染料敏化太阳能电池氮化碳对电极的研究

发布时间：2018-06-05 14:55

本文选题：染料敏化太阳能电池 + 对电极　；参考：《山东理工大学》2015年硕士论文

【摘要】：染料敏化太阳能电池(Dye-sensitized Solar Cells,DSSCs)是一种新型的高效太阳能电池。铂(Pt)因为高催化性和高导电性而广泛应用于DSSCs对电极上。但由于Pt价格昂贵,所以寻找廉价的非铂对电极成为近年来的研究热点。本文制备了多孔氮化碳及其复合材料,并应用于DSSCs对电极上,对其电催化性能进行了研究。通过高温碳化法和软模板法制备了多种无孔和多孔氮化碳,应用于DSSCs对电极中显示出良好的光电化学性能。其中以三聚氰胺为原料通过软模板法制备的多孔氮化碳的光电转换效率最高,可达2.07%,表明大的比表面积有利于提高氮化碳的电催化性能。利用研磨法制备的氮化碳/导电炭黑复合材料,显示出良好的催化活性和优良的导电性。其中当氮化碳与导电炭黑以1:7的质量比掺杂时,复合材料具有最优的电化学性能,并得到了4.74%的光电转换效率,达到相同条件下Pt电极的93.12%。以石墨为原料制备了氧化石墨烯,并利用水热法将其与氮化碳复合后制备的氮化碳/石墨烯复合材料,在光电化学方面显示了良好的性能。结果表明,当氮化碳与石墨烯以3:1的质量比复合时,材料的光电转换效率高达4.47%,是同等条件下Pt电极的88.17%。利用高温煅烧法制备了氮化碳/多壁碳管复合材料,其在电催化方面显示出良好的活性,并具有优良的导电性,通过对其光电测试结果分析得出,当单氰胺与多壁碳管以15:1的质量比进行复合时,所得的复合材料的光电转换效率最高,可达4.49%,是同等条件下Pt电极的的86.68%。
[Abstract]:Dyestuff sensitized solar cell (Dye-sensitized Solar cells DSSCs) is a new type of highly efficient solar cell. Due to its high catalytic and electrical conductivity, Platinum Ptis widely used in DSSCs pair electrodes. However, due to the high price of Pt, the search for cheap non-platinum pair electrodes has become a hot topic in recent years. In this paper, porous carbon nitride and its composites were prepared and applied to DSSCs pair electrode, and their electrocatalytic properties were studied. Several kinds of porous and porous carbon nitride were prepared by high temperature carbonization and soft template method, and the photochemical properties of DSSCs electrodes were demonstrated. The photoelectricity conversion efficiency of porous carbon prepared by soft template method using melamine as raw material is the highest, which can reach 2.07, which indicates that large specific surface area is beneficial to improve the electrocatalytic performance of carbon nitride. The carbon nitride / conductive carbon black composite prepared by grinding method shows good catalytic activity and good electrical conductivity. When the carbon nitride and conductive carbon black were doped at 1:7 mass ratio, the composite had the best electrochemical performance, and the photoelectric conversion efficiency of 4.74% was obtained, which reached 93.12% of the Pt electrode under the same conditions. Graphene oxide was prepared by using graphite as raw material, and the carbon nitride / graphene composite was prepared by hydrothermal method. The results show that when the ratio of carbon nitride and graphene is 3:1, the photoelectric conversion efficiency of the material is as high as 4.47, which is 88.17 of Pt electrode under the same conditions. Carbon nitride / multiwalled carbon tube composites were prepared by high temperature calcinations. The composites showed good electrocatalytic activity and excellent electrical conductivity. When the ratio of Monocyanamide and multiwalled carbon tube is 15:1, the optoelectronic conversion efficiency of the composite is the highest, up to 4.49, which is 86.68 of Pt electrode under the same conditions.
【学位授予单位】：山东理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB33;TM914.4

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