Layer-by-Layer Self-Assembly of Composite Polyelectrolyte–Nafion Membranes for Direct Methanol Fuel Cells


  • Z. Liu thanks the Nanyang Technological University for a research student scholarship. The project is supported by the Agency for Science, Technology and Research (A*Star) under SERC grant 052 101 0035.


original image

A novel composite polyelectrolyte– Nafion membrane is demonstrated that is fabricated using the layer-by-layer self-assembly of oppositely charged polyelectrolytes. A direct methanol fuel cell based on such a membrane is shown to achieve a significant reduction in methanol crossover (see figure) and an increase in power density of 42 %, in comparison to that which uses a pristine Nafion membrane.