Proton conduction in PVPA-benzimidazole hybrid electrolytes

ISSN: 1300-0527
Yayın Aralığı: Yılda 6 Sayı
Yayıncı: TÜBİTAK

Proton conducting properties of benzimidazole (BnIm) doped poly(vinylphosphonic acid) (PVPA) were studied. The doping ratio, x, which is the number of moles of BnIm per mole of polymer repeat unit, varied from 0.5 to 2. The samples were characterized by FT-IR spectroscopy, thermogravimetric analysis (TG), differential scanning calorimetry (DSC) and impedance spectroscopy. The IR study indicates the protonation of heterocyclic units from the "free nitrogen" side. The proton conductivity and thermal stability of the blends increase with x. Maximum conductivity of PVPA x BnIm blends is approximately $10^{-3}$ S/cm at 150 °C.

PDF

___

1.W. Münch, K.D. Kreuer, W. Silvestri, J. Maier and G. Seifert, Solid State Ionics 145, 437 (2001).
2.A. Bozkurt, W.H. Meyer and G. Wegner, J. Power Sources 123, 126-131 (2003).
3.H. Erdemi, A. Bozkurt and W.H. Meyer, Synth. Met. 143, 133-138 (2004).
4.F. Sevil and A. Bozkurt, J. Phys. Chem. Solids 65(10), 1659-1662 (2004).
5.J.S. Wainright, J.T. Wang, D. Weng, R.F. Savinell and M. Litt, J. Electrochem. Soc. 142, 121 (1995).
6.Q. Li, H.A. Hjuler and N.J. Bjerrum, J. Appl. Electrochem. 26, 773 (2001).
7.A. Schechter and R.F. Savinell, Solid State Ionics 147, (2002)181.
8.R. Bouchhet and E. Siebert, Solid State Ionics, 118, 287 (1999).
9.M. Yamada and I. Honma, Electrochim. Acta 48,-2411 (2003).
10.D.D. Jiang, Q. Yao, M.A. McKinney and C.A. Wilkie, Polym. Degrad. Stabil. 63, 423-434 (1999).
11.K.D. Kreuer, A. Fuchs, M. ise, M. Spaeth and J. Maier, Electrochim. Acta 43, 1281 (1998).
12.M.F.H. Schuster and W.H. Meyer, Annu. Rev. Mater. Res. 33, 233 (2003).