Free-standing Chitosan/phosphotungstic acid polyelectrolyte membranes were prepared by an easy and fast in-situ ionotropic gelation process performed at room temperature. Scanning electron microscopy was employed to study their morphological features and their thickness as a function of the chitosan concentration. The membrane was tested as proton conductor in low temperature H2-O2 fuel cell allowing to get peak power densities up to 350 mW cm-2. Electrochemical impedance measurements allowed to estimate a polyelectrolyte conductivity of 18 mS cm-1.
Santamaria, M., Pecoraro, C., Di Quarto, F., Bocchetta, P. (2015). Chitosan-phosphotungstic acid complex as membranes for low temperature H2-O2 fuel cell. JOURNAL OF POWER SOURCES, 276, 189-194 [10.1016/j.jpowsour.2014.11.147].
Chitosan-phosphotungstic acid complex as membranes for low temperature H2-O2 fuel cell
SANTAMARIA, Monica;PECORARO, CLAUDIO MARIA;DI QUARTO, Francesco;
2015-01-01
Abstract
Free-standing Chitosan/phosphotungstic acid polyelectrolyte membranes were prepared by an easy and fast in-situ ionotropic gelation process performed at room temperature. Scanning electron microscopy was employed to study their morphological features and their thickness as a function of the chitosan concentration. The membrane was tested as proton conductor in low temperature H2-O2 fuel cell allowing to get peak power densities up to 350 mW cm-2. Electrochemical impedance measurements allowed to estimate a polyelectrolyte conductivity of 18 mS cm-1.
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