A PFSA Composite Membrane with Sulfonic Acid Functionalized TiO2 Nanotubes for Polymer Electrolyte Fuel Cells and Water Electrolysers

作者：Wu X^*; Scott K

来源：Fuel Cells, 2013, 13(6): 1138-1145.

DOI：10.1002/fuce.201200040

• Composite Membrane
• PEMFC
• PEMWE
• Polymer Electrolyte Membrane
• Titanate Nanotube
• Titania

Titanate nanotubes (TiO2-NT) were functionalized with sulfonic acid functional groups and characterized with Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). Results confirmed that sulfonic acid groups were grafted onto TiO2-NT with a uniform distribution. When the functionalized titanate nanotube (F-TiO2-NT) was incorporated in perfluorosulfonic acid membranes, the membrane conductivity and water uptake were improved. Polymer electrolyte membrane (PEM) fuel cells using 5wt.% F-TiO2-NT incorporated composite membrane exhibited a peak power density of 429mWcm(-2) with non-humidified O-2 at 90 degrees C, which is about four times higher than that with Nafion 117 membrane at identical conditions. PEMWE with 5wt.% F-TiO2-NT incorporated composite membrane achieved 1,000mAcm(-2) current density at voltages below 1.6V at 90 degrees C without back pressurizing.

• 出版日期2013-12