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, 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.File in questo prodotto:
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