Effect of the alkyl chain length of the ionic liquid anion on polymer electrolytes properties

Rita Leones, Franciani Sentanin, Sílvia Cristina Nunes, José M S S Esperança, Maria Cristina Gonçalves, Agnieska Pawlicka, Verónica De Zea Bermudez, Maria Manuela Silva

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

New polymer electrolytes (PEs) based on chitosan and three ionic liquid (IL) families ([C2mim][CnSO3], [C2mim][CnSO4] and [C2mim][diCnPO4]) were synthesized by the solvent casting method. The effect of the length of the alkyl chain of the IL anion on the thermal, morphological and electrochemical properties of the PEs was studied. The solid polymer electrolytes SPE membranes were analyzed by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), polarized optical microscopy (POM), atomic force microscopy (AFM), complex impedance spectroscopy (ionic conductivity) and cyclic voltammetry (CV). The obtained results evidenced an influence of the alkyl chain length of the IL anion on the temperature of degradation, birefringence, surface roughness and ionic conductivity of the membranes. The DSC, XRD and CV results showed independency from the length of the IL-anion-alkyl chain. The PEs displayed an predominantly amorphous morphology, a minimum temperature of degradation of 135°C, a room temperature (T = 25°C) ionic conductivity of 7.78 × 10-4 S cm-1 and a wide electrochemical window of ∼ 4.0 V.

Original languageEnglish
Pages (from-to)171-178
Number of pages8
JournalElectrochimica Acta
Volume184
DOIs
Publication statusPublished - 1 Dec 2015

Fingerprint

Ionic Liquids
Chain length
Ionic liquids
Electrolytes
Anions
Polymers
Negative ions
Ionic conductivity
Cyclic voltammetry
Differential scanning calorimetry
Membranes
X ray diffraction
Degradation
Chitosan
Birefringence
Electrochemical properties
Temperature
Optical microscopy
Thermogravimetric analysis
Atomic force microscopy

Keywords

  • Alkyl-chain length
  • Chitosan
  • Ionic liquid
  • Polymer electrolyte

Cite this

Leones, Rita ; Sentanin, Franciani ; Nunes, Sílvia Cristina ; Esperança, José M S S ; Gonçalves, Maria Cristina ; Pawlicka, Agnieska ; Bermudez, Verónica De Zea ; Silva, Maria Manuela. / Effect of the alkyl chain length of the ionic liquid anion on polymer electrolytes properties. In: Electrochimica Acta. 2015 ; Vol. 184. pp. 171-178.
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abstract = "New polymer electrolytes (PEs) based on chitosan and three ionic liquid (IL) families ([C2mim][CnSO3], [C2mim][CnSO4] and [C2mim][diCnPO4]) were synthesized by the solvent casting method. The effect of the length of the alkyl chain of the IL anion on the thermal, morphological and electrochemical properties of the PEs was studied. The solid polymer electrolytes SPE membranes were analyzed by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), polarized optical microscopy (POM), atomic force microscopy (AFM), complex impedance spectroscopy (ionic conductivity) and cyclic voltammetry (CV). The obtained results evidenced an influence of the alkyl chain length of the IL anion on the temperature of degradation, birefringence, surface roughness and ionic conductivity of the membranes. The DSC, XRD and CV results showed independency from the length of the IL-anion-alkyl chain. The PEs displayed an predominantly amorphous morphology, a minimum temperature of degradation of 135°C, a room temperature (T = 25°C) ionic conductivity of 7.78 × 10-4 S cm-1 and a wide electrochemical window of ∼ 4.0 V.",
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Leones, R, Sentanin, F, Nunes, SC, Esperança, JMSS, Gonçalves, MC, Pawlicka, A, Bermudez, VDZ & Silva, MM 2015, 'Effect of the alkyl chain length of the ionic liquid anion on polymer electrolytes properties', Electrochimica Acta, vol. 184, pp. 171-178. https://doi.org/10.1016/j.electacta.2015.09.163

Effect of the alkyl chain length of the ionic liquid anion on polymer electrolytes properties. / Leones, Rita; Sentanin, Franciani; Nunes, Sílvia Cristina; Esperança, José M S S; Gonçalves, Maria Cristina; Pawlicka, Agnieska; Bermudez, Verónica De Zea; Silva, Maria Manuela.

In: Electrochimica Acta, Vol. 184, 01.12.2015, p. 171-178.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of the alkyl chain length of the ionic liquid anion on polymer electrolytes properties

AU - Leones, Rita

AU - Sentanin, Franciani

AU - Nunes, Sílvia Cristina

AU - Esperança, José M S S

AU - Gonçalves, Maria Cristina

AU - Pawlicka, Agnieska

AU - Bermudez, Verónica De Zea

AU - Silva, Maria Manuela

PY - 2015/12/1

Y1 - 2015/12/1

N2 - New polymer electrolytes (PEs) based on chitosan and three ionic liquid (IL) families ([C2mim][CnSO3], [C2mim][CnSO4] and [C2mim][diCnPO4]) were synthesized by the solvent casting method. The effect of the length of the alkyl chain of the IL anion on the thermal, morphological and electrochemical properties of the PEs was studied. The solid polymer electrolytes SPE membranes were analyzed by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), polarized optical microscopy (POM), atomic force microscopy (AFM), complex impedance spectroscopy (ionic conductivity) and cyclic voltammetry (CV). The obtained results evidenced an influence of the alkyl chain length of the IL anion on the temperature of degradation, birefringence, surface roughness and ionic conductivity of the membranes. The DSC, XRD and CV results showed independency from the length of the IL-anion-alkyl chain. The PEs displayed an predominantly amorphous morphology, a minimum temperature of degradation of 135°C, a room temperature (T = 25°C) ionic conductivity of 7.78 × 10-4 S cm-1 and a wide electrochemical window of ∼ 4.0 V.

AB - New polymer electrolytes (PEs) based on chitosan and three ionic liquid (IL) families ([C2mim][CnSO3], [C2mim][CnSO4] and [C2mim][diCnPO4]) were synthesized by the solvent casting method. The effect of the length of the alkyl chain of the IL anion on the thermal, morphological and electrochemical properties of the PEs was studied. The solid polymer electrolytes SPE membranes were analyzed by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), polarized optical microscopy (POM), atomic force microscopy (AFM), complex impedance spectroscopy (ionic conductivity) and cyclic voltammetry (CV). The obtained results evidenced an influence of the alkyl chain length of the IL anion on the temperature of degradation, birefringence, surface roughness and ionic conductivity of the membranes. The DSC, XRD and CV results showed independency from the length of the IL-anion-alkyl chain. The PEs displayed an predominantly amorphous morphology, a minimum temperature of degradation of 135°C, a room temperature (T = 25°C) ionic conductivity of 7.78 × 10-4 S cm-1 and a wide electrochemical window of ∼ 4.0 V.

KW - Alkyl-chain length

KW - Chitosan

KW - Ionic liquid

KW - Polymer electrolyte

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DO - 10.1016/j.electacta.2015.09.163

M3 - Article

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JO - Electrochimica Acta

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