Composite membrane counter electrode used for dye-sensitized solar cells and preparation method thereof

A solar cell and dye sensitization technology, applied in the field of carbon material/polypyrrole composite film counter electrode and its preparation, can solve the problem of high preparation cost of platinum counter electrode, and achieve strong electrochemical reversibility, not easy to fall off, and high catalysis active effect

Inactive Publication Date: 2010-01-20
HEILONGJIANG UNIV
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  • Summary
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of high preparation cost of the platinum counter electrode of the existing dye-sensitized solar cell. The present invention provides a composite film counter electrode for dye-sensitized solar cell and its preparation method

Method used

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  • Composite membrane counter electrode used for dye-sensitized solar cells and preparation method thereof
  • Composite membrane counter electrode used for dye-sensitized solar cells and preparation method thereof
  • Composite membrane counter electrode used for dye-sensitized solar cells and preparation method thereof

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specific Embodiment approach 1

[0018] Embodiment 1: In this embodiment, a composite film counter electrode for dye-sensitized solar cells is sequentially composed of a conductive substrate (1), a carbon material film (2) and a polypyrrole film (3) through the intermolecular The polypyrrole film is a polypyrrole film or a polypyrrole derivative film.

[0019] The structural schematic diagram of the composite film counter electrode used in the dye-sensitized solar cell of the present embodiment is as follows figure 1 shown. The composite film for dye-sensitized solar cells has a dense and uniform counter-electrode structure, strong bonding between adjacent layers, long service life, good stability, good catalytic performance, and controllable size. The photoelectric conversion efficiency of the dye-sensitized solar cell based on the carbon material and the polypyrrole composite film counter electrode of this embodiment reaches 4.267%, which can reach a level comparable to that of the existing conventional Pt...

specific Embodiment approach 2

[0020] Embodiment 2: This embodiment differs from Embodiment 1 in that the thickness of the carbon material film is 6-10 μm, and the thickness of the polypyrrole film is 2-4 μm. Other parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0021] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the conductive substrate is selected from conductive glass, stainless steel metal sheet or insulating material coated with a conductive metal film. Other parameters are the same as those in Embodiment 1 or Embodiment 2.

[0022] The conductive metal described in this embodiment is copper, nickel, zinc, titanium or tin.

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Abstract

The invention relates to a composite membrane counter electrode used for dye-sensitized solar cells (DSSC) and a preparation method thereof, solving the problem that platinum counter electrodes of the existing DSSC have high preparation cost. The composite membrane counter electrode of the invention comprises a conductive substrate, a carbon material membrane and a polypyrrole membrane. The preparation method of the invention comprises the following steps: first preparing electrophoretic liquid of the carbon material and then electrophoretically depositing the carbon material membrane on the conductive substrate; preparing electrodeposition liquid of pyrrole and depositing the polypyrrole membrane on the carbon material membrane by cyclic voltammetry to obtain the carbon material/polypyrrole composite membrane counter electrode. The composite membrane counter electrode of the invention has good catalytic performance, good electrochemical stability, high conductivity and low preparation cost. The photoelectric conversion efficiency of the DSSC based on the composite membrane counter electrode of the invention reaches 4.267%, which is equivalent to that of the existing DSSC based on the Pt counter electrodes.

Description

technical field [0001] The invention relates to a composite film counter electrode of a dye-sensitized solar cell and a preparation method thereof, in particular to a carbon material / polypyrrole compound film counter electrode and a preparation method thereof. Background technique [0002] At present, renewable energy is continuously consumed, and the energy pressure faced by mankind continues to intensify. The research and development of solar cells has obvious and very important strategic significance. Dye-sensitized solar cells are a new type of photoelectrochemical solar cells, mainly composed of dye-sensitized nanocrystalline electrodes, electrolytes and counter electrodes loaded with catalysts, with low cost, simple preparation process and good environment Compatibility, has a good application prospect. [0003] As an important part of dye-sensitized solar cells, the counter electrode is mainly used to collect electrons, and another main function is catalysis to accel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/04H01G9/048H01G9/042H01G9/20H01M14/00H01L51/44H01L51/46H01L51/48
CPCY02E10/542Y02E10/549Y02P70/50
Inventor 牛海军罗俊杨晓斌
Owner HEILONGJIANG UNIV
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