Structural, thermal and electrical properties of PVA-LiCF<sub>3</sub>SO<sub>3</sub> polymer electrolyte期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Structural, thermal and electrical properties of PVA-LiCF₃SO₃ polymer electrolyte

Authors:	J Malathi M Kumaravadivel M Hema S Selvasekarapandian

Institution:	^a Department of Physics, Kalasalingam University, Anand Nagar, Krishnankoil-626190, Virudhunagar District, India ^b Solid State and Radiation Physics Lab, Department of Physics, Bharathiar University, Coimbatore-641 046, India ^c Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aobaku, Sendai, 980-8577, Japan

Abstract:	The development of polymeric systems with high ionic conductivity is one of the main objectives in Li rechargeable battery. In the present study, the different composition of PVA-LiCF₃SO₃ polymer electrolyte has been prepared by solution cast technique using DMSO as solvent. The FTIR study confirms the polymer-salt complex formation. The amorphous nature of the polymer has been confirmed by XRD analysis. DSC measurements show decrease in T_g with increasing salt concentration. The temperature dependent conductivity obeys Arrhenius relationship. The maximum conductivity has been observed in the order of 7 × 10^− 4 S cm^− 1 for 25 mol% of LiCF₃SO₃. The activation energy has been found to be 0.16 eV. The two peaks have been observed in the dielectric loss spectrum which shows two types of relaxation α and β.

Keywords:	Polymer electrolyte P294 Ionic conductivity I250 Dielectric properties D180
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