An investigation of composite electrolytes by mixing polyethylene oxide- and polytetramethylene glycol-based waterborne polyurethane with the addition of LiClO4/propylene carbonate

Ten Chin Wen, Jian Sheng Chang, Tsung Tien Cheng

研究成果: Article同行評審

15 引文 斯高帕斯(Scopus)

摘要

Various composite electrolytes (CE) were prepared by mixing polytetramethylene glycol-based waterborne Polyurethane [WPU(PTMG)], polyethylene oxide (PEO), and LiClO4/propylene carbonate (PC). The conductivity of these CEs was investigated using ac impedance. Differential scanning calorimetry (DSC) and polarizing microscopy (PM) were employed for material characterization. The temperature dependence of the conductivity follows the Arrhenius law for samples with a LiClO4/PC content larger than 30%, while for samples with LiClO4/PC content approximating 8%, it shows linear segments separated by a transition zone between 25 and 65°C. According to the ac and DSC results, the conductivity is increased, and the melting temperature is decreased by increasing the LiClO4/PC content. PM results indicate that the increase in PEO ratio increases the crystallinity of the PEO-WPU(PTMG) films. When LaClO4/PC is added, the increase in PEO ratio results in an increase in conductivity. The CE comprising 33% PEO, 17% WPU(PTMG), and 50% LiCO4/PC exhibits conductivities as high as ca. ∼10-2 S cm-1 at 85°C and 5 × 10-2 S cm-1 at 15°C.

原文English
頁(從 - 到)3450-3455
頁數6
期刊Journal of the Electrochemical Society
145
發行號10
DOIs
出版狀態Published - 1998 10月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 可再生能源、永續發展與環境
  • 表面、塗料和薄膜
  • 電化學
  • 材料化學

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