Carbon plasm for electrode of dye sensitization solar battery pair and its making method

A technology of solar cells and dye sensitization, applied in the field of electrodes, can solve the problems of unfavorable large-scale promotion and application, complex production process, high electrode cost, and achieve good short-circuit current and photoelectric conversion efficiency, uniform distribution of holes, and material cost. reduced effect

Inactive Publication Date: 2008-05-28
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to: overcome the high cost of existing electrodes made of noble metal platinum, which is not conducive to large-scale promotion and application; Provide a paste made of cheap carbon material that can be used for the counter electrode of dye-sensitized solar cells

Method used

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  • Carbon plasm for electrode of dye sensitization solar battery pair and its making method
  • Carbon plasm for electrode of dye sensitization solar battery pair and its making method
  • Carbon plasm for electrode of dye sensitization solar battery pair and its making method

Examples

Experimental program
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Embodiment 1

[0044]1. First, prepare hard carbon powder according to the synthesis method described in Example 4 in the patent publication number CN1191195C, and then use a ball mill or other crushing and grinding equipment to grind the hard carbon powder to obtain The particle size is about 6μm, and the specific surface area is 400m 2 / g hard carbon powder, weigh 6.000g hard carbon powder for use;

[0045] 2. Configure the liquid mixture, weigh according to the following components and formula:

[0046] (a) Ethyl cellulose (viscosity modifier) ​​0.2000g

[0047] (b) Isopropanol (solvent) 15ml;

[0048] 3. Dissolve the weighed ethyl cellulose in isopropanol, and perform mechanical stirring to mix evenly. The mechanical stirring time is 5 minutes, and the temperature is kept at 20-30°C to form a transparent liquid mixture;

[0049] 4. Mix the liquid mixture prepared above with 6.000 g of hard carbon powder, and mix with a ball mill for 4 hours to prepare a carbon slurry.

Embodiment 2

[0051] Weigh 0.2000 g of ethyl cellulose (viscosity modifier), add it to 15 ml of isopropanol (solvent), keep the temperature at 20-30°C, stir for 30 minutes to dissolve. Then 0.5000 g of Triton 100 was added and mixed uniformly to prepare a liquid mixture. Other conditions and steps were the same as in Example 1, to prepare a carbon slurry.

Embodiment 3

[0053] Weigh 0.2500g of ethyl cellulose (viscosity modifier), add it to 15ml of isopropanol (solvent), keep the temperature at 20-30℃, stir for 1 hour to dissolve, and then add 0.5000g of surfactant Triton100 , 5.000g of pore-forming material polyethylene glycol 600 and 0.1000 binder tin dioxide are mixed uniformly, as a liquid mixture. Other conditions and steps were the same as in Example 1, to prepare a carbon slurry.

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Abstract

The invention relates to carbon paste of electrodes for a dye-sensitized solar cell and a preparation method. The carbon paste comprises liquid mixture and solid carbon powder, wherein, the liquid mixture is 15-95wt percent and the solid carbon powder is 5-85wt percent, wherein, the liquid mixture is mixed by 0.5percent-40wtpercent of viscosity modifier and 20-99.5wtpercent of solvent. Owing to the addition of the viscosity modifier and the solid powder with particle size less than 1mm and 10-2000m<2>/g of specific surface area in the carbon paste, the viscosity of the paste can be controlled, the carbon paste disperses uniformly, and the paste can keep long-term stabilization. Pore inducing materials can be added in the carbon paste, porous solid thin films for batteries can be conveniently prepared by the carbon paste. The thin film is a solid carbon thin film with smooth surface, large surface area, uniform distribution of pores and firm combination with substrates.

Description

Technical field [0001] The invention relates to an electrode based on hard carbon materials and semiconductor materials, in particular to a carbon paste used for the counter electrode of a dye-sensitized solar cell and a preparation method thereof. Background technique [0002] Since 1991, the Swiss Federal Institute of Technology Professor Michael and his collaborators invented a new type of solar cell-nanocrystalline dye-sensitized solar cell (Nature, Vol. 353, p. 737, 1991 (Nature, Vol. 353, 737, 1991)). Because of its simple preparation process, low cost, and high efficiency, batteries have attracted the attention of scientists from all over the world. This battery consists of three parts: a titanium dioxide photoanode with a layer of dye adsorbed, a counter electrode and an electrolyte between the two electrodes. [0003] At present, the counter electrode used in this kind of battery is mainly divided into two categories: one is based on the precious metal platinum electrod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01M14/00H01G9/04H01G9/20H01B1/04
CPCY02E10/542Y02P70/50
Inventor 孟庆波黄振罗艳红李泓陈立泉
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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