臺灣博碩士論文加值系統

以自製的Li3V2(PO4)3作為正極材料及高分子聚合物為電解質所組成的鋰離子電池，實驗中改變高分子電解質的重量百分比製備五種樣品。由實驗數據顯示出有效電容量隨著高分子的重量百分比上升而增加。而高分子在低於20重量百分比時有效電容量平均值相差4%~5%。3.0 ~ 4.3 V工作電壓下1C的充放電速率其有效電容為110mAh/g；2C的充放電速率測試，初次的電容量為56mAh/g，而第20 ~ 100次的有效電容量平均有52mAh/g；5C的充放電速率測試，初次的電容量94mAh/g，而第10 ~ 100次的有效電容量平均有50mAh/g；庫倫效率則維持在100%，顯示磷酸鋰釩在充放電過程中結構穩定。

Li3V2(PO4)3 cathode materials have been synthesized via a sol-gel route combustion method. The lithium ion batteries in this study are composed of metallic lithium as anode and polymer gel electrolyte. In this study 5 samples were prepared by different polymer wt%. As the result of this study that showed effective electric capacity was positively correlated with polymer gel electrolyte. The difference of average effective electric capacity was 4% ~ 5% when polymer was lower than 20wt%. In the potential range of 3.0V ~ 4.3 V, discharge capacity of 110 mAh g-1 (1C rate). Initial discharge capacity of 56、94 mAh g-1 and stable discharge capacity of 52、50mAh g-1 at 2C , 5C after 100 cycles, but Coulomb efficiency kept in 100%. These data show that Li3V2(PO4)3 structure is stable during charging-discharging.

目錄
致謝 ……………………………………………………………………….i
摘要 …………………………………………………………………..…..ii
Abstract ……………………………………..……………………………iii
目錄 ……………………………………………..……………………….iv
圖表引索 …………………………………………………….…………..vi
第一章 緒論
1-1前言 ……………………………………..………………….…..1
1-2電池及原理介紹 ………………………..……………………...4
1-3鋰電池介紹 ………………..…………………………………...8
1-3-1 電解質介紹 …….……………………………………………9
1-3-2 鋰鹽介紹 …….……………………………………………..12
1-4正極材料 ………………………..…………………………….13
1-4-1 正極材料介紹 ….…………………………………………..13
1-4-2 磷酸鋰釩介紹 ….…………………………………………..14
1-5負極材料介紹 ……………………..………………………….16
1-6文獻歷史回顧 …………………………..…………………….17
1-7研究動機 ……………………………………..……………….22
第二章 研究方法
2-1 實驗步驟 ..……………………………………………………..23
2-1-1 Li3V2(PO4)3 ……..………………..………………………….23
2-1-2 製備正極材料Li3V2(PO4)3/C ……………..………………..24
2-1-3 製備正極極片 …...……………………..……………….….24
2-1-4 製備膠態高分子電解質 …..……..…………..…………….25
2-1-5 紐扣電池組裝 …..………………………………………….25
2-1-6 充放電實驗 …..……………………………..…..………….26
2-2 實驗使用藥品及儀器列表 ……………………………………26
2-3 充放電分析 ……………………………………………………27
第三章 結果與討論
3-1 液態電解質電池充放電表現 ………….……………………...29
3-2 膠態電解質電池充放電表現 …………………………………31
3-3 膠態電解質電池高速充放電表現 ……………………………42
第四章 結論 …………………………………………..……...………49
參考文獻 ………………………………………………..……………...50

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