Electrochemical and structural properties of a polymer electrolyte system based on the effect of CeO2 nanofiller with PVDF-co-HFP for energy storage devices

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• 作者：M. Johnsi ; S. Austin Suthanthiraraj
• 刊名：Ionics
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：22
• 期：7
• 页码：1075-1083
• 全文大小：1,102 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Electrochemistry
  Materials Science
  Physical Chemistry
  Condensed Matter
  Renewable Energy Sources
  Electrical Power Generation and Transmission
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1862-0760
• 卷排序：22

文摘

In the present work, a series of five different nanocomposite polymer electrolytes (NCPEs) have been reported with varying contents of ceria, CeO₂ nanofiller suitably incorporated within an optimized composition having 75:25 wt% ratio of poly(vinylidenefluoride-co-hexafluoropropylene) [(PVDF-co-HFP)] and zinc trifluoromethanesulfonate (ZnTf) in the form of films obtained by mean of solution casting technique with a general formula [75 wt% PVDF-co-HFP:25 wt% ZnTf]-x wt% CeO₂ where x = 1, 3, 5, 7, and 10, respectively. The chosen NCPE system is found to exhibit the maximum electrical conductivity of 3 × 10−4 S cm−1 for 5 wt% loading of CeO₂ nanofiller at ambient temperature. The observed conductivity enhancement has been attributed to the occurrence of an increase in the amorphous content as confirmed by X-ray diffraction (XRD) analysis. Detailed Fourier transform infrared (FTIR) spectral analysis has indicated the feasibility of complexation of the host polymer matrix with ZnTf salt and CeO₂ nanofiller. The incorporation of CeO₂ nanofiller has further increased the decomposition voltage of the polymer electrolyte from 2.4 to 2.7 V as revealed from the voltammetric studies performed on such NCPEs, thereby suggesting the suitability of these NCPE films with an enhanced electrical conductivity as new electrolytes in order to design and fabricate eco-friendly zinc rechargeable batteries and other electrochemical devices.KeywordsNanocomposite polymer electrolytesConductivityFTIRElectrochemical stabilityBatteries