Sulfated zirconium oxide (S-ZrO2) was used as electrode and electrolyte additive for direct methanol fuel cells (DMFCs). Composite Nafion electrolyte membranes and Pt electrocatalysts, both containing S-ZrO2 at different content, were prepared. The morphology and catalytic activity of prepared catalysts were investigated by scanning electron microscopy, and voltammetric technique. Results indicated that Pt/S-ZrO2 catalysts showed enhanced efficiency towards oxygen reduction reaction and increased methanol tolerance as compared to bare platinum. Pt/S-ZrO2-based carbon cloth electrodes were prepared and assembled as cathode in a DMFC, with Nafion/S-ZrO2 as composite electrolyte membrane. With respect to bare platinum and Nafion, higher values of current and power density were recorded at 110 °C. The use of S-ZrO2 both as catalyst and electrolyte additive provided enhanced membrane/electrode interface stability, as revealed by EIS spectra recorded during cell operation. © 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

Iannaci, A., Mecheri, B., D'Epifanio, A., Licoccia, S. (2014). Sulfated zirconium oxide as electrode and electrolyte additive for direct methanol fuel cell applications. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 39(21), 11241-11249 [10.1016/j.ijhydene.2014.05.121].

Sulfated zirconium oxide as electrode and electrolyte additive for direct methanol fuel cell applications

MECHERI, BARBARA;D'EPIFANIO, ALESSANDRA;LICOCCIA, SILVIA
2014-01-01

Abstract

Sulfated zirconium oxide (S-ZrO2) was used as electrode and electrolyte additive for direct methanol fuel cells (DMFCs). Composite Nafion electrolyte membranes and Pt electrocatalysts, both containing S-ZrO2 at different content, were prepared. The morphology and catalytic activity of prepared catalysts were investigated by scanning electron microscopy, and voltammetric technique. Results indicated that Pt/S-ZrO2 catalysts showed enhanced efficiency towards oxygen reduction reaction and increased methanol tolerance as compared to bare platinum. Pt/S-ZrO2-based carbon cloth electrodes were prepared and assembled as cathode in a DMFC, with Nafion/S-ZrO2 as composite electrolyte membrane. With respect to bare platinum and Nafion, higher values of current and power density were recorded at 110 °C. The use of S-ZrO2 both as catalyst and electrolyte additive provided enhanced membrane/electrode interface stability, as revealed by EIS spectra recorded during cell operation. © 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore CHIM/07 - Fondamenti Chimici delle Tecnologie
English
Con Impact Factor ISI
Composite membranes; Electrocatalysts; Electrodes; Electrolytes; Electrolytic reduction; Oxides; Platinum; Scanning electron microscopy; Zirconia; Zirconium alloys, Carbon-cloth electrodes; Composite electrolytes; Direct methanol fuel cells (DMFCs); Interface stabilities; Membrane electrode assemblies; Oxygen reduction reaction; Voltammetric techniques; Zirconia catalysts, Direct methanol fuel cells (DMFC); Direct methanol fuel cell; Membrane electrode assembly; Oxygen reduction reaction; Platinum-sulfated zirconia catalyst
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Iannaci, A., Mecheri, B., D'Epifanio, A., Licoccia, S. (2014). Sulfated zirconium oxide as electrode and electrolyte additive for direct methanol fuel cell applications. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 39(21), 11241-11249 [10.1016/j.ijhydene.2014.05.121].
Iannaci, A; Mecheri, B; D'Epifanio, A; Licoccia, S
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/132424
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