Electrochemical characterization of single cell and short stack PEM electrolyzer based on a nanosized IrO2 anode electrocatalyst (Articolo in rivista)

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  • Electrochemical characterization of single cell and short stack PEM electrolyzer based on a nanosized IrO2 anode electrocatalyst (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.ijhydene.2010.03.102 (literal)
Alternative label
  • Siracusano, S. ; Baglio, V. ; Di Blasi, A. ; Briguglio, N. ; Stassi, A. ; Ornelas, R. ; Trifoni, E. ; Antonucci, V. ; Aricò, A. S. (2010)
    Electrochemical characterization of single cell and short stack PEM electrolyzer based on a nanosized IrO2 anode electrocatalyst
    in International journal of hydrogen energy; Pergamon-Elsevier Science Ltd., Oxford (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Siracusano, S. ; Baglio, V. ; Di Blasi, A. ; Briguglio, N. ; Stassi, A. ; Ornelas, R. ; Trifoni, E. ; Antonucci, V. ; Aricò, A. S. (literal)
Pagina inizio
  • 5558 (literal)
Pagina fine
  • 5568 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 35 (literal)
Rivista
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  • 11 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Tozzi Renewable Energy SpA, Via Zuccherificio, 10-48010 Mezzano (RA), Italy (literal)
Titolo
  • Electrochemical characterization of single cell and short stack PEM electrolyzer based on a nanosized IrO2 anode electrocatalyst (literal)
Abstract
  • A nanosized IrO2 anode electrocatalyst was prepared by a sulfite-complex route for application in a proton exchange membrane (PEM) water electrolyzer. The physicochemical properties of the IrO2 catalyst were studied by termogravimetryedifferential scanning calorimetry (TGeDSC), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The electrochemical activity of this catalyst for oxygen evolution was investigated in a single cell PEM electrolyzer consisting of a Pt/C cathode and a Nafion membrane. A current density of 1.26 A cm-2 was obtained at 1.8 V and a stable behavior during steady-state operation at 80 °C was recorded. The Tafel plots for the overall electrochemical process indicated a slope of about 80 mVdec-1 in a temperature range from 25 °C to 80 °C. The kinetic and ohmic activation energies for the electrochemical process were 70.46 kJ mol-1 and 13.45 kJ mol-1, respectively. A short stack (3 cells of 100 cm2 geometrical area) PEM electrolyzer was investigated by linear voltammetry, impedance spectroscopy and chrono-amperometric measurements. The amount of H2 produced was 80 l h-1 at 60 A under 330W of applied electrical power. The stack electrical efficiency at 60 A and 75 °C was 70% and 81% with respect to the low and high heating value of hydrogen, respectively. (literal)
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