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

Figure 7

Nyquist plots of Nafion and its TNTs-based nanocomposite membranes, with different TNTs loadings ranging from 0.5 to 2.0 wt%, measurements done at room temperature (26°C) and 100% relative humidity.