臺灣博碩士論文加值系統

本 實 驗 利 用 自 製 的 磷 酸 釩 鋰 (Li3V2(PO4)3) 正 極 材 料 與 參 雜 α-Al2O3 奈米顆粒的高分子膠態電解質作成電池。由於充放電實驗發現有添加α-Al2O3膠態電解質電池的電容量都比沒有添加α-Al2O3膠態電解質電池高。以充放電速率 1C 和 5C 電池的電容量分別是理論電容量值的 83%和 42%。藉由交流阻抗方面得知有添加α-Al2O3電解質的電荷轉移和擴散的電阻變大。不論是充放電速率 1C 和 5C，經過了循環 100 次後，庫倫效率都維持 100%，表示磷酸鋰釩在充放電過程中結構穩定。

The gel-typed electrolyte batteries, using Li3V2(PO4)3 as cathode and lithium metal as anode, were prepared. The specific capacity of the battery is improved by doping α-Al2O3 particles in polymer gel electrolyte. However, the specific capacities are only 83% and 42% of the theoretical value, when 1 C and 5 C charging-discharging rates are used,
respectively. After charging-discharging 100 times using 1 C or 5C charging rate, the coulomb efficiencies are still 100%. This indicates the structural stable of Li3V2(PO4)3 during charging-discharging process.

致謝……………………………………………………………………け

摘要……………………………………………………………………げ

Abstract………………………………………………………………...こ

目錄………………………………………………………………….....ご

圖表索引……………………………………………………………….ざ

第一章 緒論
1-1 前言……………………………………………………………1
1-2 鋰電池的工作原理……………………………………………2
1-3 正極材料介紹………………………………………………....3
1-4 磷酸鋰釩(Li3V2(PO4)3)簡介............................5
1-5 負極材料介紹………………………………………………....9
1-6 電解質分類及介紹…………………………………………..10
1-7 電解質中的鋰鹽介紹………………………………………..13
1-8 電解質中有機溶劑介紹……………………………………..13
1-9 研究方向.........................15

第二章 實驗方式
2-1 實驗用藥品與儀器列表………………………………………16
2-2 實驗步驟……………………………………………………...17
2-3 量測儀器原理簡介……………………………………………21
2-3-1 交流阻抗分析儀…………………………………………21
2-2-2 鋰離子電池等效電路模型………………………………29
2-3-3 X-ray 粉末繞射儀(X-ray Diffractometer，XRD)……..31

第三章 結果與討論
3-1 磷酸鋰釩的 XRD 圖分析…………………………………...32
3-2 膠態電解質電池的充放電測試…………………………....33
3-2-1 電池充放電 1C 的結果……………………………….34
3-2-2 電池充放電 5C 的結果………………………………..40
3-3 膠態電解質電池交流阻抗圖與等效電路模擬分析……....46

第四章 結論………………………………………………………...55

參考文獻……………………………………………………………...56

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