本論文主要研究將多孔性碳材料應用於鋰硫電池中並且研究其電化學特性，首先將不同重量比例的Polyacrylonitrile ( PAN ) 與Polymethylmathacrylate ( PMMA ) 混和再利用靜電紡絲法製成奈米纖維，之後再鍛燒形成多孔性碳纖維，並且利用掃描式電子顯微鏡 ( SEM ) 以及穿透式電子顯微鏡 ( TEM ) 觀察纖維表面的孔洞結構，比表面積及孔洞分析儀 ( BET ) 分析纖維的孔洞數據，之後將多孔性碳纖維與硫形成硫-碳複合材料，再利用X光繞射儀 ( XRD ) 分析前後訊號變化，確認硫是否裝載於多孔性碳纖維中，之後進行電化學測試，我們發現了多孔性碳纖維能有效的降低電池的內阻，且在0.1 C的放電條件下具有越高比表面積的多孔性碳纖維具有越大的電容量，我們也將由國立台北科技大學材料科學與工程研究所李嘉甄教授實驗室提供的多孔性碳球製成硫-碳複合材料並進行電化學測試，在0.1 C的放電條件下其電容量可達958 mAh/g。

We applied porous carbon materials to lithium–sulfur batteries and measured electrochemical properties in this thesis. First of all, we mixed polyacrylonitrile ( PAN ) and polymethylmathacrylate ( PMMA ) in different weight ratio then made nanofibers by electrospinning and formed porous carbon fiber by carbonization. The structure of porous carbon nanofibers were shown by scanning electron microscope ( SEM ) and transmission electron microscope ( TEM ), and the surface properties were analyzed by Brunauer Emmet Teller ( BET ) techniques. After that synthesized sulfur-porous carbon composite materials and defineded by X-ray diffraction ( XRD ). In electrochemical measurements show that the porous carbon materials can reduce the battery impedance effectively. When the specific surface area of porous carbon fiber increase, we can get better capacity at 0.1 C-rate. We also analyzed the electrochemical measurements of porous carbon sphere which from National Taipei University of Technology Prof. Chia-Chen Li. The results show the discharge capacity is 958 mAh/g at 0.1 C-rate.

論文審定書 i
論文公開授權書 ii
謝誌 iii
摘要 iv
Abstract v
目錄 vi
圖目錄 ix
表目錄 xii
第一章 緒論 1
第二章 文獻回顧 3
2-1 鋰離子電池 4
2-1.1 研究歷史 4
2-1.2 工作原理 4
2-1.3 鋰離子電池正極材料比較 6
2-2 鋰硫電池 7
2-2.1 硫 ( Sulfur ) 7
2-2.2 工作原理 8
2-2.3 Shuttle phenomenon 9
2-2.4 正極材料 10
2-3 靜電紡絲 13
2-3.1 研究歷史 13
2-3.2 工作原理 14
2-3.3 實驗參數 16
2-3.4 高分子的碳化 19
2-4 研究動機 20
第三章 實驗方法 21
3-1 實驗藥品材料以及器材 22
3-2 樣品分析儀器 24
3-2.1 電化學分析儀 24
3-2.2 高解析掃描式電子顯微鏡 ( High-resolution Analytical Scanning Electron Microscope, SEM ) 27
3-2.3 比表面積及孔洞分析儀 ( Brunauer-Emmett-Teller ( BET ) Surface Area Analysis ) 29
3-2.4 解析型穿透式電子顯微鏡 ( Analytical Transmission Electron Microscope, TEM ) 30
3-2.5 Ｘ光繞射儀 ( X-Ray Diffraction, XRD ) 31
3-3 實驗步驟 32
3-3.1 硫-多孔性碳纖維複合材料 32
3-3.2 硫-多孔性碳球複合材料 34
第四章 結果討論 36
4-1 多孔性碳材之結構分析 37
4-1.1 多孔性碳纖維 37
4-1.2 多孔性碳球 42
4-2 硫-碳複合材料分析 45
4-2.1 硫-多孔性碳纖維複合材料 45
4-2.2 硫-多孔性碳球複合材料 46
4-3 電化學分析 47
4-3.1 循環伏安法 47
4-3.2 充放電曲線比較 48
4-3.3 交流阻抗比較 51
4-3.4 不同放電速率比較 52
4-3.5 循環壽命比較 54
4-4 充放電前後電池結構檢測 56
第五章 總結 58
第六章 參考文獻 60
第七章 附錄 64
7-1 多孔性碳球應用於超級電容 65
7-1.1 簡介 65
7-1.2 實驗步驟 65
7-1.3 結果討論 67

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