Nano Composite Membranes of Sulfonated Poly(ether sulfone)s Containing Tetraphenylethylene moiety and SiO₂ for PEMFC

Abstract:

Conjugated cis/trans isomer-based polymer membranes were prepared with 25 mol% of bis (4-hydroxyphenyl)-1,2-diphenylethylene (BHDPE). BHDPE has a conjugated nonplanar conformation structure containing the peripheral four aromatic rings which facilitate the formation of π-π interactions. A series of sulfonated poly (ethersulfone) s (SPBHDPE) was synthesized with concentrated sulfuric acid. The sulfonation took place selectively on the BHDPE unit, and simultaneously on the side-chain and main-chain phenyl groups. The SPBHDPEs consisted of a 4:6 ratio of cis and trans form mixtures. Composite membranes were prepared with copolymers and SiO₂ nanoparticles (20 nm, 4~10%wt). The composite membranes were cast from DMSO. A series of composite membranes structures and characteristic were evaluated by the ¹H-NMR spectroscopy, and thermal stabilities. The membranes were performed by ion exchange capacity (IEC), water uptake and proton conductivity.

• Periodical: Advanced Materials Research (Volume 746)
• Pages: 78-82
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.746.78
• Online since: August 2013
• Authors: Young Don Lim, Soon Ho Lee, Md. Awlad. Hossain, Seong Young Choi, Jin Seong Lim, In Seok Jeong, Yeong Lim Yoo, Taew Han Hong, Whan Gi Kim
• Keywords: Electrolyte, Membrane, Nanocomposite, PEMFC, SiO₂, Tetraphenylethylene

References

[1] K.A. Mauritz and R.B. Moore: Chem. Rev. Vol. 104 (2004), p.4535.

[2] O. Savadogo: J. New Mater. Electrochem. Syst. Vol. 1 (1998), p.47.

[3] J. Won, S.W. Choi, Y.S. Kang, H.Y. Ha, I.H. Oh, H.S. Kim, K.T. Kim and W.H. Jo: J. Membr. Sci. Vol. 214 (2003), p.245.

[4] M.A. Hickner, H. Ghassemi, Y.S. Kim, B.R. Einsla and J.E. McGrath: Chem. Rev. Vol. 104 (2004), p.4587.

[5] K.T. Adjemian, S.J. Lee, S. Srinivasan, J. Benziger and A.B. Bocarsly: J. Electrochem. Soc. Vol. 149 (2002), p.256.

[6] F. Wang, M. Hickner, Y.S. Kim, T.A. Zawodzinski and J.E. McGrath: J. Membr. Sci. Vol. 197(2002), p.231.

[7] M. Nogami, R. Nagao and Wong: J. Phy. Chem. Vol. 102 (1998), p.5772.

[8] D.S. Kim, D.B. Park, J.W. Rhim and Y.M. Lee: J. Membr. Sci. Vol. 240 (2004), p.37.

[9] Y.G. Jeong, H.S. Park, D.W. Seo, S.W. Choi, and W.G. Kim: Adv. Materials Research Vol. 26-28 (2007) p.835.

[10] H. Tong, Y. Hong, Y. Dong, M. Haussler, Z. Li, J.W.Y. Lam, Y. Dong, H.H.Y. Sung, I.D. Williams and B.Z. Tang. J. Phys. Chem. B. Vol. 111 (2007), p.11817.