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Preparation method of dye-sensitized solar cell photoanode

A solar cell and dye sensitization technology, which is applied in the field of photoanode preparation, can solve the problems of no obvious improvement in composite electrode performance, inability to fully utilize graphene, uneven mixing, etc., and achieve good thermal conductivity and mechanical properties, photoelectricity, etc. Reduced conversion efficiency and simple preparation method

Inactive Publication Date: 2015-07-15
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the course of the research, it was found that graphene is prone to clustering, uneven mixing, and the excellent performance of graphene cannot be fully utilized, resulting in no significant improvement in the performance of the composite electrode.

Method used

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  • Preparation method of dye-sensitized solar cell photoanode
  • Preparation method of dye-sensitized solar cell photoanode

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The multilayer graphene obtained by the graphite chemical oxidation method was dissolved in water, and ultrasonically treated until it was completely dissolved, and the concentration of the graphene solution was 10.5 mg / ml. ZnO nanoparticles, MnO 2 Nanomaterials and graphene solutions according to ZnO nanoparticles, MnO 2 The mass percentages of nanomaterials and graphene were 40%, 20%, and 40%, respectively, mixed uniformly, and ultrasonically dispersed. Spin-coat the obtained mixed material on the surface of the polyester polymer substrate, place it at room temperature for 48 hours, and obtain a composite film of multilayer graphene after drying. The composite film of multilayer graphene obtained by spin-coating on the surface of polyester polymer substrate is reduced by pure hydrazine solution to obtain a composite photoanode based on multilayer graphene. Using the above-mentioned composite photoanode, the photoelectric conversion efficiency of the dye-sensitized s...

Embodiment 2

[0024] The single-layer graphene obtained by the graphite organic functionalization method was dissolved in acetone, and ultrasonically treated until it was completely dissolved, and the concentration of the graphene solution was 28 mg / ml. Will Nb 2 o 5 Nanoparticles, MnO 2 Nanomaterials and graphene solutions according to Nb 2 o 5 Nanoparticles, MnO 2 The mass percentages of nanomaterials and graphene were 83%, 15%, and 2%, respectively, mixed uniformly, and ultrasonically dispersed. The obtained mixed material is sprayed on the surface of the metal substrate, placed at room temperature for 60 hours, and a composite film of single-layer graphene is obtained after drying. The composite film of single-layer graphene obtained by spraying on the surface of the metal substrate is baked at 650° C. under the protection of nitrogen or argon to obtain a composite photoanode based on single-layer graphene. Using the above composite photoanode, the photoelectric conversion efficie...

Embodiment 3

[0026] The multi-layer graphene obtained by the graphite organic functionalization method was dissolved in N, N-dimethylformamide DMF, and ultrasonically treated until it was completely dissolved, and the concentration of the graphene solution was 20 mg / ml. Will Al 2 o 3 Nanoparticles, MnO 2 Nanomaterials and graphene solutions according to Al 2 o 3 Nanoparticles, MnO 2 The mass percentages of nanomaterials and graphene were 70%, 18%, and 12%, respectively, mixed uniformly, and ultrasonically dispersed. The obtained mixed material is sprayed on the surface of the transparent conductive glass substrate, placed at room temperature for 72 hours, and a composite film of multilayer graphene is obtained after drying. The composite film of multilayer graphene obtained by spraying on the surface of a transparent conductive glass substrate is baked at 800° C. under the protection of nitrogen or argon to obtain a composite photoanode based on multilayer graphene. Using the above c...

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Abstract

The invention discloses a preparation method of a dye-sensitized solar cell photoanode, and relates to preparation of electrode material. The photoanode is prepared by evenly mixing and coating inorganic nanoparticles, manganese dioxide nanometer material and graphene onto the surface of substrate material, wherein the inorganic nanoparticles, the manganese dioxide nanometer material and the graphene respectively account for 40-83%, 15-20% and 2-40% of the total mass. The photoanode prepared by the preparation method has good electrical conductivity as well as good thermal conductivity and mechanical property, is very low in production cost, simple in preparation method, low in price and light in weight, has solution handlability, can be well molded and processed, does not need a large complicated instrument, and can be used for preparing samples with various sizes and shapes; furthermore, the method gives the best range to the mixing proportion of the inorganic nanoparticles, the manganese dioxide nanometer material and the graphene; and the photoanode with the best performance can be obtained within the value range provided by the invention, so that the dye-sensitized solar cell photoanode with high photoelectric conversion efficiency can be obtained under the same experiment condition.

Description

technical field [0001] The invention relates to a method for preparing a photoanode of a dye-sensitized solar cell, and belongs to the technical field of electrode material preparation. Background technique [0002] While society is developing at a high speed, human beings are facing unprecedented energy crisis and environmental pollution. The use of renewable energy has become the only way for human sustainable development. As a non-polluting and clean energy device, solar cells are highly valued by governments all over the world. At present, silicon-based solar cells are mainly used widely, but their prices are very expensive. Dye-sensitized solar cells have the advantages of low cost, high stability, environmental friendliness, and can be fabricated into flexible cells. They are the most promising new solar cells to replace traditional silicon-based photovoltaic cells. [0003] The traditional method of preparing DSSC photoanode is to use nano-TiO 2 Add surfactants to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20H01G9/042
CPCY02E10/542
Inventor 徐征赵谡玲徐叙瑢
Owner BEIJING JIAOTONG UNIV