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

A technology for solar cells and dye sensitization, applied in the field of MnO2/conductive polymer composite film counter electrode and its preparation, can solve the problem of high preparation cost of platinum counter electrode, achieve strong electrochemical reversibility, simple preparation process, stable electrical Effects of chemical properties

Inactive Publication Date: 2010-01-20
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • 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

[0019] Specific Embodiment 1: In this embodiment, the composite film counter electrode used for dye-sensitized solar cells is sequentially formed from the conductive substrate (1), the manganese dioxide film (2) and the conductive polymer film (3) through intermolecular interaction from bottom to top. It is connected under the joint action of force and interatomic force.

[0020] 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 force between adjacent layers, long service life, good stability, good catalytic performance, high conductivity, and controllable size. The photoelectric conversion efficiency of the dye-sensitized solar cell based on the composite film counter electrode used in the dye-sensitized solar cell of the present embodiment rea...

specific Embodiment approach 2

[0021] Embodiment 2: This embodiment differs from Embodiment 1 in that the thickness of the manganese dioxide film (2) is 6-10 μm, and the thickness of the conductive polymer film (3) is 2-4 μm. Other parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0022] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the conductive substrate (1) is selected from conductive glass, stainless steel metal sheets or insulating materials coated with conductive metal films. Other parameters are the same as those in Embodiment 1 or Embodiment 2.

[0023] 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 manganese dioxide membrane and a conductive polymer membrane. The preparation method of the invention comprises the following steps: first preparing electrophoretic liquid of the manganese dioxide and then electrophoretically depositing the manganese dioxide membrane on the conductive substrate; preparing electrodeposition liquid of a conductive polymer and depositing the conductive polymer membrane on the manganese dioxide membrane by cyclic voltammetry to obtain the composite membrane counter electrode used for DSSC. The composite membrane counter electrode of the invention has good catalytic performance and low preparation cost. The photoelectric conversion efficiency of the DSSC based on the composite membrane counter electrode of the invention reaches 3.85%, 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 MnO 2 / Conductive polymer composite membrane counter electrode and 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 acce...

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
CPCY02E10/542Y02E10/549
Inventor 牛海军罗俊崔建伟
Owner HEILONGJIANG UNIV
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