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A kind of cu for photoelectrochemical solar cell 3 sns 4 /cu 2 snse 3 Composite photocathode and preparation method thereof

A solar cell and photoelectrochemical technology, applied in the fields of nanomaterials and solar cells, can solve problems such as unsatisfactory conversion efficiency, and achieve the effects of simple manufacturing process, simple and safe preparation process, and low preparation cost

Inactive Publication Date: 2016-08-31
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the commonly used nickel oxide photocathode matches the energy band of the titanium dioxide photoanode, the conversion efficiency has been unsatisfactory, and there is still a big gap with the efficiency of traditional photoelectrochemical solar cells.

Method used

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  • A kind of cu for photoelectrochemical solar cell <sub>3</sub> sns <sub>4</sub> /cu <sub>2</sub> snse <sub>3</sub> Composite photocathode and preparation method thereof
  • A kind of cu for photoelectrochemical solar cell <sub>3</sub> sns <sub>4</sub> /cu <sub>2</sub> snse <sub>3</sub> Composite photocathode and preparation method thereof
  • A kind of cu for photoelectrochemical solar cell <sub>3</sub> sns <sub>4</sub> /cu <sub>2</sub> snse <sub>3</sub> Composite photocathode and preparation method thereof

Examples

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Effect test

Embodiment 1

[0028] Example 1 TiO2 Nanoporous Membrane-based Cu3SnS4 / Cu2SnSe3 Composite Photocathode Photoelectrochemistry

[0029] Solar battery

[0030] The concrete steps of the preparation method of the photoelectrochemical solar cell new structure of embodiment are as follows:

[0031] (1) Photoanode preparation: take a piece of conductive glass (FTO), and cut it into glass pieces of the required size with a glass knife. Put the conductive glass into a mixed solution of acetone, isopropanol, and deionized water (volume ratio v1:v2:v3=1:1:1), ultrasonically clean it for 30 minutes, and dry it with nitrogen. A titanium dioxide porous film was coated on the conductive surface by spin coating, and annealed at 450 °C for 1 h. The photoanode can be prepared by immersing the sample in 3mM di-tetrabutylammonium-bis(isothiocyano)bis(2,2'-bipyridyl-4,4'-dicarboxy)ruthenium (N719) solution for 24h.

[0032] Preparation of composite photocathode: Dissolve Cu3SnS4 nanoparticles in deionized wat...

Embodiment 2

[0037] Example 2 Titanium dioxide nanotube based Cu3SnS4 / Cu2SnSe3 photocathode photoelectrochemical solar cell

[0038] The specific steps of the preparation method of the photoelectrochemical solar cell new structure of the present embodiment are as follows:

[0039] (1) Preparation of titanium dioxide nanotubes: Take a piece of titanium foil (0.25 mm, 99.6%), soak it in acetone, isopropanol, and deionized water, ultrasonically clean it for 15 minutes, and dry it with nitrogen. The titanium foil and the platinum photocathode were placed in parallel in a two-electrode system for anodic oxidation reaction, in which the electrolyte was ethylene glycol containing 2vol% deionized water and 0.25wt% ammonium fluoride, the input voltage was 60V constant voltage, anodized for 3h The final sample was rinsed and dried with nitrogen, placed in a muffle furnace for annealing at 450°C for 1 hour, and the sample was taken out for the second anodic oxidation for 1 hour (other conditions were...

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Abstract

The invention relates to a Cu3SnS4 / Cu2SnSe3 composite photocathode for a photoelectrochemical solar cell and a preparation method thereof. The preparation method comprises the following steps: (1) using a hot solvent method to synthesize Cu3SnS4 nanoparticles with a diameter ranging from 200 to 300 nanometers and a diameter range Cu2SnSe3 nanoparticles at 250-350 nm; (2) Cu3SnS4 and Cu2SnSe3 nanoparticles were mechanically stirred and ultrasonically treated, and dissolved in deionized water to form "ink" by ultrasonic treatment; (3) Black "ink" was painted covered on the conductive substrate, and then annealed at 450-550°C for 0.5-1h to obtain a mesoporous Cu3SnS4 / Cu2SnSe3 composite photocathode. The method adopts mesoporous Cu3SnS4 / Cu2SnSe3 with good corrosion resistance as the photocathode of the photoelectrochemical solar cell, which has a large specific surface area, good catalytic and conductive properties, and low production cost; the photoelectric conversion efficiency of the cell prepared by this method can be compared with Batteries based on traditional Pt counter electrodes are comparable and suitable for industrial production of photoelectrochemical solar cells.

Description

[0001] Cu3SnS4 / Cu2SnSe3 composite photocathode for photoelectrochemical solar cell and preparation method thereof technical field [0002] The invention relates to a nanometer material and a solar cell, in particular to a Cu3SnS4 / Cu2SnSe3 composite photocathode for a photoelectrochemical solar cell and a preparation method thereof. Background technique [0003] Mineral energy such as coal, oil and natural gas is increasingly scarce and non-renewable, and the energy structure needs to be adjusted urgently. At the same time, problems such as air pollution and environmental damage caused by the use of mineral energy are becoming more and more serious. It is imminent to find other energy sources to replace fossil energy sources. Clean, pollution-free and inexhaustible solar energy has received more and more attention. Electric energy transmission is safe and economical, and production and use are convenient. Converting solar energy directly into electrical energy is one of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/042H01G9/20
Inventor 赵宇龙朱磊强颖怀顾修全顾永琴宋端鸣宋昌斌王波朱建晶
Owner CHINA UNIV OF MINING & TECH
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