【作者】 葛茜；

【导师】 史成武；

【作者基本信息】 合肥工业大学 ， 应用化学， 2009， 硕士

【摘要】 本文利用高压釜提高反应温度在无溶剂的条件下分别合成了1-甲基-3-丙基咪唑碘（MPII）、1-甲基-3-己基咪唑碘和1-甲基-3-乙基咪唑三氟乙酸盐（EMITA）,所得产率接近100%,实验表明,该方法是一种高效的合成方法。通过复分解法合成了1-甲基-3-丙基咪唑醋酸盐;分别将这四种离子液体制成电解质,利用超微电极循环伏安法研究I^-和I₃^-在电解质中的氧化还原行为,并测量染料敏化太阳电池（DSCs）的光伏性能,明确了I^-和I₃^-的质量传输控制过程对DSCs光伏性能(J_sc、V_oc、FF、η)的影响。以N-甲基咪唑、4-叔丁基吡啶、苯并咪唑、EMITA作为DSCs液体电解质（电解质组成:0.6mol/L MPII,0.1mol/L I₂,溶剂为3-甲氧基丙腈）的添加剂,使用超微电极通过循环伏安法及电化学阻抗谱研究了这四种添加剂对DSCs液体电解质中I^-和I₃^-的氧化还原行为,对Pt电极|电解质界面的影响,以及对染料敏化太阳电池DSCs光伏性能(J_sc、V_oc、FF、η)的影响。更多还原

【Abstract】 In this thesis,1-methyl-3-propylimidazoliumiodide（MPⅡ）, 3-hexyl-1-methylimidazolium iodide,3-ethyl-1-methylimidazolium trifluoroacetate （EMITA） were synthesized under solvent-free conditions by using Teflon-lined,stainless steel autoclaves respectively.It showed that the yield was close to 100%and the procedure was highly-efficient and eco-friendly.1-methyl-3-propylimidazolium acetate was synthesized by metathesis reaction.These four ionic liquids were applied in the electrolytes of dye sensitized solar cells respectively.The redox behavior ofⅠ₃^-/Ⅰ^- in the electrolyte were studied by means of cyclic voltammetry for ultramicroelectrodes.The apparent diffusion coefficients ofⅠ₃^- andⅠ^- in different electrolyte were calculated on the basis of the anodic and cathodic steady-state current.The photovoltaic performance of DSCs(J_sc,V_oc,FF,η) depending on the mass-transport control ofⅠ₃^- was elucidated.The influence of 1-methylimidazole,benzimidazole,4-tert-butylpyrdine and EMITA on apparent diffusion coefficients ofⅠ₃^- andⅠ^- in the electrolyte（Electrolyte component:0.6 mol/L MPⅡ,0.1 mol/LⅠ₂,solvent:3-methoxypropionitrile） and the Pt counter electrode|electrolyte interface were investigated by ultramicroelectrode and electrochemical impedance spectroscopy.The photovoltaic performances of dye sensitized solar cells were compared with these addictives.EMITA increased the open voltage and fill factor while reduced the resistance of electrolytes in DSCs.更多还原