FTIR Spectroscopic and DC Ionic conductivity Studies of PVDF-HFP: LiBF4: EC Plasticized Polymer Electrolyte Membrane

International Conference on Materials, Alloys and Experimental Mechanics 2017

材料科学;金属学;机械制造

Sangeetha, M.^1 ; Mallikarjun, A.^1 ; Jaipal Reddy, M.^2 ; Siva Kumar, J.^3

Department of Physics, JNTUH, Kukatpally, Telangana State, Hyderabad, India^1

Department of Physics, Palamuru University, Mahbubnagar, Telangana State, India^2

Department of Physics, Osmania University, Telangana State Hyderabad, India^3

关键词: DC ionic conductivity;    Gel polymer electrolytes;    Ionic charge carriers;    Plasticized polymer electrolytes;    Plasticized polymers;    Solution-casting method;    Temperature dependent;    Vogel-Tammann-Fulcher equation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/225/1/012049/pdf
DOI  :  10.1088/1757-899X/225/1/012049

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In the present paper; the FTIR and Temperature dependent DC Ionic conductivity studies of polymer (80 Wt% PVDF-HFP) with inorganic lithium tetra fluoroborate salt (20 Wt% LiBF4) as ionic charge carrier and plasticized with various weight ratios of Ethylene carbonate plasticizer (10 Wt% to 70 Wt% EC) as gel polymer electrolytes. Solution casting method is used for the preparation of plasticized polymer-salt electrolyte films. FTIR analysis shows the good complexation between PVDF-HFP: LiBF4and the presence of functional groups in the plasticized polymer-salt electrolyte membrane. Also the analysis and results show that the highest DC ionic conductivity of 1.66 × 10-3SCm-1was found at 373 K for a particular concentration of 80 Wt% PVDF-HFP: 20 Wt% LiBF4: 40 Wt% EC porous gel type polymer-salt plasticized porous membrane. Increase of temperature results expansion and segmental motion of polymer chain that generates free volume in turn promotes hopping of the lithium ions satisfying Vogel-Tammann-Fulcher equation.