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Electrolyte based on zinc iodide and application thereof

A zinc iodide and electrolyte technology, which is applied to circuits, photovoltaic power generation, electrical components, etc., can solve the problems of complex production process of organic iodide, poor long-term stability of alkali metal iodide, high price, etc. Appropriate melting point and easy synthesis

Inactive Publication Date: 2007-03-21
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
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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, complex production process and high price of organic iodides, thereby providing a kind of good long-term stability, simple production process, Inexpensive zinc iodide-based electrolytes, and uses thereof

Method used

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Embodiment 1

[0029] ZnI 2 , I 2 It is mixed with additive A in different proportions listed in Table 1, heated at 25-80°C, and mixed uniformly at a speed of 0-1500 rpm or ultrasonic, etc., to prepare the zinc iodide-based electrolyte 1~ 7.

[0030] They are assembled into dye-sensitized solar cells, and the assembly method is as described in the experimental part of Journal of the American Chemical Society, vol. 115, p. 6382, 1991. Deposit TiO on conductive glass by scratch coating or screen printing 2 The film is annealed at 450°C for 30 minutes. Use this method to deposit TiO 2 Apply the film 2 to 5 times to make the film thickness about 10-20 microns. Anneal at 450℃ for 30 minutes. When the temperature is lowered to about 80℃, the TiO 2 Film immersion dye RuL 2 (NCS) 2 .2 H 2 O (wherein L is 2,2'-bipyridine-4,4'-dicarboxylic acid) in ethanol solution (concentration 0.3mM). After immersing for twelve hours, the slide was taken out and dried under nitrogen. This slide was used as the photoano...

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Abstract

This invention relates to an electrolyte based on ZnI2 with the following formula: ZnI2(L)n+mM+wI2+xG+yCP+zA, in which, ligand L is an organic material coordinated with ZnI2 in following number: 0<=n<=6, the solvent M includes amine, mellow, acid nitrile, aether and ester organic solvents and their mixtures or ionic solution, the mol ratio of which to the ZnI2 is 0<=m<=2000, the mol ratio of I simple substance to ZnI2 is 0<=w<=0.5, the gel G is an organic compound of small molecules or an organic compound of high molecules and the mol ratio of which to the ZnI2 is 0<=x<=1 and that of ceramic powder to ZnI2 is 0<=y<=5 and additive A is a compound capable of improving performance of electrolyte and the ratio to the ZnI2 is 0<=z<=2.

Description

Technical field [0001] The invention relates to an electrolyte material, in particular to an electrolyte based on zinc iodide, and its application in dye-sensitized solar cells and other energy conversion and storage devices. Background technique [0002] In 1991, Professor Grötzel 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. This kind of battery has simple preparation process, low cost and high efficiency, so it has attracted wide attention from scientists 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 iodide in organic solvents such as acetonitrile, methoxyacetonitrile, methoxypropionitrile, ionic liquid, etc., to form a liquid electrolyte; A gel electrolyte or ceramic powder...

Claims

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Application Information

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IPC IPC(8): H01L31/0256H01L31/04H01M14/00H01G9/20
CPCY02E10/50
Inventor 孟庆波刘喜哲薛勃飞李冬梅李泓王兆祥陈立泉
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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