The objective of this investigation is to study silica-doped/sulfonated poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) composite membranes for operation in hydrogen/oxygen proton-exchange membrane fuel cells ranging from room temperature (RT) up to 120 °C. The sulfonated PPO composite membranes were prepared using a sol–gel process employing reaction with tetra-ethoxysilane (TEOS) followed by heat treatment at 60, 90, and 120 °C, respectively. The presence of silicon oxide in the composite membranes was evaluated using FTIR spectroscopy, while thermal properties were studied using thermal gravimetric analysis-differential scanning calorimetric (TGA-DSC) measurements. Additionally, ion exchange capacity, water uptake, and proton conductivity characterizations were also carried out. It was observed that water uptake for 75% PPO sulfonated composite membrane treated at 120 °C is higher than that of NafionTM membrane and the proton conductivity value measured at 120 °C is 0.35·10−1 S/cm. Therefore, the composite membranes are potentially suitable for high temperature fuel cell applications.
On the Synthesis and Characterization of Silica-Doped/Sulfonated Poly-(2,6-Dimethyl-1,4-Phenylene Oxide) Composite Membranes for Fuel Cells
Washington DC 20520
Washington DC 20520
Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF FUEL CELL SCIENCE AND TECHNOLOGY. Manuscript received December 7, 2012; final manuscript received January 31, 2014; published online March 17, 2014. Assoc. Editor: Jacob Brouwer.
Ebrasu, D., Petreanu, I., Varlam, M., Schitea, D., Stefanescu, I., and Vaseashta, A. (March 17, 2014). "On the Synthesis and Characterization of Silica-Doped/Sulfonated Poly-(2,6-Dimethyl-1,4-Phenylene Oxide) Composite Membranes for Fuel Cells." ASME. J. Fuel Cell Sci. Technol. August 2014; 11(4): 041005. https://doi.org/10.1115/1.4026931
Download citation file: