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Full carbon counter electrode dye-sensitized solar cell and preparing method

A technology for solar cells and dye sensitization, applied in the field of counter electrodes and their preparation, can solve problems such as electrode composition and production that are not involved, and achieve the effects of lightening, simplifying the preparation process, and reducing transportation costs.

Active Publication Date: 2009-03-18
深圳市华物光能技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this patent application only involves the formulation and preparation method of the carbon paste used as the counter electrode of the dye-sensitized solar cell, and does not involve the composition and production of the counter electrode used as the dye-sensitized solar cell

Method used

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  • Full carbon counter electrode dye-sensitized solar cell and preparing method
  • Full carbon counter electrode dye-sensitized solar cell and preparing method
  • Full carbon counter electrode dye-sensitized solar cell and preparing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Select graphite paper with a thickness of 0.3mm and a surface resistance of 0.1Ω / □ as the conductive carbon substrate A, and select a specific surface area of ​​1958m 2 / g of activated carbon is a catalytically active material. According to the preparation method of the carbon slurry of the patent publication number CN101188257A, the carbon slurry is prepared, and ZrO is added in different proportions in the carbon slurry 2 Ceramic powder (the data of 6 kinds of embodiments is listed in Table 1), the prepared carbon slurry is coated on the carbon substrate A to form a catalytically active material layer B, wherein the thickness of the catalytically active material layer B is: 15 μm.

[0037] The concrete preparation process of the all-carbon counter electrode of 6 kinds of embodiments in table 1 is as follows:

[0038] 1) First prepare carbon slurry 1-6 according to the preparation method of carbon slurry in patent publication number CN101188257A, that is, change the s...

Embodiment 2

[0047] Graphite paper with a thickness of 0.5mm and a surface resistance of 0.07Ω / □ was selected as the conductive carbon substrate A, and the specific surface area was selected to be 830m 2 / g and 77m 2 / g of activated carbon and carbon black are catalytically active materials. Prepare carbon slurry according to the preparation method of the carbon slurry of patent publication number CN101188257A, add the ceramic powder of 1.2g in carbon slurry simultaneously, the type and size of ceramic powder are shown in Table 2 (the data of 6 kinds of embodiments are listed in Table 2 Middle), activated carbon and carbon black according to the mass ratio of 80:20, the carbon slurry is coated on the carbon substrate A to form a catalytic active material layer B, wherein the thickness of the catalytic active material layer B is: 10 μm. .

[0048] The concrete preparation process of the all-carbon counter electrode of 6 kinds of embodiments in table 2 is as follows:

[0049] 1) First pre...

Embodiment 3

[0058] A graphite plate with a thickness of 2mm and a surface resistance of 0.03Ω / □ was selected as the conductive carbon substrate A, and flake graphite with a specific surface area of ​​13m2 / g was used as the catalytic active material. Prepare carbon slurry according to the preparation method of the carbon slurry of patent publication number CN101188257A, add the ceramic powder of 1.2g in carbon slurry simultaneously, the type and size of ceramic powder are shown in Table 3 (the data of 6 kinds of embodiments are listed in Table 3 Middle), the carbon slurry is coated on the carbon substrate A to form a catalytically active material layer B, wherein the thickness of the catalytically active material layer B is: 20 μm.

[0059] The specific preparation process of the all-carbon counter electrode including 6 kinds of embodiments in Table 3 is as follows:

[0060] 1) Firstly, prepare carbon slurry 13-18 according to the preparation method of carbon slurry in the patent (publicat...

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Abstract

The invention relates to an all carbon counter electrode for a dye-sensitized solar cell and a process for preparation, wherein the all carbon counter electrode is formed by a carbon substrate A and a carbon catalytic active layer B which is coated on the carbon substrate. The process for preparing the all carbon counter electrode comprises firstly dispersing carbon catalytic active material and making into carbon paste according to the process of preparing carbon paste disclosed by the patient closure number CN101188257A, then transferring to the clean carbon substrate A through the methods of screen painting, spread coating, rotary film coating, film dropping or Czochralski method, and finally preparing the all carbon counter electrode through drying or kilning. The all carbon electrode of the invention can reduce series resistance and interface resistance, thereby increasing the short-circuit current (Jsc), filling factor (FF) and photoelectric transformation efficiency of the dye-sensitized solar cell. The substrate material adopted by the all carbon counter electrode of the invention has smaller resistance, can reduce using or avoid using metal flow concentration leads, and simplifies preparation technology.

Description

technical field [0001] The invention relates to a counter electrode of a solar cell and a preparation method thereof, in particular to a counter electrode in which both the substrate and the catalytic active layer of a dye-sensitized solar cell are made of carbon materials and a preparation method thereof. Background technique [0002] Since 1991, Swiss scientists Since the group reported the breakthrough progress of dye-sensitized solar cells (Dye-sensitized Solar Cells, referred to as DSCs) in Nature (Nature, Volume 353, Page 737, 1991 (Nature, Vol.353, 737, 1991)), Because of its low price of raw materials, simple preparation process, stable performance and high efficiency, it has attracted wide attention from scientists and industries all over the world, and has great application prospects. [0003] This battery generally consists of three parts: a semiconductor thin film photoanode with dyes adsorbed on it, a redox couple (I 3 - / I - ) electrolyte and counter elect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20H01G9/04H01M14/00H01M4/02H01M4/04H01L31/0224H01L31/18
CPCY02E10/542Y02E60/10Y02P70/50
Inventor 孟庆波李可心罗艳红李冬梅
Owner 深圳市华物光能技术有限公司
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