期刊
ELECTROCHIMICA ACTA
卷 215, 期 -, 页码 1-11出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.08.087
关键词
Solid polymer electrolyte; Composite solid polymer electrolyte; Ionic conductivity; Lithium ion conduction; Ceramic filler
资金
- Indian Institute of Technology Kanpur
Solid polymer electrolytes (SPEs) have wide-scale applications in the fields of energy storage (capacitors and batteries), power conversion (fuel cells), electrochemical sensing etc. In the present work, poly (vinylidene fluoride-co-hexafluoropropene) (PVDF-HFP) based SPEs with varying concentration of lithium triflate and composite solid polymer electrolytes (CSPEs) composed of BaTiO3 in addition to the optimised loading of lithium triflate in PVDF-HFP matrix are synthesized by solution casting technique. SPE with 10 wt.% lithium triflate shows highest DC conductivity of 2.19 x 10(-6)S cm(-1) at 300 K, which enhances to 8.89 x 10(-6) Scm(-1) by adding 4 wt.% of BaTiO3. X-Ray diffraction (XRD) and scanning electron microscopy (SEM) analysis shows that the reduction in crystallite size of the polymeric matrix assists in enhancing the conductivity. Hence, the crystallite size, by altering the arrangement of the non-conducting polymeric chains, affects the ionic conductivity of the composites significantly. (C) 2016 Elsevier Ltd. All rights reserved.
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