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Cu3SnS4 nano-material counter electrode for dye-sensitized solar cell and preparing method thereof

A technology for solar cells and dye sensitization, applied in the fields of nanomaterials and solar cells, can solve the problems of reduced cell efficiency, unfavorable industrialized production of dye-sensitized solar cells, high price, etc. Mature, strong anti-corrosion effect

Inactive Publication Date: 2014-04-09
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the platinum counter electrode will be eroded by the electrolyte during long-term work, resulting in a decrease in battery efficiency.
At the same time, as a precious metal material, platinum is not conducive to the industrial production of dye-sensitized solar cells because of its high price.

Method used

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  • Cu3SnS4 nano-material counter electrode for dye-sensitized solar cell and preparing method thereof
  • Cu3SnS4 nano-material counter electrode for dye-sensitized solar cell and preparing method thereof
  • Cu3SnS4 nano-material counter electrode for dye-sensitized solar cell and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1 2

[0026] Example 1 Titanium dioxide nanoporous membrane-based Cu 3 SnS 4 Dye-sensitized solar cells with counter electrode

[0027] The specific steps of the preparation method of the new structure of the dye-sensitized solar cell in this embodiment are as follows:

[0028] (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 conductive glass into acetone, isopropanol, deionized water (volume ratio v 1 : v 2 : v 3 =1:1:1) in a mixed solution of ultrasonic cleaning for 30min, and blow dry 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.

[0029] (2) Counter electrode preparation: Cu 3 SnS 4 Nanoparticles were dissolved in deionized wat...

Embodiment 2 2

[0034] Example 2 Titanium dioxide nanotube-based Cu 3 SnS 4 Dye-sensitized solar cells with counter electrode

[0035] The specific steps of the preparation method of the new structure of the dye-sensitized solar cell in this embodiment are as follows:

[0036] (1) Preparation of titanium dioxide nanotubes: A piece of titanium foil (0.25 mm, 99.6%) was soaked in acetone, isopropanol, and deionized water, ultrasonically cleaned for 15 min, and dried with nitrogen. The titanium foil and the platinum counter electrode 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 a constant voltage of 60V, and 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 nano-material counter electrode for a dye-sensitized solar cell and a preparing method thereof. The preparing method includes the first step of compounding Cu3SnS4 nano-particles with diameters ranging from 200 nanometers to 300 namometers in a hot solvent method, the second step of dissolving the Cu3SnS4 nano-particles in deionized water and forming 'ink' through ultrasonic processing, the third step of coating a conductive substrate with the black 'ink', then, carrying out annealing for 0.5-2h at the temperature from 450 DEG C to 550 DEG C, and finally the mesoporous Cu3SnS4 counter electrode can be obtained. According to the method, mesoporous Cu3SnS4 with good corrosion resistance is adopted as the counter electrode of the dye-sensitized solar cell, the specific area is large, catalytic performance is good and production cost is low. The photoelectric conversion efficiency of the cell prepared through the method is equal to that of a cell based on a traditional Pt electrode, and the method is suitable for being applied in the dye-sensitized solar cell and beneficial for industrialization development of the dye-sensitized solar cell.

Description

technical field [0001] The present invention relates to a kind of nanometer material and solar cell, especially a kind of Cu for dye-sensitized solar cell 3 SnS 4 Nanomaterial counter electrode and preparation method thereof. Background technique [0002] The two major social problems of energy crisis and environmental pollution are becoming more and more serious. The existing energy structure is dominated by non-renewable fossil energy. The irrational energy structure restricts the development of social economy. It is imperative to transform the energy structure and develop environmentally friendly renewable resources. Abundant and clean solar energy is expected to alleviate and solve this problem, so it has attracted widespread attention, and the direct conversion of solar energy into electrical energy is one of the important research directions. A solar cell is a device that directly converts light energy into electrical energy through the photoelectric effect or photo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/20B82Y30/00
CPCY02E10/542
Inventor 强颖怀朱磊赵宇龙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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