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A kind of nickel sulfide/graphene composite thin film and its preparation method and application

A technology of graphene composite and graphene film, which is applied in the direction of photosensitive equipment, electrolytic capacitors, capacitors, etc., can solve the problems of poor conductivity and restricted catalytic performance of transition metal sulfides, and achieve low production cost, excellent catalytic performance, and phase uniform effect

Active Publication Date: 2021-10-19
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the poor conductivity of transition metal sulfides restricts their catalytic performance.

Method used

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  • A kind of nickel sulfide/graphene composite thin film and its preparation method and application
  • A kind of nickel sulfide/graphene composite thin film and its preparation method and application
  • A kind of nickel sulfide/graphene composite thin film and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Cleaning of FTO conductive glass: place the FTO glass in a beaker with a cleaning rack, and use acetone, absolute ethanol, and deionized water to clean it ultrasonically for 15 minutes. After cleaning, take out the FTO glass with clean tweezers and blow it with nitrogen. Dry;

[0033] 2. Prepare graphene slurry: first dissolve 0.9g of ethyl cellulose in 8.1g of absolute ethanol, stir well, then add 9.6g of terpineol and 9.2g of absolute ethanol in sequence, and stir thoroughly. Then slowly add 0.1 g of graphene after ball milling while stirring. Then carry out magnetic stirring and ultrasonic dispersion for 20 minutes each, and alternately cycle 3-5 times. Next, stir in a constant temperature water bath at 50°C until absolute ethanol evaporates completely. Then add 0.6mL acetylacetone and 0.6mL OP emulsifier in turn, and stir well at room temperature to obtain graphene slurry.

[0034] 3. Print the paste in step 2 on the clean FTO conductive glass by screen printi...

Embodiment 2

[0043] 1. Cleaning of FTO conductive glass: place the FTO glass in a beaker with a cleaning rack, and use acetone, absolute ethanol, and deionized water to clean it ultrasonically for 15 minutes. After cleaning, take out the FTO glass with clean tweezers and blow it with nitrogen. Dry;

[0044] 2. Preparation of graphene oxide slurry: first dissolve 0.9g of ethyl cellulose in 8.1g of absolute ethanol, stir well, then add 9.6g of terpineol and 9.2g of absolute ethanol in sequence, and stir thoroughly. Then slowly add 0.1 g of graphene after ball milling while stirring. Then carry out magnetic stirring and ultrasonic dispersion for 20 minutes each, and alternately cycle 3-5 times. Next, stir in a constant temperature water bath at 50°C until absolute ethanol evaporates completely. Then add 0.6mL acetylacetone and 0.6mL OP emulsifier in turn, and stir well at room temperature to obtain graphene slurry.

[0045] 3. Print the paste in step 2 on the clean FTO conductive glass by ...

Embodiment 3

[0052] 1. Cleaning of FTO conductive glass: place the FTO glass in a beaker with a cleaning rack, and use acetone, absolute ethanol, and deionized water to clean it ultrasonically for 15 minutes. After cleaning, take out the FTO glass with clean tweezers and blow it with nitrogen. Dry;

[0053] 2. Prepare graphene slurry: first dissolve 0.9g of ethyl cellulose in 8.1g of absolute ethanol, stir well, then add 9.6g of terpineol and 9.2g of absolute ethanol in sequence, and stir thoroughly. Then slowly add 0.1 g of graphene after ball milling while stirring. Then carry out magnetic stirring and ultrasonic dispersion for 20 minutes each, and alternately cycle 3-5 times. Next, stir in a constant temperature water bath at 50°C until absolute ethanol evaporates completely. Then add 0.6mL acetylacetone and 0.6mL OP emulsifier in turn, and stir well at room temperature to obtain graphene slurry.

[0054] 3. Print the paste in step 2 on the clean FTO conductive glass by screen printi...

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Abstract

The invention belongs to the field of composite film materials, and discloses a nickel sulfide / graphene composite film, a preparation method and an application thereof. The composite film uses printing method to print graphene slurry on the surface of pretreated FTO conductive glass, heat treatment at 100-150°C, solidify at 100-150°C, and anneal at 300-400°C, and then the prepared The FTO glass with graphene film is vertically immersed in the precursor solution, and ammonia water is added under stirring to react at 15-20°C, the FTO glass is taken out and washed at 300-400°C for annealing, and then the prepared nickel oxide / graphene composite The film and the sodium sulfide solution are hydrothermally reacted at 70-100 DEG C, and after washing and drying, nickel sulfide is synthesized on the surface of the graphene film. The nickel sulfide / graphene composite thin film of the invention has uniform phase, high purity and excellent catalytic performance, and can be applied to a counter electrode of a dye-sensitized solar cell.

Description

technical field [0001] The invention belongs to the technical field of composite thin film materials, and more specifically relates to a nickel sulfide / graphene composite thin film and its preparation method and application. Background technique [0002] As one of the three pillars of the development of modern society, energy is an important material guarantee for the survival and development of human society, and a bottleneck restricting the country's economic development. With the further development of human society, the demand for energy continues to increase. The energy crisis and environmental pollution caused by this have become prominent contradictions in today's society, prompting humans to urgently search for and develop clean new energy. Among the new energy sources developed today, solar energy is inexhaustible, clean and pollution-free. Dye-sensitized solar cells (DSSCs) can directly convert solar energy into electrical energy, and have the advantages of high c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/20H01G9/042
CPCH01G9/20H01G9/2022Y02E10/542
Inventor 刘俊张魏魏魏爱香招瑜肖志明杨伟锋
Owner GUANGDONG UNIV OF TECH