Heteropolyacid-modified polymer silica membranes for Direct Methanol Fuel Cells have been prepared and tested under high temperature operation conditions (145°C) in single cell configuration. A maximum power density of 0.4 W/cm2 in oxygen with 2 M methanol has been obtained; with air at the cathode, this value decreased to 0.25 W/cm2. The higher performance of the heteropolyacid-Nafion-silica membrane, with respect to Nation-silica, is attributed to its better ion transport properties, since the measured cell resistance value is similar for both membranes.
Polymer-silica composite membranes for Direct Methanol Fuel Cells / Antonucci, V.; Arico', A. S.; Modica, E.; Creti', P.; Staiti, P.; Antonucci, Pierluigi. - 140:(2001), pp. 37-45. (Intervento presentato al convegno Oxide-based systems at the crossroads of chemistry,Second International Workshop tenutosi a Como nel 8-11 ottobre 2000).
Polymer-silica composite membranes for Direct Methanol Fuel Cells
ANTONUCCI, Pierluigi
2001-01-01
Abstract
Heteropolyacid-modified polymer silica membranes for Direct Methanol Fuel Cells have been prepared and tested under high temperature operation conditions (145°C) in single cell configuration. A maximum power density of 0.4 W/cm2 in oxygen with 2 M methanol has been obtained; with air at the cathode, this value decreased to 0.25 W/cm2. The higher performance of the heteropolyacid-Nafion-silica membrane, with respect to Nation-silica, is attributed to its better ion transport properties, since the measured cell resistance value is similar for both membranes.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
