查詢結果分析
相關文獻
- 小分子塑化PEO高分子電解質之製備與特性分析
- Composition Optimization and Characteristics of PEO-LiCF[feb0]SO[feb0]-Tetraglyme and PEO-LiCF[feb0]SO[feb0]-Tetraglycol Polymer Electrolytes
- 鹼性固態聚氧化乙烯電解質
- 奈米親油化黏土對膠態聚偏二氟乙烯電解質相關性質所造成之影響
- 高分子電解質在鋰二次電池上之應用研究現況
- 鋰高分子二次電池技術
- 鋰離子電池市場展望及未來發展趨勢
- 臺灣養豬飼料中電解質平衡之調查
- Influences of Adding LiCF[feb0]SO[feb0]-PC on the Conductivity of H[feba]MDI Based WPU Electrolytes
- Characterization of Metal-Oxide-Semiconductor Field Effect Transistor for Polypyrrole Prepared by Electrochemical Synthesis
頁籤選單縮合
題名 | 小分子塑化PEO高分子電解質之製備與特性分析=Preparation and Characterization of Plasticized PEO Polymer Electrolytes |
---|---|
作者 | 吳昌謀; 周大新; Wu, Chang-mou; Chow, Tahsin J.; |
期刊 | 化學 |
出版日期 | 20010600 |
卷期 | 59:2 2001.06[民90.06] |
頁次 | 頁143-153 |
分類號 | 341.37 |
語文 | chi |
關鍵詞 | 電解質; 小分子摻合; 離子導電度; Plasticized PEO polymer electrolytes; Ionic conductivity; |
中文摘要 | 本文採用小分子摻合法,降低PEO高分子電解質的結晶性,以提高其導電度並保持 良好的界面穩定度與尺寸安定性。結果顯示,以 4-tert-butylcatechol 摻合約可降低 PEO 之結晶度至 30 %為最有效,其次為 catechol 之 50 %。測量此系列電解質室溫下之阻抗 ,可求得其導電度,結果亦顯示以 4-tert- butylcatechol 摻合可提昇 PEO 之離子導電度 約五倍,約為 2 × 10 �笐� S/cm。 調整其與 PEO 之莫耳數比,可見在低濃度時其離子導 電度隨摻合量增加而增加,而摻合比達到重量莫耳濃度 1.11 m 時即不再改變。以本實驗室 合成之醚類高分子 2 來作摻合實驗,結果顯示摻合濃度僅為 0.33 m 時, 離子導電度即已 高達 1.1 × 10 �笐� S/cm, 當摻合此高分子之單體 1 於 PEO 中時,摻合濃度為 1.67 m 時離子導電度亦高達 2.1 × 10 �笐� S/cm,皆優於 4-tert-butylcatechol。 在介面穩定 度方面,多次反覆量測摻合電解質薄膜之阻抗可得 Nyquist 圖譜,發現含有 -OH 官能基或 醚基類之小分子摻合入 PEO 中,於通入電流後易滲出電解質表面, 並導致其界面的相對穩 定性降低。 以 4-ter-butylcatechol 摻合之電解質雖可維持離子導電度不變,但是其系統 界面阻抗卻隨量測次數而逐漸增加。 同樣的情形亦發生在單體化合物 1 摻合之系統,證明 此兩摻合電解質系統皆相當不穩定。 但以具醚基分子鏈高分子 2 來摻合時,電解質系統的 化學穩定性卻相當良好,此現象應與摻合體之擴散速率有關。這些結果顯示此聚醚基高分子 2 應具備作為鋰電池優良電解質材料之深厚潛力。 |
英文摘要 | A series of selected molecules were blended into polyethylene oxide (PEO) to be used as solid electrolyte in secondary lithium batteries. It was found that 4-ter-butylcatechol was the most effective for reduction of crystalinity as well as for enhancement of ionic conductivity, however, it was not very stable upon repeated impedance measurements due to leakage at interfaces. Polymer 2 containing hydroquinone with triglyme pendants was prepared from 1 by ring-opening metathesis polymerization process. The PEO material blended with about 2% of 2 showed a significant improvement on conductivity compared with pure PEO. This new material was also showed higher stability than other blended molecules on repeated a.c. impedance measuremetns. A comparison on crystalinity, ionic conductivity, and relative stability for all blended PEO materials is discussed. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。