極細二氧化錫奈米棒陣列於鋰離子電池及溼度感測器上的應用

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研究生：	林庭輝 Lin, Ting-Hui
論文名稱：	極細二氧化錫奈米棒陣列於鋰離子電池及溼度感測器上的應用 Applications of Ultrathin Tin Oxide Nanorod Arrays in Lithium Ion Battery and Humidity Sensor
指導教授：	李紫原 Lee, Chi-Young
口試委員:	裘性天 Chiu, Hsin-Tien 陳金銘 Chen, Jin-Ming
學位類別：	碩士 Master
系所名稱：	工學院 - 材料科學工程學系 Materials Science and Engineering
論文出版年：	2012
畢業學年度：	100
語文別：	中文
論文頁數：	66
中文關鍵詞：	二氧化錫、奈米棒、鋰離子電池、濕度感測器
相關次數：	點閱：3 下載：0
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本研究以 SnCl4 做為前驅物，利用簡易的水熱法在銅箔以及氧化鋁基板上合成出寬約 40-50 nm、長約 400-500 nm 的二氧化錫奈米棒陣列，並進一步的發現若在反應水溶液中添加食鹽，可使得到的二氧化錫奈米棒長度及寬度分別縮至 5-15 nm 以及 300-400 nm。
由於具有良好的一維形貌，本研究接著將合成出的極細二氧化錫棒奈米陣列應用於鋰離子電池的陽極及溼度感測器上。於鋰離子電池的表現結果中，可以發現經過1C (781 mA g-1) 100 cycle 連續充放電後的測試後，其電容量優於其他對照組 (221 mA h g-1)，並於5C (3905 mA g-1) 的高充放電速率中依然有穩定高電容量表現(216 mA h g-1)。而在溼度感測器的表現上，此極細奈米棒陣列在相對溼度 30-90 的環境中，其電阻值的對數值對相對濕度擁有相當良好的線性關係(相關係數 R2 = 0.989)，並有著相當高的靈敏度，當在此範圍內升高1 %的相對濕度，其電阻值變化可達 13.2 %，表示在此相對濕度範圍中可精準量測到環境中的相對濕度值。這些結果顯示，不論在鋰離子電池或是相對溼度的感測上，極細二氧化錫奈米棒陣列都有著相當優異的成果。

目錄
摘要    I
Abstract    II
誌謝    III
目錄    V
圖目錄    VIII
表目錄    XI
第一章     緒論    1
1.1     前言     1
     1.2 實驗動機     3
第二章     文獻回顧     4 
2.1 鋰離子電池介紹     4
  2.1.1 鋰離子電池的發展         4
         2.1.2 鋰離子電池陰極材料的現況發展     4
         2.1.3 鋰離子電池的陽極材料選擇     5
         2.1.4 二氧化錫於鋰離子電池的陽極應用     6
         2.1.5 二氧化錫與鋰的合金反應機制     6
     2.2 氣體感測器介紹     10
         2.2.1 吸附理論     10
         2.2.2 二氧化錫氣體感測器工作原理     11
     2.3 溼度感測器介紹     14
         2.3.1 溼度感測器的選擇     14
         2.3.2 溼度感測器種類介紹     14
         2.3.3 陶瓷型溼度感測器感測機制     16
         2.3.4 二氧化錫作為溼度感測器的性質     17
第三章 實驗方法及步驟     22
     3.1 實驗流程圖     22
     3.2 二氧化錫奈米棒之合成     22
         3.2.1 實驗原料     22
         3.2.2 基板前處理     23
         3.2.3 二氧化錫奈米棒之合成     23
         3.2.4 極細二氧化錫奈米棒之合成     24
         3.2.5 二氧化錫奈米棒陣列之合成     24
     3.3 樣品測試與分析     26
         3.3.1 X光繞射分析儀     26
         3.3.2 場發射掃描式電子顯微鏡     26
         3.3.3 X射線能量散佈分析儀     26
         3.3.4 穿透式電子顯微鏡     27
     3.4 鋰離子電池製備及特性量測     27
         3.4.1 電極之製備     27
         3.4.2 樣品重量之測量     28
         3.4.3 Coin cell type電池之組裝     28
         3.4.4 鋰離子電池特性量測     28
     3.5 溼度感測器的製備及量測     30
         3.5.1 溼度感測器樣品製備     30
         3.5.2 溼度特性量測     30
第四章 結果與討論     32
    4.1 表面形貌與結構鑑定     32
         4.1.1 二氧化錫奈米棒反應溫度與時間之探討     32
         4.1.2 水熱反應添加鹽類之探討     33
         4.1.3 二氧化錫奈米棒陣列之分析     34
     4.2 應用於鋰離子電池效能測試     40
         4.2.1 定電流充放電測試     40
         4.2.2 變電流充放電測試     41
         4.2.3 循環伏安測試     42
     4.3 應用於溼度感測器之效能測試     52
         4.3.1 感濕特性量測     52
         4.3.2 遲滯現象與應答時間測定     53
         4.3.3 試片精準度測定     54
第五章 結論     58
參考文獻     61

                                

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