Nafion Titania Nanotubes Nanocomposite Electrolytes for High-Temperature Direct Methanol Fuel Cells

Nonhlanhla Precious Cele, Suprakas Sinha Ray, Lucky Sikhwivhilu
2012 Journal of Nanomaterials  
Nafion-based nanocomposite membranes containing various amounts of titania nanotubes (TNTs) as an inorganic filler have been prepared using melt-mixing method and have been investigated for proton exchange membrane applications. The one-dimensional TNTs have been prepared from potassium hydroxide using hydrothermal route and conventional heating. Nafion R1100 in a protonated form was used, and TNT contents were in a range of 0.5–2.0 wt%. The acid-treated composite membranes, at lowest inorganic
more » ... at lowest inorganic additive content, exhibited improved properties in terms of thermal stability and methanol (MeOH) permeability. The best performing nanocomposite was the membrane containing only 0.5 wt% TNTs showing ionic conductivity value of7.2×10-2 S·cm-1at 26°C and 100% of relative humidity.
doi:10.1155/2012/717913 fatcat:44bspzlirjdpplx2vwcehu7l2q