A Study on the Electrochemical Properties of SPEEK/PWA/Silica Composite Membranes

SPEEK/PWA/Silica 복합막의 전기화학적 특성에 관한 연구

  • Oh, Sae-Joong (Department of Chemical and Biochemical Engineering, Sun-Moon University)
  • 오세중 (선문대학교 생명화학공학과)
  • Received : 2013.02.05
  • Accepted : 2013.05.09
  • Published : 2013.05.31


Sol-gel method was utilized to prepare SPEEK/PWA electrolyte composite membranes. TEOS was used as a precursor and phosphotungstic acid(PWA) as a catalyst for the sol-gel reaction. It was observed through FE-SEM analysis that the PWA and silica nanoparticles were uniformly dispersed into the polymer matrix. The water uptake of SPEEK/PWA/silica composite membranes was less affected by TEOS concentration at higher TEOS contents, while the water uptake decreased as TEOS concentration increased at lower TEOS contents. The proton conductivity of the composite membranes showed similar trend as the water uptake of the composite membranes. The methanol permeability of SPEEK/PWA/silica composite membranes decreased as TEOS concentration increased.


Composite membrane;Electrolyte;PWA;Silica;Sol-gel


  1. Satheesh Sambandam and Vijay Ramani, "SPEEK/ functionalized Silica Composite Membranes for Polymer Electrolyte Fuel Cells", J. Power Source, 170, p.259, 2007. DOI:
  2. Zongli Xie, Manh Hoang, Tuan Duong, Derrick Ng, Buu Dao and Stephen Gray," Sol-Gel Derived Poly(vinylalcohol)/Maleic Acid/Silica Hybrid Membrane for Desalina- tion by Pervaporation", J. Membr. Sci., 383, p.96, 2011. DOI:
  3. M. Aparicio, Y. Castro and A. Duran," Synthesis and Characterisation of Proton Conducting Styrene-Co- Methacrylate-Silica Sol-Gel Membranes Containing Tungsto- phosphoric Acid", Solid State Ionics, 176, p.333, 2005. DOI:
  4. B. Smitha, S. Sridhar and A.A. Kim,"Solid Polymer Electrolyte Membranes for Fuel Cell Applications", J. Membr. Sci., 259, p.10, 2005. DOI:
  5. J. Lin, H. Wang and K. Chan,"Nafion- Polyfurfuryl Alcohol Nanocomposite Mem- branes for Direct Methanol Fuel Cells", J. Membr. Sci., 246, p.95-101, 2005. DOI:
  6. Z.Q. Ma, P. Cheng and T.S. Zhao,"A Palladium-Alloy Deposited Nafion Membr- ane for Direct Methanol Fuel Cells", J. Membr. Sci., 215, p.327-336, 2003. DOI:
  7. Hongying Hou, Maria Luisa Di Vona and Philippe Knauth,"Building Bridges: Cross- linking of Sulfonated Aromatic Polymers-A Review", J. Membr. Sci., 423, p.113, 2012. DOI:
  8. Nguyen Thi Que Chi, Dinh Xuan Luu and Dukjoon Kim,"Sulfonated Poly(etherether- ketone) Electrolyte Membranes Cross- Linked with 4,4-diaminodiphenyl Ether", Solid State Ionics, 187, p.78, 2011. DOI:
  9. Dinh Xuan Luu and Dukjoon Kim, "Strontium Cross-Linked sPEEK Proton Exchange Membranes for Fuel Cell", Solid State Ionics, 192, p.627, 2011. DOI:
  10. S.D. mikhailenko, et. al.,"Proton Conducting Membranes Based on Cross-Linked Sulfonated Poly(etheretherketone) (SPEEK)", J. Membr. Sci., 233, p.93, 2004. DOI:
  11. C.W. Lin, and P.H. Chang,"PWA-Doped $PEG/SiO_2$ Proton-Conducting Hybrid Membranes for Fuel Cell Applications", J. Membr. Sci., 254, p.197, 2005. DOI: