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Preparation method of polyaniline nanowire array counter electrode of dye-sensitized solar cell

A solar cell and dye-sensitized technology, applied in the field of dye-sensitized solar cells, can solve the problems of cumbersome experimental equipment or high-temperature sintering, harsh preparation conditions, high production costs, etc., achieve the best energy conversion efficiency, low price, and reduce comprehensive cost effect

Inactive Publication Date: 2013-06-12
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, there have been many related reports, such as CoS (J. Am. Chem. Soc., 2009, 131, 15976), TiN (Chem. Comm., 2009, 47, 6720), MoC (Angew. Chem. Int. Ed., 2011, 50, 3582), etc., have obtained higher photoelectric conversion efficiency, but most of these methods require cumbersome experimental equipment or high-temperature sintering, the preparation conditions are relatively harsh, and high production costs are also required. Therefore, through simple The easy method to prepare high-efficiency counter electrode materials has important practical application value

Method used

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  • Preparation method of polyaniline nanowire array counter electrode of dye-sensitized solar cell
  • Preparation method of polyaniline nanowire array counter electrode of dye-sensitized solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Add 2 mM aniline and 2 mM ammonium persulfate into a 1000 mL beaker, then add 1 mM hydrochloric acid and stir well, then put a thoroughly cleaned FTO conductive glass into the beaker, and conduct a hydrothermal reaction at 50 °C for 24 h. After the reaction, the hydrothermal kettle was naturally cooled to room temperature, and the conductive glass was taken out, rinsed and dried. Electron microscope photos such as figure 1 (a) shown.

[0015] This counter electrode was assembled into DSSCs according to the standard method, with a cell area of ​​0.2304 cm 2 . The current-voltage (I-V) curve of the dye-sensitized solar cell was measured under AM1.5 simulated sunlight ( figure 2 shown in curve 1), to obtain the open circuit photovoltage ( V oc ) is 760 mV, and the short-circuit photocurrent ( J sc ) is 12.85 mA / cm 2 , fill factor ( FF ) is 0.69, the energy conversion efficiency ( n ) is 6.73%. The current-voltage curve such as figure 2 (a) shown.

Embodiment 2

[0017] Add 6 mM aniline and 9 mM ammonium persulfate into a 1000 mL beaker, then add 2 mM benzenesulfonic acid and stir well, then put a thoroughly cleaned FTO conductive glass into the beaker, and conduct a hydrothermal reaction at 10 °C for 12 h. After the reaction, the hydrothermal kettle was naturally cooled to room temperature, and the conductive glass was taken out, rinsed and dried. Electron microscope photos such as figure 1 (b) shown.

[0018] This counter electrode was assembled into DSSCs according to the standard method, with a cell area of ​​0.2304 cm 2 . The current-voltage (I-V) curve of the dye-sensitized solar cell was measured under AM1.5 simulated sunlight ( figure 2 shown in curve 1), to obtain the open circuit photovoltage ( V oc ) is 780 mV, and the short-circuit photocurrent ( J sc ) is 14.16 mA / cm 2 , fill factor ( FF ) is 0.68, and the energy conversion efficiency ( n ) is 7.51%. The current-voltage curve such as figure 2 (b) shown.

Embodiment 3

[0020] Add 11 mM aniline and 10 mM ammonium persulfate into a 1000 mL beaker, then add 1.5 mM perchloric acid and stir well, then put a thoroughly cleaned FTO conductive glass into the beaker, and conduct a hydrothermal reaction at 0°C for 24 h. After the reaction, the hydrothermal kettle was naturally cooled to room temperature, and the conductive glass was taken out, rinsed and dried. Electron microscope photos such as figure 1 (c) shown.

[0021] This counter electrode was assembled into DSSCs according to the standard method, with a cell area of ​​0.2304 cm 2 . The current-voltage (I-V) curve of the dye-sensitized solar cell was measured under AM1.5 simulated sunlight ( figure 2 shown in curve 1), to obtain the open circuit photovoltage ( V oc ) is 780 mV, and the short-circuit photocurrent ( J sc ) is 15.33 mA / cm 2 , fill factor ( FF ) is 0.67, the energy conversion efficiency ( n ) is 8.01%. The current-voltage curve such as figure 2 (c) shown.

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Abstract

The invention belongs to the technical field of dye-sensitized solar cells, in particular to a preparation method of a polyaniline nanowire array counter electrode of a dye-sensitized solar cell. According to the invention, a polyaniline nanowire array is prepared through a method of oxidative polymerization, and is grown on a conductive substrate in situ, the polyaniline nanowire array is directly applied to the dye-sensitized solar cell, and energy exchange efficiency, which is better than pyrogenic decomposition of a platinum counter electrode, can be obtained through combination with a non-corrosive electrolyte. The preparation method, provided by the invention, has the advantages of simple process, and high catalytic activity and low price of the prepared non-platinum electrode, the cost of the electrode is greatly reduced, so that the composite cost of the dye-sensitized solar cell is reduced, and the preparation method is applied to industrial production of the large-scale dye-sensitized solar cells.

Description

technical field [0001] The invention belongs to the technical field of dye-sensitized solar cells, and in particular relates to a preparation method of a polyaniline nanowire alignment counter electrode of a dye-sensitized solar cell. Background technique [0002] Since Professor M. Grötzel introduced the concept of nanoporosity into dye-sensitized wide bandgap TiO in 1991, 2 In semiconductor research, since dye-sensitized solar cells (DSSCs) with an energy conversion efficiency of 7.1% were obtained (Nature, 1991, 353, 737), DSSCs are characterized by their low cost, relatively simple manufacturing process, high The photoelectric conversion efficiency and other characteristics have quickly attracted widespread attention from the international academic and industrial circles. [0003] DSSCs mainly consist of dye-sensitized porous semiconductor nanocrystal films, electrolytes, and counter electrodes. The dye molecules are excited by the light, electrons are injected into th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/042H01G9/20
CPCY02E10/542
Inventor 王忠胜王鸿
Owner FUDAN UNIV
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