Anhydrous Proton Conducting Hybrid Membrane Electrolytes for High Temperature (> 100 degrees C) Proton Exchange Membrane Fuel Cells

作者：Lakshminarayana G^*; Vijayaraghavan R; Nogami Masayuki; Kityk I V

来源：Journal of the Electrochemical Society, 2011, 158(4): B376-B383.

DOI：10.1149/1.3546041

Anhydrous proton conducting hybrid membranes were prepared by the sol-gel process with trimethoxysilane (TMOS)/trimethoxypropylsilane (TMPS)/triethyl phosphate (TEP) and BMIMBF(4) ionic liquid as precursors. The Fourier transform infrared and NMR measurements have shown good chemical stability of these hybrid membranes. Average pore sizes and specific surface areas were investigated by the Brunauer-Emmett-Teller method. Thermogravimetric analysis and differential thermal analysis measurements confirmed that the hybrid membranes were thermally stable up to 250 degrees C. Maximum anhydrous conductivity of 6.4 x 10(-3) S/cm was obtained for 40 wt % ionic liquid based hybrid membrane, at 150 degrees C, with a hydrogen permeability value of 0.8 x 10(-12) mol/cm s Pa.

• 出版日期2011