Iron phthalocyanine (FePc) was used as iron/nitrogen/carbon source and templated with an ordered mesoporous silica (SBA-15), followed by heat treatment and leaching of SiO2 with hydrofluoric acid (sacrificial method). The catalyst was investigated in a single cell configuration of a direct methanol fuel cell (DMFC) and direct ethanol fuel cell (DEFC) under different alcohol concentrations and temperatures. The optimal operating condition was found to be 1 and 2 M at 90° (MeOH and EOH), reaching 19.6 mW cm–2 for DMFC and 74.7 mW cm–2 for DEFC, using a commercial Pt-Ru black at the anode and the Fe-N-C at the cathode side, respectively. A 3D multiphysic model was implemented to further explain the experimental DMFC and DEFC performance data using a commercial platform (Comsol® Multiphysic v4.4a). The model agreed with the experimental data, showing a direct relationship among water saturation, and oxygen consumption, consequently oxygen starvation at the cathodic catalytic layer. The model considered two phases on the cathode side computed by extended Darcy law within the catalytic layer and the gas diffusion layer domains.

Influence of flooding on DMFC and DEFC performance using non noble catalyst: alkaline vs acid conditions / Vasile, N.S.; Osmieri, L.; Monteverde Videla, A.H.; Escudero Cid, R.; Ocon, P.; Specchia, S.. - ELETTRONICO. - (2016). ((Intervento presentato al convegno The International Conference on Electrochemical Energy Science and Technology (EEST2016) tenutosi a Kunming (P.R. China) nel 16-22/08/2016.

Influence of flooding on DMFC and DEFC performance using non noble catalyst: alkaline vs acid conditions

VASILE, NICOLO' SANTI;OSMIERI, LUIGI;MONTEVERDE VIDELA, ALESSANDRO HUGO;SPECCHIA, STEFANIA
2016

Abstract

Iron phthalocyanine (FePc) was used as iron/nitrogen/carbon source and templated with an ordered mesoporous silica (SBA-15), followed by heat treatment and leaching of SiO2 with hydrofluoric acid (sacrificial method). The catalyst was investigated in a single cell configuration of a direct methanol fuel cell (DMFC) and direct ethanol fuel cell (DEFC) under different alcohol concentrations and temperatures. The optimal operating condition was found to be 1 and 2 M at 90° (MeOH and EOH), reaching 19.6 mW cm–2 for DMFC and 74.7 mW cm–2 for DEFC, using a commercial Pt-Ru black at the anode and the Fe-N-C at the cathode side, respectively. A 3D multiphysic model was implemented to further explain the experimental DMFC and DEFC performance data using a commercial platform (Comsol® Multiphysic v4.4a). The model agreed with the experimental data, showing a direct relationship among water saturation, and oxygen consumption, consequently oxygen starvation at the cathodic catalytic layer. The model considered two phases on the cathode side computed by extended Darcy law within the catalytic layer and the gas diffusion layer domains.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2648551
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