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Electrolyte based on aluminium iodide and its application

A technology of aluminum iodide and electrolyte, which is applied in the preparation of aluminum halides, iodides, circuits, etc., can solve the problems of complex production process of organic iodides, poor long-term stability of alkali metal iodides, and high price, and achieve cheap raw materials , suitable melting point and easy synthesis

Inactive Publication Date: 2007-02-14
INST OF PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of poor long-term stability of alkali metal iodides in the existing iodide electrolytes, complicated manufacturing process of organic iodides, and high price, thereby providing a kind of good long-term stability, simple manufacturing process, Inexpensive aluminum iodide-based electrolytes, and uses thereof

Method used

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Embodiment 1

[0029] AlI 3 , I 2 Mix with additive A in different proportions listed in Table 1, heat at 25-80°C, and mix uniformly with stirring at a speed of 0-1500 rpm or ultrasonically, to prepare aluminum iodide-based electrolytes 1-1 of the present invention. 7.

[0030] It was assembled into a dye-sensitized solar cell as described in the experimental part of Journal of the American Chemical Society, vol.115, p.6382, 1991. Deposition of TiO on conductive glass by blade coating or screen printing 2 Thin films were annealed at 450°C for 30 minutes. Deposit TiO by this method 2 Thin film 2~5 times, make film thickness be about 10~20 microns. Then anneal at 450°C for 30 minutes, and when the temperature is lowered to about 80°C, the TiO 2 Dye RuL 2 (NCS) 2 .2H 2 O (where L is 2,2'-bipyridine-4,4'-dicarboxylic acid) in ethanol solution (concentration: 0.3 mM). After soaking for twelve hours, the glass slide was taken out and dried under nitrogen gas. This glass slide served as t...

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Abstract

The electrolyte based on AlI3 has the general expression of AlI3(L)n+mM+wI2+xG+yCP+zA, where, the ligand L is organic matter capable of coordinating with AlI3 and the coordination number n is 0-6; the solvent M may be amines, alcohols, nitriles or other organic solvent or ionic liquid and the coordination number m is 0-2000; w as the molar ratio between simple substance I and AlI3 is 0-0.5; the gel G is organic small molecular weight compound or organic high molecular weight compound with the molar ratio to AlI3 x of 0-1; the ceramic powder CP has molar ratio to AlI3 y of 0-5; and the additive A is compound for improving the performance of the electrolyte with the molar ratio to AlI3 z of 0-2. The electrolyte has high long term stability, high conductivity and proper smelting point, and may be used in dye sensitized solar cell and other energy converting and storing devices.

Description

technical field [0001] The invention relates to an electrolyte material, in particular to an aluminum iodide-based electrolyte and its application in dye-sensitized solar cells and other energy conversion and storage devices. Background technique [0002] In 1991, Professor Grtzel Michael of the Swiss Federal Institute of Technology and his collaborators published an article in the journal Nature (Nature, Vol. 353, Page 737, 1991 (Nature, Vol. 353, 737, 1991)), introducing A new type of solar cell - dye-sensitized solar cell. The preparation process of this kind of battery is simple, low in cost and high in efficiency, so it has been widely concerned by scientists from all over the world. At present, the electrolytes used in this battery are mainly divided into three categories: one is to dissolve inorganic or organic iodides in organic solvents such as acetonitrile, methoxyacetonitrile, methoxypropionitrile, and ionic liquids to form liquid electrolytes; A gelling agent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/48C01B9/06H01L31/04H01G9/20
CPCY02E10/542Y02P20/54
Inventor 孟庆波薛勃飞李泓刘喜哲李冬梅陈立泉
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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