivity. ...

  • Correlation between electrical and mechanical properties in La1-xSrxGa1-yMgyO3-d ceramics used as electrolytes for solid oxide fuel cells 

    Morales Comas, Miguel; Roa Rovira, Joan Josep; Pérez Falcón, José Manuel; Moure Arroyo, Alberto; Tartaj, Jesus; Espiell Álvarez, Ferran; Segarra Rubi, Merce (2014)
    Article
    Restricted access - publisher's policy
    The relation between the electrical and the mechanical properties in Sr and Mg doped LaGaO3 ceramics, which can be used as electrolyte for solid oxide fuel cells, was investigated in terms of hardness and ionic conductivity. ...

  • Design and Control of an Electric Energy Conditioning System for a PEM Type Fuel Cell 

    Malo Barragán, Shane Leonardo (Universitat Politècnica de Catalunya, 2009-12-02)
    Doctoral thesis
    Open Access
    Isolated electric energy generation systems are often needed to supply electric loads where the electrical network is not available. This could be caused due to geographic isolation, the necessity of load mobility, demanded ...

  • Detecció de fallades en un sistema de piles de combustible 

    Escobet Canal, Antoni; Nebot Castells, M. Àngela (2010-02-15)
    External research report
    Open Access
    In this work a fault diagnosis system for non-linear plants based on fuzzy logic, called VisualBlock-FIR, is presented and applied to an energy generation system based on fuel cells. VisualBlock-FIR runs under the Simulink ...