Phase diagram of polymer electrolyte: (x)(PEO) – ( 1-x)CF3COOLi
DOI:
https://doi.org/10.17533/udea.redin.12469Keywords:
poly(ethylene oxide), ionic conductivity, polymer electrolytesAbstract
Solid polymer electrolytes based on poly(ethylene oxide) (PEO) and lithium trifluoroacetate (CF3COOLi) were prepared by a solvent casting method by different concentrations of salt. The membranes resulting of slow evaporation were analyzed by differential scanning calorimetry (DSC) and its phase diagram was drawing for a second thermal scan. The DSC curves on the first thermal cycle show three anomalies at 303, 338 and 393 K, that are slightly shifted with the salt content. For high concentrations, the intensity of the endothermic peak associated with the melting point of PEO (338 K) decreases, that one for the third transition increases with the salt content, the second peak (melting point of PEO) disappear when the concentration reaches the value of X = 0,405 (given in fraction of mass: salt/(salt + polymer)). These results and the change of conductivity demonstrate the formation of a new complex between the PEO and the CF3COOLi.
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V. Di Noto, S. Lavina, G. Giffin, E. Negro, B. Scrosati. “Polymer Electrolytes: Present, past and future”. Electrochimica Acta. Vol. 57. 2011. pp. 4-13.
M. Nadherna, F. Opekar, J. Reiter, K. Stulik. “A planar, solid-state amperometric sensor for nitrogen dioxide, employing an ionic liquid electrolyte contained in a polymeric matrix”. Sensors and Actuators B: Chemical. Vol. 161. 2012. pp. 811 - 817.
A. Dey, S. Karan, A. Dey, S. De. “Structure, morphology and ionic conductivity of solid polymer electrolyte”. Materials Research Bulletin. Vol. 46. 2011. pp. 2009-2015.
S. Jin Pai, Y. Chan Bae, Y. Kook Sun. “Ionic conductivities of solid polymer electrolyte/salt systems for lithium secondary battery”. Polymer. Vol. 46. 2005. pp. 3111-3118.
Hamide Aydın, Mehmet S, enel, Hamit Erdemi, Abdulhadi Baykal, Metin Tulu, Ali Ata, Ayhan Bozkurt. “Inorganic–organic polymer electrolytes based on poly(vinyl alcohol) and borane/poly(ethylene glycol) monomethyl ether for Li-ion batteries”. Journal of Power Sources. Vol. 196. 2011. pp. 1425- 1432.
J. Ah Seo, J. H. Koh, D. Kyu Roh, J. Hak Kim. “Preparation and characterization of crosslinked proton conducting membranes based on chitosan and PSSA-MA copolymer”. Solid State Ionics. Vol. 180. 2009. pp. 998-1002.
Y. Andreev, P. Bruce. “Polymer electrolyte structure and its implications”. Electrochimica Acta. Vol. 45. 2000. pp. 1417-1423.
Q. Zhang. Investigating Polymer Conformation in Poly (Ethylene Oxide) (PEO) Based Systems for Pharmaceutical Applications. Master of Science Thesis. Department of Applied Physics. Chalmers University of Technology. Göteborg, Sweden. 2011. pp. 4-11.
A. Vallée, S. Besner, J. Prud’homme. “Comparative study of poly(ethylene oxide) electrolytes made with LiN(CF3 SO2 ) 2 , LiCF3 SO3 and LiClO4 : Thermal properties and conductivity behaviour”. Electrochimica Acta. Vol. 37. 1992. pp. 1579-1583.
J. Dygas, B. Misztal-Faraj, Z. Florjanczyk, F. Krok, M. Marzantowicz, E. Zygadło-Monikowska. “Effects of inhomogeneity on ionic conductivity and relaxations in PEO and PEO–salt complexes”. Solid State Ionics. Vol. 157. 2003. pp. 249-256.
J. Castillo, I. Delgado, M. Chacón, R. Vargas. “New solid ionic conductor based on poly(ethylene oxide) and sodium trifluoroacetate”. Electrochimica Acta. Vol. 46. 2001. pp. 1695-1697.
T. Hatakeyma, H. Kasuga, M. Tanaka, H. Hatakeyama. “Cold crystallization of poly(ethylene glycol)–water systems”. Thermochimical Acta. Vol. 465. 2007. pp. 59-66.
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