Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Preparation and Characterization of Block Copolymer Containing Bisphenyl Propane Unit and Nanosilica Composite Membrane for Fuel Cell Electrolyte Application

비스페닐프로판 단위를 갖는 연료전지전해질용 블록공중합체/나노실리카 복합막 제조 및 특성

  • Received : 2017.03.30
  • Accepted : 2017.04.30
  • Published : 2017.04.30
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Abstract

A proton-conducting bisphenylpropaned sulfonated fluorinated blockcopolymer (BPSFBC) was synthesized. Five kinds of polymer electrolyted composite membranes were preparated by incorporating silica ($SiO_2$) with various weight ratio. And their characteristics were investigated by FT-IR (fourier transform infrared), $^1H-NMR$ ($^1H$ nuclear magnetic resonance), TGA (thermogravimetric analysis), water uptake, FE-SEM (field emission scanning electron microscopes), and ion conductivity properties. The water uptake and ion conductivity were increased until 9 wt% $SiO_2$, and then decreased. The maximum proton conductivity equal to $52mScm^{-1}$ was measured for the BPSFBC/$SiO_2$-9 composite membrane at $90^{\circ}C$ and 100% relative humidity. From the measured results, it is distinct that the manufactured composite membrane BPSFBC/$SiO_2$-9 can be considered as a polymer membrane suitable for a fuel cell electrolyte.

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References

  1. M. A. Smit, A. L. Ocampo, M. A. Espinosa-Medina, and P. J. Sebastian, "A modified nafion membrane with in situ polymerized polypyrrole for the direct methanol fuel cell", J. Power Sources, Vol. 124 , 2003, pp. 59-64. https://doi.org/10.1016/S0378-7753(03)00730-4
  2. M. K. Song, Y. T. Kim, J. M. Fenton, H. R. Kunz, and H. W. Rhee, "Chemically-modified nafion/poly(vinylidene fluoride) blend ionomers for proton exchange membrane fuel cells", J. Power Sources, Vol. 117, 2003, pp. 14-21. https://doi.org/10.1016/S0378-7753(03)00166-6
  3. Q. Guo, P. N. Pintauro, H. Tang, and S. O'Connor, "Sulfonated and crosslinked polyphos phazene-based proton-exchange membranes", J. Membr. Sci., Vol. 154, 1999, pp. 175-181. https://doi.org/10.1016/S0376-7388(98)00282-8
  4. N. Cornet, G. Beaudoing, and G. Gebel, "Influence of the structure of sulfonated polyimide membranes on transport properties", Sep. Purif. Technol., Vol. 22, 2001, pp. 681-687.
  5. M. Gil, X. Ji, X. Li, H. Na, J. E. Hampsey, and Y. Lu, "Direct synthesis of sulfonated aromatic poly(ether ether ketone) proton exchange membranes for fuel cell applications", J. Membr. Sci., Vol. 234, 2004, pp. 75-81. https://doi.org/10.1016/j.memsci.2003.12.021
  6. Y. Gao, G. P. Robertson, M. D. Guiver, X. G. Jian, S. D. Mikhailenko, K. P. Wang, and S. Kaliaguine, "Sulfonation of poly (phthalazinones) with fuming sulfuric acid mixtures for proton exchange membrane materials", J. Membr. Sci., Vol. 227, 2003, pp. 39-50. https://doi.org/10.1016/j.memsci.2003.08.020
  7. Y. Gao, G. P. Robertson, M. D. Guiver, and X. Jian, "Synthesis and characterization of sulfonated poly(phthalazinone ether ketone) for proton exchange membrane materials", J. Polym. Sci., Part A, Gen. Pap., Vol. 41, 2003, pp. 497-507. https://doi.org/10.1002/pola.10601
  8. G. Xiao, G. Sun, D. Yan, P. Zhu, and P. Tao, "Synthesis of sulfonated poly(phthalazinone ether sulfone)s by direct polymerization", Polymer, Vol. 43, 2002, pp. 5335-5339. https://doi.org/10.1016/S0032-3861(02)00365-8
  9. F. Wang, M. Hickner, Y. S. Kim, T. A. Zawodzinski, and J. E. McGrath, "Direct polymerization of sulfonated poly(arylene ether sulfone) random (statistical) copolymers: candidates for new proton exchange membranes", J. Membr. Sci., Vol. 197, 2002, pp. 231-242. https://doi.org/10.1016/S0376-7388(01)00620-2
  10. D. Bikiaris, V. Karavelidis, and G. Karayannidis, "A new approach to prepare poly(ethylene terephthalate)/silica nanocomposites with increased molecular weight and fully adjustable branching or crosslinking by SSP", Macromol. Rapid Commun., Vol. 27, 2006, pp. 1199-1205. https://doi.org/10.1002/marc.200600268
  11. H. Dong, P. Ye, M. Zhong, J. Pietrasik, R. Drumright, and K. Matyjaszewski, "Superhydrophilic surfaces via polymer-SiO2 nanocomposites", Langmuir, Vol. 26, No. 19, 2010, pp. 15567-15573. https://doi.org/10.1021/la102145s
  12. I. Honma, S. Nomura, and H. Nakajima, "Protonic conducting organic/inorganic nano composites for polymer electrolyte membrane", J. Membr. Sci., Vol. 185, No. 1, 2001, pp. 83-94. https://doi.org/10.1016/S0376-7388(00)00636-0
  13. J. T Park, K. J. Lee, M. S. Kang, Y. S. Kang, and J. H. Kim, "Nanocomposite polymer electrolytes containing silica nano particles: comparison between poly(ethylene glycol) and poly(ethylene oxide) dimethyl ether", J. Appl. Polym. Sci., Vol. 106, 2007, pp. 4083-4090. https://doi.org/10.1002/app.26951
  14. A. R. Kim, M. Vinothkannan, and D. J. Yoo, "Sulfonated-fluorinated copolymer blending membranes containing SPEEK for use as the electrolyte in polymer electrolyte fuel cells (PEFC)", Int. J. Hydrogen Energy, Vol. 42, 2017, pp. 4349-4365. https://doi.org/10.1016/j.ijhydene.2016.11.161
  15. Y. Chikasige, Y. Chikyu, K. Miyatake, and M. Watanabe, "Poly(arylene ether) ionomers containing sulfofluorenyl groups for fuel cell applications", Macromolecules, Vol. 38, 2005, pp. 7121-7126. https://doi.org/10.1021/ma050856u
  16. R. W. Kopitzke, C. A. Linkous, H. R. Anderson, and G. L. Nelson, "Conductivity and water uptake of aromatic-based proton exchange membrane electrolytes", J. Electrochem. Soc., Vol. 147, 2000, pp. 1677-1681. https://doi.org/10.1149/1.1393417
  17. G. Kumar, A. R. Kim, K. S. Nahm, D. J. Yoo, and R. Elizabeth, "High ion and lower molecualr transportation of the poly vinylidene fluoride-hexafluoropropylene hybrid membranes for the high temperature and lower humidity direct methanol fuel cell applications", J. Power Sources, Vol. 195, 2010, pp. 5922-5928. https://doi.org/10.1016/j.jpowsour.2009.11.021