English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 62797/95867 (66%)
造訪人次 : 3731176      線上人數 : 640
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/52299


    題名: 含奈米二氧化矽膠態電解質製備用於染料敏化太陽能電池之研究
    其他題名: The study of gel-state electrolyte containing SiO2 nanoparticles for the preparation to the dye sensitized solar cells
    作者: 鍾岱麟;Chung, Tai-lin
    貢獻者: 淡江大學化學工程與材料工程學系碩士班
    張正良
    關鍵詞: 染敏太陽能電池;膠態電解質;二氧化矽;聚氧化乙烯;Dye-sensitized solar cells;Electrolyte;SiO2 nanoparticle;polyethylene oxide
    日期: 2010
    上傳時間: 2010-09-23 17:31:56 (UTC+8)
    摘要: 近年來,對染料敏化太陽能電池之電解質的研究焦點集中在利用高分子聚合物或無機奈米粒子,以摻混的方式來改善液態電解質易揮發、外漏和封裝的缺陷,使提高長期使用上的穩定性。本研究中,分成兩種不同膠態電解質系統,一為將具有半結晶性的高分子聚氧化乙烯單獨加入液態電解質的系統中,形成膠態電解質,觀察高分子聚氧化乙烯對電解質的流變、導電度、離子擴散係數和光電轉換效率的影響;二為將高分子聚氧化乙烯與二氧化矽奈米粒子,以摻混的方式加入液態電解質的系統中,觀察二氧化矽奈米粒子對電解質的導電度、離子擴散係數和光電轉換效率的影響,並探討不同粒徑大小的二氧化矽奈米粒子所造成的影響。
    研究結果發現在高分子聚氧化乙烯電解質系統中,隨著高分子的含量增加其黏度隨之增高,而導電度、離子擴散係數和光電轉換效率則是隨之降低,其原因為黏度的提高會影響電解質離子的移動性。而在高分子聚氧化乙烯電解質系統中摻混二氧化矽奈米粒子,依據導電性質、離子擴散係數和光電轉換效率分析結果可以發現,在含量為2 wt%二氧化矽奈米粒子可獲得最高之導電度、離子擴散系數和光電轉換效率,當含量增加至3 wt%以上時,導電度和離子擴散係數皆有降低的趨勢,其原因為二氧化矽奈米粒子添加過量產生聚集而沉澱,阻礙離子的移動。比較不同粒徑二氧化矽奈米粒子,結果發現皆能提高光電轉換效率,且效率差異不大,其原因為不同粒徑的二氧化矽奈米粒子在甲氧基丙腈溶劑中皆會聚集成較大顆的粒子。
    In recent years, research of electrolyte in dye-sensitized solar cell focuses on blending polymers or inorganic nanoparticles in to overcome the problems of volatility, leakage and packaging, and pursue higher long-term stability. In this study, polyethylene oxide (PEO) and silica (SiO2) were incorporated in liquid electrolyte to form gel electrolyte, the resulting conductivity and ion diffusion coefficient of the electrolyte and the conversion efficiency of the assembled cell were observed, and the effect of particle size of silica nanoparticles on the performance was studied.
    The results showed that the viscosity of PEO electrolyte system increased with increasing polymer content, while the conductivity, ion diffusion coefficient and the conversion efficiency decreased by reason of the viscosity increasing would affect the ion mobility. In the hybrid PEO and SiO2 electrolyte system, the best performance in conductivity, ion diffusion coefficient and the conversion efficiency could be obtained when 2 wt% of silica nanoparticles was added. When the silica content increased to more than 3 wt%, both the conductivity and diffusion coefficient were reduced. The reason for the reduction could be that the excessive silica nanoparticles aggregated and obstructed ion movement. Comparison of the results of silica nanoparticles with different sizes was made. Although the efficiencies were enhanced in both cases, no significant difference could be found which could be attributed to the aggregation of silica nanoparticles with different sizes in 3-methoxypropionitrile (MPN) solvent to form larger particles with similar sizes.
    顯示於類別:[化學工程與材料工程學系暨研究所] 學位論文

    文件中的檔案:

    檔案 大小格式瀏覽次數
    index.html0KbHTML330檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋