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研究生:林亮吟
研究生(外文):Liang-Yin Lin
論文名稱:改質瀝青碳材應用於鋰電池負極材料之開發與性質研究
論文名稱(外文):Developments and characteristics studies of modified pitch for negative electrode of lithium ion batteries
指導教授:楊永欽楊永欽引用關係
指導教授(外文):Yung-Chin Yang
口試委員:洪逸明吳溪煌
口試委員(外文):I-Ming HungShe-huang Wu
口試日期:2012-06-13
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:材料科學與工程研究所
學門:工程學門
學類:材料工程學類
論文種類:學術論文
論文出版年:2012
畢業學年度:100
語文別:中文
論文頁數:78
中文關鍵詞:鋰離子電池煤焦油瀝青負極材料
外文關鍵詞:lithium ion batteriescoal tar pitchanode electrode materials
相關次數:
  • 被引用被引用:1
  • 點閱點閱:884
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  • 下載下載:87
  • 收藏至我的研究室書目清單書目收藏:0
鋰離子電池自發展以來,碳負極材料一直是研究重點之一。煤焦油瀝青含碳量高、價格便宜、來源取得容易。本實驗以煤焦油瀝青作為前驅物,經由適當的熱處理和不同的改質方法,合成碳材,改進碳材的性能。通過XRD、ICP、EA、Raman、SEM分析,來探討其材料的微結構和物理性質;並使用循環充放電測試、循環伏安法及交流阻抗來探討電池之電化學特性,且以其結果佐證碳材料之不同的改質對電化學特性之相互影響。
加入有機溶劑和矽粉的瀝青,其有機溶劑和瀝青的重量比為1:1時,在0.1C其第一次可逆電容量為225 mAh/g,6次循環後,可逆電容量為265mAh/g,且在1C、2C下仍優於純瀝青,分別有232 mAh/g、179 mAh/g。經由不同濃度HCl 洗處理,以6N HCl 酸洗處理,所得到之碳粉有較佳之電容量,其第一次可逆電容量為313 mAh/g,6次循環後,可逆電容量為308 mAh/g。


Carbonaceous anode materials are the focus of researchers for the development of lithium–ion batteries. The coal tar pitch has high carbon content. It is very cheap and easy to obtain. For improving the performance of carbon material, the coal tar pitch is used to synthesize carbon material, through the appropriate heat treatment and the different modifications. The microstructure and physical properties of the materials are investigated by XRD、ICP、EA、Raman、SEM analysis. The electrochemical characterization of batteries are measured by charge-discharge cyclic test、cyclic voltammogram and electrochemical impedance spectroscopy, and Corroborate the effect of the different modified carbon materials.
When pitch which is added Tetraethyl Orthosilicate and silicon powers , the first cycle of reversible capacity is 225 mAh/g, and the reversible capacity is 265 mAh/g after 6 cycles at chargr-discharg rate of 0.1 C . And it is better than pure pitch at charge-discharge rate of 1 C、2 C,which are 232 mAh/g、179 mAh/g. In study of pitch which is treated by different concentrations of HCl, the acid treatment of 6 N HCl has better electrical capacity. The first cycle of reversible capacity is 313 mAh/g, and the reversible capacity is 308 mAh/g after 6 cycles.


摘要 I
ABSTRACT II
致謝 IV
目錄 V
圖目錄 VIII
表目錄 XII
第一章 緒論 1
1.1 前言 1
1.2 研究動機與目的 3
第二章 理論基礎與文獻回顧 4
2.1 鋰離子電池的歷史與發展 4
2.2 鋰離子二次電池的組成與工作原理 7
2.2.1 負極材料 8
2.2.2 正極材料 9
2.2.3 電解質 9
2.2.4 隔離膜 10
2.3 鋰離子電極的負極材料 11
2.3.1 石墨化碳材 12
2.3.2 無序形碳材 13
2.4 煤焦油瀝青 16
2.5 碳材的碳化與石墨化 16
2.6 碳材的改質方法 18
2.6.1 表面氧化改性 18
2.6.2 包覆改性 20
2.6.3 摻雜改性 22
第三章 實驗方法與分析 24
3.1 實驗步驟 24
3.1.1 瀝青碳材之合成 24
3.1.2 極片製作及電池組裝流程 27
3.2材料鑑定分析及電化學性質測試 31
3.2.1 X光繞射分析 31
3.2.2 掃描式電子顯微鏡 31
3.2.3 元素分析 32
3.2.4 拉曼光譜 32
3.2.5 感應耦合電漿質譜儀 32
3.3.6 連續循環充放電測試 33
3.3.7 交流阻抗分析 33
3.3.8 循環伏安法分析 33
第四章 結果與討論 34
4.1 1000 OC燒結瀝青之碳粉鑑定分析與電池性能 34
4.1.1 鑑定分析 34
4.1.2 電化學分析 39
4.2 瀝青加入有機溶劑或矽粉之碳粉鑑定分析與電池性能46
4.2.1 鑑定分析 46
4.2.2 電化學分析 54
4.3 瀝青碳粉經不同濃度酸洗之鑑定分析與電池性能 63
4.3.1 鑑定分析 63
4.3.2 電化學分析 67
第五章 結論 73
參考文獻 75



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