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All-solid-state organic alloy electrolyte for dye-sensitized solar battery

A technology of solar cells and organic alloys, applied in capacitor electrolytes/absorbents, electrolytic capacitors, electric solid devices, etc., can solve the problems of low melting point, low photoelectric conversion efficiency, difficult dye-sensitized solar cells, etc., and achieve simple process, Conditions are easy to control and the effect of good long-term stability

Active Publication Date: 2010-06-02
常熟紫金知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the disadvantages of low photoelectric conversion efficiency, low melting point, and difficulty in being used as an electrolyte for dye-sensitized solar cells in the prior art, and to provide a simple and low-cost solid electrolyte that can be used for dye-sensitized solar cells. All-solid-state organic alloy electrolyte for ultra-thin solar cells and preparation method thereof

Method used

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  • All-solid-state organic alloy electrolyte for dye-sensitized solar battery
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  • All-solid-state organic alloy electrolyte for dye-sensitized solar battery

Examples

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Comparison scheme
Effect test

Embodiment 1

[0018] Select two plastic crystals of neopentyl glycol (NPG) and succinonitrile (SCN), weigh NPG and SCN according to the molar ratio of 0%, 20%, 40%, 60%, 80%, and 100%, and put them in Heat together until completely melted, stir to make the mixture uniform, and cool to obtain an organic alloy. The melting point of these solid organic alloys increased with increasing NPG content, from 58°C to 122°C. Then add 1-5% iodine, 1-10% lithium iodide, 1-10% methyl ethyl imidazole iodine and other electrolytes that occupy the amount of the organic alloy substance, heat until completely melted, stir evenly, and cool to room temperature , that is, a solid organic alloy electrolyte is obtained. The melting point of the organic alloy electrolyte solution with NPG content of 80% reaches above 80°C.

[0019] figure 1 It is a graph of the conductivity of the organic alloy electrolyte at different temperatures. It can be seen from the figure that the organic alloy electrolyte has a high ro...

Embodiment 2

[0026] Two plastic crystals are selected, namely pentaerythritol (PER) and succinonitrile (SCN). Weigh PER and SCN according to the molar ratio of 20%, 40%, 60%, and 80%, and heat them together until they are completely melted, stir to make the mixture uniform, and cool to obtain an organic alloy material. Then add electrolytes such as 1-5% iodine, 1-10% lithium iodide, 1-10% methyl ethyl imidazole iodine, 1-10% tert-butylpyridine and other electrolytes of the amount of the organic alloy substance, and heat until completely melted, stirred evenly, and cooled to room temperature to obtain a solid organic alloy electrolyte. The room temperature conductivity of the solid organic alloy electrolyte reaches 0.05 ms cm -1 ~3ms cm -1 . The melting point of the organic alloy electrolyte with PER content of 80% reaches above 80°C. The photoelectric efficiency of DSSCs prepared from these solid organic alloy electrolytes reaches 2%-5%.

Embodiment 3

[0028] Choose neopentyl glycol (NPG), succinonitrile (SCN) and picoline iodine (MPI) three plastic crystals. Weigh NPG, SCN and MPI according to the molar ratio of 1:1:0, 1:1:1, 2:2:1, 3:3:1, 1:2:1, 2:1:1, and put Heat together until completely melted, stir to make the mixture uniform, and cool to obtain an organic alloy material. Then add 1-5% iodine, 1-10% lithium iodide, 1-10% methyl ethyl imidazole iodine and other electrolytes that occupy the amount of the organic alloy substance, heat until completely melted, stir evenly, and cool to room temperature , that is, a solid organic alloy electrolyte is obtained. The room temperature conductivity of the solid organic alloy electrolyte reaches 0.1 ms cm -1 ~5ms cm -1. The melting point of some organic alloy electrolytes has reached above 80°C. The photoelectric efficiency of DSSCs prepared from these solid organic alloy electrolytes reaches 2%-5%.

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Abstract

The invention discloses an all-solid-state organic alloy electrolyte for a dye-sensitized solar battery and a preparation method thereof. The electrolyte comprises an organic alloy material prepared from more than two or three plastic crystals selected from succinonitrite, neopentyl glycol, trimethylolethane, pentaerythritol, camphor, imidazole and the derivative quaternary ammonium salt thereof and pyridine and the derivative quaternary ammonium salt thereof, iodine accounting for 1-5 percent of the amount of substance of the organic alloy, lithium iodide or potassium iodide or sodium iodide accounting for 1- 10 percent of the amount of substance of the organic alloy and one or more of methyl ethyl imidazole iodine, tert-butyl pyridine, LiTFSI and LiBF4 conducting salt, which account for 1- 10 percent of the amount of substance of the organic alloy. The prepared electrolyte has a high melting point (more than 80 DEG C) and equivalent electrical conductivity with a liquid electrolyte, and the dye-sensitized solar battery (DSSCs) prepared from the electrolyte has high photoelectric transformation efficiency and stability.

Description

technical field [0001] The invention relates to a solid electrolyte used in the fields of solar cells and a preparation method thereof, in particular to an all-solid organic alloy electrolyte used in dye-sensitized solar cells (DSSCs) and a preparation method thereof. Background technique [0002] With the continuous depletion of fossil fuels and the increasingly serious environmental pollution, people have to look for clean and renewable energy to replace the current energy. Solar energy is widely distributed on the earth, and it is inexhaustible and inexhaustible. It is a real green energy. Therefore, research on the development and utilization of solar energy has developed particularly rapidly in recent years. Existing photovoltaic cells based on inorganic silicon and semiconductors are expensive. Although their prices have dropped a lot after decades of technology and process improvements, they are still beyond the acceptable range of people, and further substantial pri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01G9/025H01G9/00H01M14/00H01L51/42H01L51/48
CPCH01G9/2059Y02E10/542H01G9/2009H01G9/2031
Inventor 杨汉西姜燕曹余良艾新平
Owner 常熟紫金知识产权服务有限公司
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