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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/6489

    Title: 具有星狀有機無機固 (膠) 態高分子電解質之結構鑑定及電化學特性研究;A Star-Branched Organic-Inorganic Hybrid Electrolyte with Remarkable Swelling Properties Based on PPG-PEG-PPG Diamine
    Authors: 廖俊杰;Chun-Chieh Liao
    Contributors: 化學研究所
    Keywords: 膨潤比;鋰電池;高分子電解質;solid polymer electrolyte;Li;swelling ratio;gel polymer electrolyte
    Date: 2009-07-01
    Issue Date: 2009-09-22 10:20:24 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 此篇論文第一部分主要是利用 Jeffamine-ED serial 與三聚氯氰反應形成具有星狀結構之高分子,進一步藉由添加3-Glycidyloxypropyl trimethoxysilane (GLYMO) 使其固化,並進一步將其固態高分子電解質吸附電解液製備成膠態高分子電解質。藉由固態核磁共振 (Solid State NMR)、交流阻抗分析儀 (AC-Impedance)、及 線性掃描伏安法 (LSV)、循環伏安法 (CV)、進行分析探討,發現膠態高分子電解質具有高膨潤比、高導電度,以及電化學穩定,最後組裝成硬幣型 2032 電池並與市售使用聚丙烯 (PP) 隔離膜之電池進行充放電循環壽命比較,發現在充放電範圍 2.75 ~ 4.4 V,充放電速率 0.2 C,膠態高分子電解質之電池具有比市售 PP 隔離膜電池高出一倍之循環壽命。 另外,第二部分則是在高分子電解質中添加 PVdF-HFP 以增加其高分子電解質機械強度,並藉由微差掃描卡計 (DSC) 、紅外吸收光譜儀 (FTIR) 、交流阻抗分析儀、拉力機以及固態核磁共振光譜等儀器對具有星狀結構之固態高分子電解質加以分析研究。亦吸附電解液進行膠態高分子電解質導電度測試。發現適當添加 PVdF-HFP 可增加高分子電解質之導電度,且可提升高分子電解質之機械強度。 We have synthesized a new star-branched organic-inorganic hybrid electrolyte based on the use of cyanuric chloride as the central core to couple with triblock copolymers PPG-PEG-PPG diamine (ED2000), followed by cross-linking with epoxy alkoxysilanes via a sol-gel process. The star-branched hybrid material has soaked in an electrolyte solution of 1 M LiClO4 in EC/PC (1:1, w/w). The present star-branched hybrid material exhibits a large electrolyte uptake capacity that increases the ionic conductivity value up to 1.11 × 10-2 Scm-1 at 30 °C. The film has also possessed electrochemical stability up to 6.0 V versus Li/Li+. The star-branched hybrid electrolyte has a remarkable two-fold increase in cyclabilty during overcharge at 4.4 V as compared to polypropylene (PP) separator sample. PVdF-HFP is also added in hybrid electrolyte, not only to enhance the mechanical strength but also keep the conductivity at the same level.
    Appears in Collections:[化學研究所] 博碩士論文

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