Highly Proton-Selective Biopolymer Layer-Coated Ion-Exchange Membrane for Direct Methanol Fuel Cells



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Peels of an onion: New composite proton exchange membranes prepared through layer-by-layer coating of a biopolymer has shown superior methanol barrier properties, while maintaining a high affinity to proton transfer same time. The highly selective skin layer in the composite system significantly increases the fuel utilization efficiency in direct methanol fuel cells (DMFCs).