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Electrooxidation of Ethylene Glycol and Glycerol on Pd-(Ni-Zn)/C Anodes in Direct Alcohol Fuel Cells

Authors

  • Dr. Andrea Marchionni,

    1. Istituto di Chimica dei Composti Organometallici, Consiglio Nazionale delle Ricerche via Madonna del Piano 10, 50019 Sesto Fiorentino (Italy), Fax: (+39) 0555225203
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  • Dr. Manuela Bevilacqua,

    1. Istituto di Chimica dei Composti Organometallici, Consiglio Nazionale delle Ricerche via Madonna del Piano 10, 50019 Sesto Fiorentino (Italy), Fax: (+39) 0555225203
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  • Dr. Claudio Bianchini,

    1. Istituto di Chimica dei Composti Organometallici, Consiglio Nazionale delle Ricerche via Madonna del Piano 10, 50019 Sesto Fiorentino (Italy), Fax: (+39) 0555225203
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  • Dr. Yan-Xin Chen,

    1. Istituto di Chimica dei Composti Organometallici, Consiglio Nazionale delle Ricerche via Madonna del Piano 10, 50019 Sesto Fiorentino (Italy), Fax: (+39) 0555225203
    2. Department of Chemistry, ICCOM-CNR-Trieste, CENMAT, University of Trieste via L. Giorgeri 1, 34127 Trieste (Italy)
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  • Dr. Jonathan Filippi,

    1. Istituto di Chimica dei Composti Organometallici, Consiglio Nazionale delle Ricerche via Madonna del Piano 10, 50019 Sesto Fiorentino (Italy), Fax: (+39) 0555225203
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  • Dr. Paolo Fornasiero,

    1. Department of Chemistry, ICCOM-CNR-Trieste, CENMAT, University of Trieste via L. Giorgeri 1, 34127 Trieste (Italy)
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  • Dr. Alessandro Lavacchi,

    1. Istituto di Chimica dei Composti Organometallici, Consiglio Nazionale delle Ricerche via Madonna del Piano 10, 50019 Sesto Fiorentino (Italy), Fax: (+39) 0555225203
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  • Dr. Hamish Miller,

    1. Istituto di Chimica dei Composti Organometallici, Consiglio Nazionale delle Ricerche via Madonna del Piano 10, 50019 Sesto Fiorentino (Italy), Fax: (+39) 0555225203
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  • Dr. Lianqin Wang,

    1. Istituto di Chimica dei Composti Organometallici, Consiglio Nazionale delle Ricerche via Madonna del Piano 10, 50019 Sesto Fiorentino (Italy), Fax: (+39) 0555225203
    2. Department of Chemistry, ICCOM-CNR-Trieste, CENMAT, University of Trieste via L. Giorgeri 1, 34127 Trieste (Italy)
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  • Dr. Francesco Vizza

    Corresponding author
    1. Istituto di Chimica dei Composti Organometallici, Consiglio Nazionale delle Ricerche via Madonna del Piano 10, 50019 Sesto Fiorentino (Italy), Fax: (+39) 0555225203
    • Istituto di Chimica dei Composti Organometallici, Consiglio Nazionale delle Ricerche via Madonna del Piano 10, 50019 Sesto Fiorentino (Italy), Fax: (+39) 0555225203
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Abstract

The electrooxidation of ethylene glycol (EG) and glycerol (G) has been studied: in alkaline media, in passive as well as active direct ethylene glycol fuel cells (DEGFCs), and in direct glycerol fuel cells (DGFCs) containing Pd-(Ni-Zn)/C as an anode electrocatalyst, that is, Pd nanoparticles supported on a Ni–Zn phase. For comparison, an anode electrocatalyst containing Pd nanoparticles (Pd/C) has been also investigated. The oxidation of EG and G has primarily been investigated in half cells. The results obtained have highlighted the excellent electrocatalytic activity of Pd-(Ni-Zn)/C in terms of peak current density, which is as high as 3300 A g(Pd)−1 for EG and 2150 A g(Pd)−1 for G. Membrane-electrode assemblies (MEA) have been fabricated using Pd-(Ni-Zn)/C anodes, proprietary Fe-Co/C cathodes, and Tokuyama A-201 anion-exchange membranes. The MEA performance has been evaluated in either passive or active cells fed with aqueous solutions of 5 wt % EG and 5 wt % G. In view of the peak-power densities obtained in the temperature range from 20 to 80 °C, at Pd loadings as low as 1 mg cm−2 at the anode, these results show that Pd-(Ni-Zn)/C can be classified amongst the best performing electrocatalysts ever reported for EG and G oxidation.

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