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Full-Text Articles in Physical Sciences and Mathematics
Conductivity And Structural Studies Of Plasticized Polyacrylonitrile (Pan) - Lithium Triflate Polymer Electrolyte Films, Zurina Osman
Conductivity And Structural Studies Of Plasticized Polyacrylonitrile (Pan) - Lithium Triflate Polymer Electrolyte Films, Zurina Osman
Zurina Osman
The effect of different plasticizers on the properties of PAN-LiCF(3)SO(3) polymer electrolytes has been studied. Propylene carbonate (Pc) and ethylene carbonate (EC) having different values of donor numbers, dielectric constant and viscosity have been used as plasticizers. The highest room temperature conductivity for the film in the PAN-LiCF(3)SO(3) system was 3.04 x 10(-4) s cm(-1). The highest room temperature conductivity for the films in the PAN-EC-LiCF(3)SO(3) system and the PAN-PC-LiCF(3)SO(3) system was 1.32 x 10(-3) and 8.64 x 10(-4) S cm(-1). The addition of plasticizers has been found to enhance the conductivity of polymer electrolytes by increasing the amorphous content …
Comparative Studies On Plasticized And Unplasticized Polyacrylonitrile (Pan) Polymer Electrolytes Containing Lithium And Sodium Salts, Zurina Osman
Zurina Osman
Polymer electrolytes based on polyacrylonitrile (PAN) containing inorganic salts; lithium inflate (LiCF(3)SO(3)) and sodium triflate (NaCF(3)SO(3)) and ethylene carbonate (EC) as plasticizer were prepared using solvent casting technique. In this study, five systems of plasticized and unplasticized polymer electrolyte films i.e. PAN-EC, PAN-LiCF(3)SO(3), PAN-NaCF(3)SO(3) PAN-EC-LiCF(3)SO(3) and PAN-EC-NaCF(3)SO(3) systems have been prepared. The structural and morphological properties of the films were studied using infrared spectroscopy and scanning electron microscopy (SEM) while the conductivity study was done by using impedance spectroscopy. The infrared results revealed that interaction had taken place between the nitrogen atoms of PAN and Li(+) and Na(+) ions from …
Development And Characterization Of Poly-Epsilon-Caprolactone-Based Polymer Electrolyte For Lithium Rechargeable Battery, Zurina Osman
Development And Characterization Of Poly-Epsilon-Caprolactone-Based Polymer Electrolyte For Lithium Rechargeable Battery, Zurina Osman
Zurina Osman
A biodegradable polymer electrolyte based on Poly-epsilon-caprolactone (PCL) with various level of concentrations of Lithium salt and plasticizer have been synthesized under both the ambient and vacuum environments. The ionic conductivity, morphology, topology and structural properties are examined using EIS, SEM and XRD respectively. Conductivity as high as 3.48E-(04) Scm(-1) and 4.99E(-04) Scm(-1) are obtained for the ambient and vacuum environment respectively. Ionic mobility is improved by increasing the amorphousity content of the polymer and degree of salt dissociation with plasticizer. Ionic conductivity is further enhanced with the addition Li salt to increase the free ions concentration. Ionic conductivity measurements …