Method for preparing counter electrode based on electrochemical synthesized polyaniline on surface of stainless steel

A synthesis method and stainless steel technology, applied in capacitor electrodes, electrolytic capacitors, circuits, etc., can solve the problems of poor glass substrate bonding force, uneven polyaniline film, poor polyaniline solubility, etc., and achieve cost reduction, low production cost, Good application prospects and economic benefits

Inactive Publication Date: 2010-06-16
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, it has been studied that polyaniline is generated by chemical oxidation, and coated on the surface of conductive glass to prepare counter electrode (Li Qinghua, Wu Jihuai, Tang Qunwei, Lan Zhang, Li Pinjiang, Lin Jianming, Fan Leqing, Electrochem Commun, 2008, 10 (9) 1299-1302), but the main problem is that the solubility of polyaniline is poor, the polyaniline film obtained by coating the polyaniline solution on the surface of the substrate, and then evaporating the solvent is very uneven, and the bonding force with the glass substrate is poor

Method used

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  • Method for preparing counter electrode based on electrochemical synthesized polyaniline on surface of stainless steel
  • Method for preparing counter electrode based on electrochemical synthesized polyaniline on surface of stainless steel
  • Method for preparing counter electrode based on electrochemical synthesized polyaniline on surface of stainless steel

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Embodiment 1

[0020] The first step is to first immerse a piece of stainless steel sheet and another stainless steel sheet with a slightly larger size in alkali solution to remove oil, take it out, rinse it with hot water at 50°C, and then rinse it with cold water at 0°C, then put the substrate into the chemical Polishing treatment is carried out in polishing liquid to remove the oxide layer on the surface. Finally, the polished substrate was rinsed with distilled water and dried for use.

[0021] In the second step, add aniline and sulfuric acid into water to form a solution with an aniline monomer concentration of 0.1 mol / L and a sulfuric acid solution concentration of 0.1 mol / L, and form a uniform and transparent mixed solution by magnetic stirring. Use a slightly smaller stainless steel substrate as the working electrode, and another slightly larger stainless steel sheet as the counter electrode, put it into the prepared aniline-sulfuric acid solution, and use the constant potential met...

Embodiment 2

[0024] The first step is to immerse a piece of stainless steel sheet and another stainless steel sheet with a slightly larger size in lye to remove oil, take it out, rinse it with hot water at 60°C, and then rinse it with cold water at 10°C, then put the substrate into the chemical Polishing treatment is carried out in polishing liquid to remove the oxide layer on the surface. Finally, the polished substrate was rinsed with distilled water and dried for use.

[0025] In the second step, add aniline and sulfuric acid into water to form a solution with an aniline monomer concentration of 0.3 mol / L and a sulfuric acid solution concentration of 0.5 mol / L, and form a uniform and transparent mixed solution by magnetic stirring. A slightly smaller stainless steel substrate was used as the working electrode, another slightly larger stainless steel sheet was used as the counter electrode, and the prepared aniline-sulfuric acid solution was put into the prepared aniline-sulfuric acid so...

Embodiment 3

[0028] The preparation method of electrochemically synthesizing polyaniline counter electrode based on stainless steel surface comprises the following steps:

[0029] The first step is to immerse a piece of stainless steel sheet and another stainless steel sheet with a slightly larger size in lye to remove oil, take it out, rinse it with hot water at 70°C, and then rinse it with cold water at 20°C, then put the substrate into the chemical Polishing treatment is carried out in polishing liquid to remove the oxide layer on the surface. Finally, the polished substrate was rinsed with distilled water and dried for use.

[0030] In the second step, add 0.4 mol / L aniline and 1.0 mol / L sulfuric acid into water, and magnetically stir to form a 50 ml uniform and transparent mixed solution. Take a cleaned and polished 304 stainless steel substrate as the working electrode, and another 304 stainless steel sheet with a slightly larger size as the counter electrode, put it into the prepar...

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Abstract

The invention discloses a method for preparing a counter electrode based on electrochemical synthesized polyaniline on the surface of stainless steel. The method comprises the following steps: firstly, washing and chemically polishing a stainless steel sheet to eliminate an oxide layer on the surface; secondly, taking a washed stainless steel substrate as a working electrode, and taking another stainless steel sheet with slightly large size as the counter electrode; thirdly, placing the working electrode and the counter electrode in mixed solution, of aniline and sulphuric acid, with a certain concentration; fourthly, performing electrochemical polymerization with continuous stirring; and finally, rinsing sample sheets with dilute sulfuric acid solution and distilled water orderly after reaction, and drying the sample sheets in vacuum to obtain a stainless steel base polyaniline counter electrode. The stainless steel base polyaniline counter electrode prepared by an electrochemistry method has low cost and simple manufacturing process, and can obtain wide application prospect in the field of dye-sensitized solar cells.

Description

technical field [0001] The invention relates to a preparation method for electrochemically synthesizing a polyaniline counter electrode on the surface of a stainless steel substrate. Background technique [0002] Dye-sensitized solar cells are a new type of photovoltaic cells with high efficiency and low price. The battery is mainly made of nano TiO 2 Composition of photoanode, electrolyte and counter electrode. At present, the commonly used counter electrode is a platinum-coated electrode obtained by magnetron sputtering or vacuum vapor deposition on a transparent conductive glass substrate. However, this platinum electrode is expensive to manufacture, which greatly limits the production and application of dye-sensitized solar cells. Therefore, the use of conductive polymers as the counter electrode can further improve the catalytic ability of the counter electrode while reducing the cost of raw materials, and promote the process of practical application of dye-sensitized...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/04H01G9/20H01M14/00H01L51/44H01L51/48
CPCH01G9/2059Y02E10/542H01G9/2022H01G9/2031Y02P70/50
Inventor 陶杰秦琦杨艳金鑫
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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