New solid ionic conductor based on poly(ethylene oxide) and sodium trifluoroacetate

Castillo, José; Delgado, I.; Chacón, M.; Vargas, R.A.

doi:10.1016/s0013-4686(00)00772-6

Cited by 14 publications

(15 citation statements)

References 4 publications

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“…The decrease in the crystallinity of pure PEO, is evidenced in the decrease of the intensity of the peaks at 19.3° and 23.6° [8]. The results obtained for PEO 10 CF 3 COONa are consistent with DSC results reported by J. Castillo et al [21].…”

Section: Ray Diffractionsupporting

confidence: 91%

“…The changes of conductivity previously reported in systems such as PEO/CF 3 COOLi [20] and PEO/CF 3 COONa [21], have motived us to the study of the composite formed by PEO/CF 3 COONa added with Al 2 O 3 as filler, with the goal of increasing the conductivity in this system and knowing more about the interaction polymer-salt, polymerfiller and electrolyte-filler. In this paper, we studied the (PEO) 10 CF 3 COONa + x wt.% Al 2 O 3 system by XRD, Raman, and IR to obtain information about changes in crystallinity due to interactions between the components of system.…”

Section: Introductionmentioning

confidence: 99%

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Structural and vibrational studies on composites polymer electrolytes (PEO)10CF3COONa + x wt.% Al2O3

Delgado-Rosero

Jurado-Meneses

Meléndez‐Lira

2017

Rev. Fac. Ing. Univ. Antioquia

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ABSTRACT:Composites formed by combinations of polyethylene oxide (PEO) and sodium trifluoroacetate (CF 3 COONa) with different aluminum oxide (Al 2 O 3 ) concentrations were synthetized. Infrared (IR), Raman spectroscopy, X ray diffraction (XRD) and atomic force microscopy (AFM) analyses, were performed to characterize the composites. Changes on the XRD intensity peaks, and variations in intensity and position of some peaks in Raman and IR spectroscopy were observed for different concentrations of added Al 2 O 3 . The decrease in the XRD peaks of the PEO when it is combined with the salt, revealed that crystallinity in polymer was reduced, being lower when the alumina is added. The increase in roughness root medium square (R RMS ) observed by AFM when Al 2 O 3 was added, agree with reduction in crystallinity observed with XRD studies. Changes in the structure of PEO showed in the absorption lines IR and Raman, due to addition of CF 3 COONa salt and Al 2 O 3 filler, have been attributed to the interactions between the electrolyte and the filler. RESUMEN:Se sintetizaron compósitos formados entre polióxido de etileno (PEO) y trifluoroacetato de sodio (PEO 10 CF 3 COONa) con diferentes concentraciones de óxido de aluminio (Al 2 O 3 ). Los compósitos fueron caracterizados por espectroscopía infrarroja (IR), espectroscopía Raman, difracción de rayos X (XRD) y microscopía de fuerza atómica (AFM). Las combinaciones del electrolito sólido PEO 10 CF 3 COONa con diferentes concentraciones de Al 2 O 3 , mostraron cambios en la intensidad de los picos de XRD, así como cambios en la intensidad y posición de algunos picos de IR y Raman. El decrecimiento de los picos del PEO en XRD, cuando este fue combinado con la sal, reveló que la cristalinidad del polímero se redujo, siendo más baja cuando se le adicionó alúmina. Se observó un incremento en la raíz cuadrática media de la rugosidad (R RMS ) obtenida por microscopia de fuerza atómica cuando se adicionó Al 2 O 3. Este incremento está en concordancia con la reducción de la cristalinidad observada con estudios de XRD. Los cambios en la estructura del PEO mostrados en las líneas de absorción de IR y Raman, debidos a la adición de CF 3 COONa y Al 2 O 3 , fueron atribuidos a interacciones entre el electrolito y el relleno Al 2 O 3 .

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Section: Ray Diffractionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Structural and vibrational studies on composites polymer electrolytes (PEO)10CF3COONa + x wt.% Al2O3

Delgado-Rosero

Jurado-Meneses

Meléndez‐Lira

2017

Rev. Fac. Ing. Univ. Antioquia

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“…La síntesis y caracterización del composito PEO: CF3COONa:Al2O3 son novedosas porque no se encuentran reportes en la literatura; además se incrementa la conductividad en un orden de magnitud, con respecto al electrolito PEO: CF3COONa (Castillo et al 2001). …”

Section: Discussionunclassified

“…El proceso térmicamente activado, observado en gráficos de conductividad versus el inverso de la temperatura (Figura 3) obedece a un aumento de la flexibilidad en las cadenas del polímero, es característica de sistemas poliméricos conductores iónicos (Castillo et al 2001, Karaoglua et al 2011. Con la particularidad de que este composito presenta dos regiones con un comportamiento tipo Arrhenius, entre las cuales existe una región intermedia la cual muestra un comportamiento anómalo entre temperaturas para las que se presentan cambios de fase en el sistema (fusión de PEO y fusión de PEO:CF3COONa; Castillo et al 2001, Johan et al 2011, Ramanjaneyulu et al 2012).…”

Section: Discussionunclassified

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Conductividad iónica en nuevos compositos (PEO)10(CF3COONa)-X % Al2O3

Meneses

Delgado²,

Vargas³

2013

Univ. Sci.

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ionic conductivity of (PEO) 10 (CF 3 COONa)-X % Al 2 O 3 composites AbstractTo increase the ionic conductivity of solid polymer electrolyte, (PEO)10CF3COONa, we formed new composites by adding alumina particles as a filler. We prepared these composites by dissolving them in a liquid solvent, and characterized them through impedance spectroscopy (IS), using a Pt/electrolyte/Pt electrode configuration. The combination of polyethylene oxide (PEO) with sodium trifluoroacetate (CF3COONa) produced a reduction in resistance of up to two orders of magnitude in Nyquist plots, and up to three orders of magnitude when we added Al2O3 particles at room temperature. DC conductivity concentration graphs show an increase in the ionic conductivity with low alumina concentrations. The new synthesized ionic conductor composite presented conductivity values of 2.00x10 -5 Scm -1 at room temperature and of 7.70x10 -4 Scm -1 at a temperature of 383 K. Two sections of the conductivity diagrams also evidenced a temperature induced Arrhenius behavior, indicating a thermally activated process. Higher concentrations of Al2O3 induced a Vogel-Tamman-Fulcher (VTF) behavior. Conductivity variations produced by Al2O3 concentration are linked to the number of sites involved in ion transport between Al2O3 ionic electrolyte species through Lewis acid-base interactions.

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Sodium Trifluoroacetate

Prakash

Mathew

2010

Encyclopedia of Reagents for Organic Synthesis

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New solid ionic conductor based on poly(ethylene oxide) and sodium trifluoroacetate

Cited by 14 publications

References 4 publications

Structural and vibrational studies on composites polymer electrolytes (PEO)10CF3COONa + x wt.% Al2O3

Structural and vibrational studies on composites polymer electrolytes (PEO)10CF3COONa + x wt.% Al2O3

Conductividad iónica en nuevos compositos (PEO)10(CF3COONa)-X % Al2O3

Sodium Trifluoroacetate

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