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. 2006 May 15;21(11):2064-9.
doi: 10.1016/j.bios.2006.01.022. Epub 2006 Mar 10.

Biomembranes for Fuel Cell Electrolytes Employing Anhydrous Proton Conducting Uracil Composites

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Biomembranes for Fuel Cell Electrolytes Employing Anhydrous Proton Conducting Uracil Composites

Masanori Yamada et al. Biosens Bioelectron. .

Abstract

The controls of proton transfer through membranes involve fundamental properties of chemical energy conversion in industrial devices as well as living systems. In particular, ion-exchange membranes are generally used as superior proton conductors for polymer electrolyte fuel cells (PEFC) due to the fluidic nature of water, although the cell operation above the boiling point (>100 degrees C) has been considered to provide a higher efficiency and an easier humidity management. We show that biomembranes consisting of uracil and chitin phosphate have large anhydrous proton conductivities over a wide temperature range from room temperature to 160 degrees C with sufficient thermal stabilities. Water-free conductivities exceeding 10(-3) S cm(-1) have been obtained in the elastic polymeric material, and the fuel cell employing the biomembrane as an electrolyte exhibited a stable current generation under non-humidified H2/O2 conditions at 160 degrees C.

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