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Preparation and Characterization of Imidazolium Ionic Liquid Polymer for Quasi-solid Electrolyte

Author: JinZuo
Tutor: TaoJie
School: Nanjing University of Aeronautics and Astronautics
Course: Organic Chemistry
Keywords: Ionic liquids Hydrothermal method Ionic liquid polymer DT polymerization Quasi - solid electrolyte Dye-sensitized solar cells
CLC: O631.23
Type: Master's thesis
Year: 2011
Downloads: 94
Quote: 0
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Abstract


Dye-sensitized solar cells (DSSC) has a low cost , simple fabrication process , can be designed and strong traditional silicon-based solar cells do not have the advantage of domestic and foreign research hotspot . Development so far, the liquid electrolyte that is a DSSC most efficient hole transport materials, but tends to leak and volatile and other shortcomings of its existence , seriously affect the long term stability of the DSSC , hindering the promotion of the practical application of the DSSC . Conversion Prepared quasi - solid electrolyte ionic liquid polymer research work was carried out to solve this problem . First, the use of high-pressure water and heat prepared two room temperature ionic liquid 1 - vinyl-3 - propylimidazolium halogenated salt (ViPrIm X - , X = Cl, Br I ) and a 1 - propyl - triethoxysilane 3 - methylimidazolium iodide salt (TESPIm I-), the structure of the product determined by HPLC, FTIR, 1 H NMR testing means , optimizing the synthetic conditions . ViPrIm X - by free radical polymerization of ionic liquid polymer P ( ViPrIm < / sup> X - ) , FTIR , 1 H NMR, and GPC test results show that this polymerization process, the decay chain transfer polymerization ( DTP ) ; different molar ratios TESPIm I- and TEOS different inorganic content of the ionic liquid is prepared by the sol - gel process functional polysiloxane ( IL -SiO was 2 < / sub> ) , the experimental results show that the ionic liquid polymers are formed in a Si-O-Si structure and having a particle size in the 10 5 < / sup> 00nm and has good thermal stability . Ionic liquids using the synthetic polymer prepared two ionic liquid polymer quasi- solid state electrolyte : single- ion conduction the P ( ViPrIm I - ) / PVDF and in situ IL- SiO 2 / PVDF benchmark solid electrolyte . Wherein the PVDF film was the introduction of the porous structure, the ionic liquid polymer structure significantly reduces the degree of crystallinity of the entire system ; using an electrochemical method of prospective analysis of the impact of the ionic conductivity of the solid electrolyte at room temperature and I3- apparent diffusion coefficient factors ; solar PV the test system test results show that with the increase of the polymer content of the ionic liquid system , the turn-on voltage of the battery is increased , the dark current is reduced , the open circuit voltage increases , the top photoelectric conversion efficiency of the two quasi-solid DSSC system respectively 2.42% and 3.21% .

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CLC: > Mathematical sciences and chemical > Chemistry > Polymer chemistry ( polymer ) > Polymer physics and physical chemistry of polymers > The physical properties of polymers > Electrical Properties
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