A Star-Branched Organic-Inorganic Hybrid Electrolyte with Remarkable Swelling Properties Based on PPG-PEG-PPG Diamine
碩士 === 國立中央大學 === 化學研究所 === 97 === 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...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2009
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| Online Access: | http://ndltd.ncl.edu.tw/handle/90619129488861197311 |
| Summary: | 碩士 === 國立中央大學 === 化學研究所 === 97 === 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.
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