Details

Autor(en) / Beteiligte

• Marchionni, Andrea
• Bevilacqua, Manuela
• Bianchini, Claudio
• Chen, Yan-Xin
• Filippi, Jonathan
• Fornasiero, Paolo
• Lavacchi, Alessandro
• Miller, Hamish
• Wang, Lianqin
• Vizza, Francesco

Titel

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

Ist Teil von

• ChemSusChem, 2013-03, Vol.6 (3), p.518-528

Ort / Verlag

Weinheim: WILEY-VCH Verlag

Erscheinungsjahr

2013

Quelle

Wiley-Blackwell Journals

Beschreibungen/Notizen

• 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. An excellent electrocatalyst! 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 and direct glycerol fuel cells containing Pd‐(Ni‐Zn)/C as anode electrocatalyst, that is, Pd nanoparticles supported on a Ni–Zn phase. Pd‐(Ni‐Zn)/C can be classified amongst the best performing Pd‐based electrocatalysts ever reported for EG and G oxidation.