Liquid crystal electrolyte solution for dye-sensitized nano film solar battery
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An electrolyte solution and nano-film technology, applied in the field of chemical electrolytes, can solve problems affecting transmission and battery performance, and achieve strong UV resistance, improved efficiency, and stable performance
Inactive Publication Date: 2010-04-14
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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[0004] Compared with the conventional electrolyte solution for dye-sensitized solar cells, the position orientation of the molecules that make up the liquid crystal is orderly, and the existence of this special microstructure can affect the redox couple in the electrolyte solution for dye-sensitized solar cells. transmission, which in turn affects the performance of the battery
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Embodiment 1
[0035] per dm 3 In the solution, the content of each component is respectively:
[0036] Component 2: lithium iodide: 0.1mol dm -3
[0037] Iodine: 0.1mol·dm -3
[0038] Component 3: Benzimidazole: 0.5mol·dm -3
[0039] Component 4: 0
[0040] Component 5:
[0041] Component 6: 0
[0042] Component 7: 0
[0043] The rest of the solution volume is component 1-liquid crystal electrolyte: 1-dodecyl-3-methylimidazolium iodine;
Embodiment 2
[0045] per dm 3 In the solution, the content of each component is respectively:
[0064] The rest of the solution volume is composed of component 1 - liquid crystal electrolyte: 1-dodecyl-3-methylimidazolium tetrafluoroborate and component 6 - organic solvent: 3-methoxypropionitrile. Wherein the mass fraction of 3-methoxy propionitrile is less than 10% in the whole solution.
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Abstract
The invention discloses a liquid crystal electrolyte solution for a dye-sensitized nano film solar battery, which is formed from components 1 and 2 or components 1, 2 and 6 as main components by compounding or not compounding one or several components in other four components, wherein the component 1 is liquid crystal electrolyte; the component 2 is an oxidation-reduction pair with good electrochemical reversibility; the component 3 is a dark current inhibitor; the component 4 is a hetero-atom containing compound acting with positive ions in the electrolyte solution; the component 5 is a hetero-atom containing compound acting with I2 in the electrolyte solution; the component 6 is an organic solvent or an ionic liquid; and the component 7 is a compound for improving the ultraviolet performance of the battery. The liquid crystal electrolyte solution has the advantages of higher electrical conductivity, good electrochemical reversibility, good low-temperature stability, stronger ultraviolet resistance, efficiency improvement of the solar battery, life prolonging of the solar battery, stable performance, no environmental pollution and the like.
Description
Technical field: [0001] The invention belongs to the field of chemical electrolytes and relates to a liquid crystal electrolyte solution for a dye-sensitized nano film solar cell. Background technique: [0002] Dye-sensitized nano-thin film solar cells were developed by the Swiss Institute of Advanced Technology in Lausanne (EPFL) The research team led by the professor first proposed in 1991 that the photoelectric conversion efficiency of the cell reached 7.1% under AM1.5 simulated sunlight. At present, the photoelectric conversion efficiency of the battery has been increased to 10% to 11%, and the life span has reached more than 20 years, so it has become a hot research topic at home and abroad in recent years. Dye-sensitized nano-thin film solar cells are mainly composed of transparent conductive glass, nano-TiO 2 It consists of porous film, sensitizing dye, electrolyte and counter electrode. Among them, the electrolyte plays the role of regenerating dyes and transport...
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