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Su, Yu-Huei; Liu, Ying-Ling; Sun, Yi-Ming; Wang, Da-Ming; Lai, Juin-Yih; Guiver, Michael
Poster Session II – 122
Tuesday July 15, 6:30 PM-9:30 PM, Lana’i Ballroom
Polyelectrolyte-Silica Nanocomposite Based Proton Exchange Membranes for DMFC: Enhancements on Proton Conductivity with Formation of Proton Transport Channels
Y. Su (Presenting author), Institute of Polymer Science and Engineering, National Taiwan University ;, No. 493, Sinchung N. Rd., Chungli City, Taoyuan County 320, Taiwan.
Y. Liu (Corresponding author), Department of Chemical Engineering ; R&D Center for Membrane Technology, Ch, No. 493, Sinchung N. Rd., Chungli City, Taoyuan County 320, Taiwan.,
ylliu@cycu.edu.tw
Y. Sun, Department of ChemicalEngineering and Material Science, Yuan Ze University, No. 493, Sinchung N. Rd., Chungli City, Taoyuan County 320, Taiwan
D. Wang, Institute of Polymer Science and Engineering, National Taiwan University ;, No. 493, Sinchung N. Rd., Chungli City, Taoyuan County 320, Taiwan
J. Lai, Department of Chemical Engineering ; R&D Center for Membrane Technology, Ch, No. 493, Sinchung N. Rd., Chungli City, Taoyuan County 320, Taiwan
M. Guiver, . Institute for Chemical Process and Environmental Technology, National Res,
Nanocomposite proton exchange membranes were prepared from sulfonated poly(arylene ether ether ketone ketone) (SPAEEKK) and silica nanoparticles (silica-OH & silica-SO3H). The polyelectrolyte membranes modified with silica
nanoparticles show improved thermal stability, suppressed water uptake, and decreased methanol permeability. While sulfonated silica nanoparticles (silica- SO3H) was employed in modification, the proton conductivity of the resulted
membrane was higher than that of pristine SPAEEKK membrane and that of SPAEEKK/silica-OH nanocomposite membrane, yet with a decrease in its IEC value compared with that of pristine SPAEEKK. It is perceived that the ionic interaction between the sulfonated silica nanoparticles and the sulfonated polymer play an important part on property improvements. To have a better understanding, the transport behavior of the nanocomposite proton exchange membranes, such as proton transport and methanol permeability, in relation to the state of water, chemical morphology in the membrane were investigated and understood. Collectively, this study offers great potential for designing
