本文選題：染料敏化太陽能電池 + 離子液體��； 參考：《蘇州大學》2014年博士論文

【摘要】：目前I/I3是染料敏化太陽能電池(DSSCs)中應用最廣泛的氧化還原電對，但I/I3體系存在對金屬導線有強的腐蝕性、具有較低的氧化還原電勢，及對光的競爭性吸收等缺點。這些缺點限制了DSSC光電轉換效率的提高及其應用。針對以上問題，本論文主要研究了功能性離子液體添加劑和非碘氧化還原對的設計與合成，以及它們在DSSCs中的應用；探索了利用界面改性提高固態(tài)電解質與光陽極的界面相容性，提高固態(tài)電解質DSSCs的光電轉換效率。具體研究內(nèi)容主要包括以下幾個方面： (1)設計合成了吡啶功能化的離子液體添加劑，，用以取代傳統(tǒng)的有機溶劑添加劑，并考查了不同濃度的添加劑對電池性能的影響。光電流-電壓曲線表明這種新型添加劑在低濃度下能實現(xiàn)高的電池效率，甚至高于常用的具有揮發(fā)性的有機溶劑添加劑，并顯示較好的穩(wěn)定性。這類新型的離子液體添加劑能克服揮發(fā)性的有機溶劑添加劑的缺點。 (2)設計合成了具有離子液體功能的鈷（III/II）配體氧化還原電對，循環(huán)伏安表明這種新的鈷電對具有較高的氧化還原電位，并且這種新的鈷（III/II）配體電對在離子液體體系里具有高的溶解性，在離子液體電解質體系中，光強100mW/cm2的測試條件下，電池的效率可達7.37%。 (3)通過利用表面活性劑修飾TiO2光陽極，制備具有較高光電轉換效率的塑性晶體固態(tài)電池。光電流-電壓曲線，接觸角，固態(tài)紫外吸收等測試結果表明AerosolOT（AOT）作為表面活性劑修飾光陽極能使電解質與吸附染料的光陽極表面得到更好的接觸，減少了TiO2導帶與電解質中的I3的電子復合作用，從而使電池的效率得到很大的提高。這種用表面活性劑修飾TiO2光陽極的方法為全固態(tài)DSSC效率的提高提供了一種新的思路。
[Abstract]:At present, I / I _ 3 is the most widely used redox pair in dye sensitized solar cells (DSSCs), but I / I _ 3 system has some disadvantages such as strong corrosion to metal wires, low redox potential and competitive absorption of light. These shortcomings limit the efficiency of DSSC photoelectric conversion and its application. In order to solve the above problems, the design and synthesis of functional ionic liquid additives and non-iodine redox pairs and their applications in DSSCs were studied in this paper. The interface compatibility between solid electrolyte and photoanode was improved by interfacial modification, and the photoelectric conversion efficiency of DSSCs was improved. The specific research contents include the following aspects: (1) the functional ionic liquid additives of pyridine were designed and synthesized to replace the traditional organic solvent additives. The effect of different concentration of additives on the performance of the battery was investigated. The photocurrent-voltage curves show that the new additive can achieve high battery efficiency at low concentration, even higher than the volatile organic solvent additives, and show good stability. This new ionic liquid additive can overcome the disadvantages of volatile organic solvent additives. (2) the ligands of cobalt (III / II) with ionic liquid function have been designed and synthesized. Cyclic voltammetry shows that the new cobalt pair has high redox potential, and the new cobalt (III / II) ligand pair has high solubility in ionic liquid system. In ionic liquid electrolyte system, the light intensity is 100 MW / cm ~ 2. The efficiency of the battery can reach 7.37. (3) by modifying TiO2 photoanode with surface active agent, the plastic crystal solid state battery with high photoelectric conversion efficiency is prepared. The results of photocurrent-voltage curve, contact angle and solid-state ultraviolet absorption showed that AerosolOT (AOT) as a surfactant modified photoanode could better contact the electrolyte with the photoanode surface of dye adsorption. The electron recombination of TIO _ 2 conductance band and I _ 3 in electrolyte is reduced, and the efficiency of the battery is greatly improved. The method of modifying TiO2 photoanode with surfactants provides a new way to improve the efficiency of all solid DSSC.
【學位授予單位】：蘇州大學
【學位級別】：博士
【學位授予年份】：2014
【分類號】：TM914.4;O646

【參考文獻】

相關期刊論文 前1條

1 史成武;葛茜;李兵;桃李;劉清安;;添加劑對染料敏化太陽電池電解質性能的影響[J];物理化學學報;2008年12期

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