In-situ study of the influence of crystallization on the ionic conductivity of polymer electrolytes

• Autorzy: Marzantowicz M. , Dygas J.R. , Krok F. , Zygadło-Monikowska E. , Florjańczyk Z.
• Konferencja: IX National Conference on Fast Ion Conductors , Wrocław-Borowice , 9-12 December 2004
• Języki publikacji: EN

Abstrakty

EN

Simultaneous impedance measurements and optical observations of polymer electrolytes were conducted in an automated experimental setup, combining an impedance analyser, polarizing microscope with a heating stage and a digital camera. The polymer film was placed between glasses with indium tin oxide conductive layers, forming a transparent cell mounted in a custom-designed holder, which preserved an argon atmosphere. Results of in-situ studies for various compositions of poly(ethylene oxide) (PEO) with LiN(CF3SO2)2 salt (LiTFSI), as well as pure PEO, are presented. In the investigated systems, crystallization had a strong impact on ionic conductivity. It was found that the initial growth of crystalline structures caused only a small fraction of the total decrease of conductivity. A large decrease in conductivity was observed during the second stage of crystallization, when no significant changes in microscope picture were observed. In pure PEO and the PEO:LiTFSI 6:1 system, a dense crystalline structure developed, resulting in a decrease in conductivity of over two orders of magnitude. In dilute PEO:LiTFSI systems, a "loose" structure was formed, with amorphous areas preserved between crystallites, and conductivity decreased by only a factor of about 6.

Słowa kluczowe

EN

poly(ethylene oxide); LiTFSI; polymer electrolyte; conductivity; crystallization; PEO

PL

elektrolit polimerowy; przewodnictwo; krystalizacja; przewodnictwo jonowe; poli(tlenek etylenu)

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2006
• Tom: Vol. 24, No. 1
• Strony: 195--203
• Opis fizyczny: Bibliogr. 15 poz.

Twórcy

autor

Marzantowicz M.

autor

Dygas J.R.

autor

Krok F.

autor

Zygadło-Monikowska E.

autor

Florjańczyk Z.

• Faculty of Physics, Warsaw University of Technology, ul. Koszykowa 75, 00-662 Warsaw,

Bibliografia

• [1] BERTHIER C., GORECKI W., MINIER M., ARMAND M.B., CHABAGNO J.M., RIGAUD P., Solid State Ionics, 11 (1983), 91.
• [2] GRAY F.M., Polymer Electrolytes, Chapt. 2, Royal Society of Chemistry, Cambridge, UK (1997).
• [3] LASCAUD S., PERRIER M., VALLÉE A., BESNER S., PRUD’HOMME J., ARMAND M., Macromolecules, 27 (1994), 7469.
• [4] LABRECHE C., LEVESQUE I., PRUD’HOMME J., Macromolecules, 29 (1996), 7795.
• [5] EDMAN L., FERRY A., DOEFF M.M., J. Mater. Res., 15 (2000), 1950.
• [6] MACGLASHAN G.S., ANDREEV Y.G., BRUCE P.G., Nature, 398 (1999), 792.
• [7] GOLODNITSKY D., LIVSHITS E., RESENBERG YU., LAPIDES I., PELED E., Solid State Ionics, 147 (2002), 265.
• [8] GOLODNITSKY D., LIVSHITS E., KOVARSKY R., PELED E., Proc. 9th Int. Symp. Polymer Electrolytes, Mrągowo, Poland, August 2004.
• [9] DYGAS J.R., MISZTAL-FARAJ B., FLORJAŃCZYK Z., KROK F., MARZANTOWICZ M., ZYGADŁO-MONIKOWSKA E., Solid State Ionics, 157 (2003), 249.
• [10] MARZANTOWICZ M., DYGAS J.R., KROK F., MOLENDA A., ZYGADŁO-MONIKOWSKA E., FLORJAŃCZYK Z., Mol. Phys. Rep., 35 (2002), 65.
• [11] MARZANTOWICZ M., DYGAS J.R., JENNINGER W., ALIG I., Solid State Ionics 176 (2005), 2115.
• [12] MARZANTOWICZ M., DYGAS J.R., KROK F., ŁASIŃSKA A., FLORJAŃCZYK Z., ZYGADŁO-MONIKOWSKA E., Electrochim. Acta, 51 (2006), 1713.
• [13] MARZANTOWICZ M., DYGAS J.R., KROK F., ŁASIŃSKA A., FLORJAŃCZYK Z., ZYGADŁO-MONIKOWSKA E., AFFEK A., Electrochim. Acta, 50 (2005), 3969.
• [14] DYGAS J.R., KUREK P., BREITER M.W., Electrochim. Acta, 40 (1995), 1545.
• [15] DYGAS J.R., BREITER M.W., Electrochim. Acta, 44 (1999), 4163.