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Counter electrode of dye-sensitized solar cell and preparation method of counter electrode

A technology for solar cells and dye sensitization, which is applied in the field of counter electrodes and can solve problems such as manufacturing process defects

Inactive Publication Date: 2015-03-25
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention aims to overcome the defects of the preparation process of the carbon counter electrode in the existing dye-sensitized solar cell, and the invention provides a counter electrode of the dye-sensitized solar cell and its preparation method

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  • Counter electrode of dye-sensitized solar cell and preparation method of counter electrode
  • Counter electrode of dye-sensitized solar cell and preparation method of counter electrode
  • Counter electrode of dye-sensitized solar cell and preparation method of counter electrode

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preparation example Construction

[0023] The invention relates to a method for preparing a low-temperature sintered carbon counter electrode of a dye-sensitized solar cell. The dye-sensitized solar counter electrode consists of two parts: the counter electrode substrate and dry carbon (low-temperature sintered carbon), the low-temperature sintered carbon slurry is self-made, and the slurry is printed on the electrode substrate with a printing stencil, and then sintered at a low temperature (the temperature is lower than 150°C). This pair of electrodes can obtain obviously high conversion rate (up to 8%), and the process is simple.

[0024] The dry carbon slurry is made by mixing and shaking pigmented carbon, carbon fiber, solvent and binder according to the proportion.

[0025] The dry carbon paste is printed onto the substrate with a printing stencil, and the shape and film thickness of the dry carbon can be controlled by the stencil.

[0026] The sintering temperature of dry charcoal can be controlled belo...

Embodiment 1

[0032] Prepare dry carbon slurry: pigment carbon 2600 (24 parts) + carbon fiber VGCF-H (8 parts) + solvent NMP (132 parts) + binder PVDF (PolyVinylidene DiFluoride) (1 part). Mixing equipment: Red Devil mixer. Mixing time: 200 minutes. Mix with Red Devil for 15 minutes before use; use titanium foil with a thickness of 0.1mm as the substrate. Printed with a printing stencil, square; sintered in an infrared furnace, the sintering temperature is 130°C, and the time is 7.5min. Assembled into a battery (the photoanode is a conductive glass coated with titanium dioxide, and the electrolyte is a commonly used liquid electrolyte of iodine and lithium iodide), and the experimental data measured by a solar simulator are as follows: Figure 5 and Table 2.

[0033] Table 2

[0034] Cell

Embodiment 2

[0036] Prepare dry carbon slurry pigment carbon 2600 (3 parts) + carbon fiber VGCF-H (1 part) + solvent NMP (14 parts) + binder KF Polymer L#7305 (2.5 parts). Mixing equipment: shaker. Mixing time: 60 minutes. Infrared furnace sintering, sintering temperature 130 ℃, time 10min. Assembled into a battery (the photoanode is a conductive glass coated with titanium dioxide, and the electrolyte is a commonly used liquid electrolyte of iodine and lithium iodide), and the experimental data measured by a solar simulator are as follows: Figure 6 and Table 3.

[0037] table 3

[0038] Clee

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Abstract

The invention relates to a counter electrode of a dye-sensitized solar cell and a preparation method of the counter electrode. A conductive substrate of the counter electrode is coated with a dry carbon layer formed through low-temperature sintering, wherein the dry carbon layer comprises pigment carbon and carbon fibers, and the mass ratio of the pigment carbon to the carbon fibers is 0.5:1-4:1.

Description

technical field [0001] The invention relates to a counter electrode of a dye-sensitized solar cell and a method for preparing the counter electrode by low-temperature sintering. Background technique [0002] Dye-sensitized solar cells are low-cost solar cells with no pollution, simple process and high theoretical conversion efficiency. High-temperature sintered carbon has been relatively mature as a counter electrode process. Its disadvantage is that the sintering time is too long and the required process line is too long. Therefore, how to develop a counter electrode with excellent performance and simple preparation process is one of the technical problems that those skilled in the art expect to solve. Contents of the invention [0003] The invention aims to overcome the defect of the preparation process of the carbon counter electrode in the existing dye-sensitized solar cell, and the invention provides a counter electrode of the dye-sensitized solar cell and a preparat...

Claims

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Application Information

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IPC IPC(8): H01G9/20
CPCY02E10/542
Inventor 魏冬陈宗琦杨松旺沈沪江刘岩李勇明
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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