Synthesis and proton conductivity of anhydrous dendritic electrolytes

• Authors: Mehmet Şenel , Metin Tülü , Ayhan Bozkurt
• Languages of publication: EN

Abstracts

EN

Water soluble PEG cored dendritic hexa-acid which comprises peripheral carboxylic acidic groups were prepared via nucleophilic substitution reactions. Novel anhydrous proton conducting electrolytes were prepared by incorporation of the heterocyclic protogenic solvent imidazole (Im) into PEG cored dendritic hexa acid, (PEG-HA), at several molar ratios of Im to-COOH units of PEG-HA. The complexation of PEG-HA and Im was illustrated by infrared spectroscopy (FT-IR). The materials are thermally stable up to 150 °C as evidenced by thermogravimetry analysis (TGA). Differential scanning calorimetry (DSC) results verified that the organic electrolytes are homogeneous and amorphous. The proton conductivities were characterized by means of AC impedance spectroscopy and a maximum conductivity of 1 × 10−3 S/cm was measured at 120 °C in the anhydrous state. [...]

Keywords

EN

Dendritic electrolyte; imidazole; proton conductivity; thermal properties

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2007
• Volume: 5
• Issue: 2
• Pages: 546-556

Dates

published

1 - 6 - 2007

online

27 - 2 - 2007

Contributors

author

Mehmet Şenel

• Department of Chemistry, Fatih University, 34500, Buyukcekmece, Istanbul, Turkey

author

Metin Tülü

• Department of Chemistry, Fatih University, 34500, Buyukcekmece, Istanbul, Turkey

author

Ayhan Bozkurt

• Department of Chemistry, Fatih University, 34500, Buyukcekmece, Istanbul, Turkey

References

• [1] Y.G. Wang and X.G. Zhang: “All solid-state supercapacitor with phosphotungstic acid as the proton-conducting electrolyte”, Solid State Ionics, Vol. 166, (2004), pp. 61–67. http://dx.doi.org/10.1016/j.ssi.2003.11.001[Crossref]
• [2] A. Bozkurt: “Application of Proton Conducting Polymer Electrolytes to Electrochromic Devices”, Turk. J. Chem., Vol. 26, (2002), pp. 663–668.
• [3] P. Jannasch: “Recent developments in high-temperature proton conducting polymer electrolyte membranes”, Curr. Opin. Colloid In., Vol. 8, (2003), pp. 96–102. http://dx.doi.org/10.1016/S1359-0294(03)00006-2[Crossref]
• [4] A. Bozkurt and W.H. Meyer: “Proton conducting blends of poly(4-vinylimidazole) with phosphoric acid”, Solid State Ionics, Vol. 138, (2001), pp. 259–265. http://dx.doi.org/10.1016/S0167-2738(00)00779-7[Crossref]
• [5] M.F.H. Schuster and W.H. Meyer: “Anhydrous proton conducting polymers”, Annu. Rev. Mater. Res., Vol. 33, (2003), pp. 233–261. http://dx.doi.org/10.1146/annurev.matsci.33.022702.155349[Crossref]
• [6] M. Yamada and I. Honma: “Alginic acid-imidazole composite material as anhydrous proton conducting membrane”, Polymer, Vol. 45, (2004), pp. 8349–8354. http://dx.doi.org/10.1016/j.polymer.2004.10.017[Crossref]
• [7] A. Bozkurt, W.H. Meyer and G. Wegner: “PAA/imidazol-based proton conducting polymer electrolytes”, J. Power Sources, Vol. 123, (2003), pp. 126–131. http://dx.doi.org/10.1016/S0378-7753(03)00560-3[Crossref]
• [8] A. Bozkurt: “Anhydrous Proton Conductive Polystyrene Sulfonic Acid Membranes”, Turk J. Chem., Vol. 29, (2005), pp. 117–123.
• [9] P. Donoso, W. Gorecki, C. Berthier, F. Defendini, C. Poinsignon and M.B. Armand: “NMR, conductivity and neutron scattering investigation of ionic dynamics in the anhydrous polymer protonic conductor PEO(H3PO4)x)”, Solid State Ionics, Vol. 28/30, (1988), pp. 969–974. http://dx.doi.org/10.1016/0167-2738(88)90313-X[Crossref]
• [10] W.H. Meyer: “Polymer Electrolytes for Lithium-Ion Batteries”, Adv. Mater., Vol. 10, (1998), pp. 439–448. http://dx.doi.org/10.1002/(SICI)1521-4095(199804)10:6<439::AID-ADMA439>3.0.CO;2-I[Crossref]
• [11] M.F.H. Schuster, W.H. Meyer, G. Wegner, H.G. Herz, M. Ise, M. Schuster, K.D. Kreuer and J. Maier: “Proton mobility in oligomer-bound proton solvents: imidazole immobilization via flexible spacers”, Solid State Ionics, Vol. 145, (2001), pp. 85–92. http://dx.doi.org/10.1016/S0167-2738(01)00917-1[Crossref]
• [12] G.R. Newkome, R.K. Behera, C.N. Moorefield and G.R. Baker: “Cascade polymers: Synthesis and characterisation of four-directional spherical dendritic macromolecules based on adamantane”, J. Org. Chem., Vol. 57, (1992), pp. 358–362. http://dx.doi.org/10.1021/jo00027a061[Crossref]
• [13] J.J. Przyluski, W. Wieczorec and S. Glowinkowski: “Novel Proton Polymer Ionic Conductors”, Electrochim. Acta, Vol. 37, (1992), pp. 1733–1745. http://dx.doi.org/10.1016/0013-4686(92)80149-G[Crossref]
• [14] G.R. Newkome, C.N. Moorefield, G.R. Baker, R.K. Behara, G.H. Escamilia and M.J. Saunders: “Supramolecular self-assemblies of two-directional cascade molecules: automorphogenesis”, Angew. Chem., Vol 31, (1992), pp. 917–919. http://dx.doi.org/10.1002/anie.199209171[Crossref]
• [15] H. Namazi and M. Adeli: “Novel linear-globular thermoreversible hydrogel ABA type copolymers from dendritic citric acid as the A blocks and poly(ethyleneglycol) as the B block”, Eur. Polym. J., Vol. 39, (2003), pp. 1491–1500. http://dx.doi.org/10.1016/S0014-3057(02)00385-3[Crossref]
• [16] M. Tülü and K.E. Geckeler: “Synthesis and properties of hydrophilic polymers. Part 7. Preparation, characterization and metal complexation of carboxy-functional polyesters based on poly(ethylene glycol)”, Polymer Int., Vol. 48, (1999), pp. 909–914. http://dx.doi.org/10.1002/(SICI)1097-0126(199909)48:9<909::AID-PI244>3.0.CO;2-E[Crossref]
• [17] A. Bozkurt and T. Pakula: “Dielectric and dynamic mechanical relaxations in polymer-heterocycle hybrid materials”, Chem. Phys. Lett., Vol. 422, (2006) pp. 496–499. http://dx.doi.org/10.1016/j.cplett.2006.02.078[Crossref]
• [18] W. Münch, K.D. Kreuer, W. Silvestri, J. Maier and G. Seifert: “The diffusion mechanism of an excess proton in imidazole molecule chains: first results of an ab initio molecular dynamics study” Solid State Ionics, Vol. 145, (2001), pp. 437–443. http://dx.doi.org/10.1016/S0167-2738(01)00941-9[Crossref]
• [19] C. Yang, P. Costamagna, S. Srinivasan, J. Benziger and A.B. Bocarsly: “Approaches and technical challenges to high temperature operation of proton exchange membrane fuel cells”, J. Power Sources, Vol. 103, (2001), pp. 1–9. http://dx.doi.org/10.1016/S0378-7753(01)00812-6[Crossref]
• [20] F. Sevil and A. Bozkurt: “Proton conducting polymer electrolytes on the basis of poly(vinylphosphonic acid) and imidazole”, J. Phys. Chem. Solids, Vol. 65, (2004), pp. 1659–1662. http://dx.doi.org/10.1016/j.jpcs.2004.04.001[Crossref]
• [21] A. Bozkurt and T. Pakula: “Dielectric and dynamic mechanical relaxations in polymer-heterocycle hybrid materials”, Chem. Phys. Lett., Vol. 422, (2006), pp. 496–499. http://dx.doi.org/10.1016/j.cplett.2006.02.078[Crossref]
• [22] M. Yamada and I. Honma: “Proton conducting acid-base mixed materials under water-free condition”, Electrochim. Acta, Vol. 48, (2003), pp. 2411–2415. http://dx.doi.org/10.1016/S0013-4686(03)00263-9[Crossref]
• [23] K.D. Kreuer, A. Fuchs, M. Ise, M. Spaeth and J. Maier: “Imidazole and pyrazole-based proton conducting polymers and liquids”, Electrochim. Acta, Vol. 43, (1998), pp. 1281–1288. http://dx.doi.org/10.1016/S0013-4686(97)10031-7[Crossref]
• [24] M. Morita, J.L. Qiao, N. Yoshimoto and M. Ishikawa: “Application of proton conducting polymeric electrolytes to electrochemical capacitors”, Electrochim. Acta, Vol. 50, (2004), pp. 837–841. http://dx.doi.org/10.1016/j.electacta.2004.02.053[Crossref]

Identifiers

DOI

10.2478/s11532-007-0016-x