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Nickel black-graphene composite photothermal conversion film and preparation method thereof

A graphene composite, photothermal conversion technology, applied in graphene, chemical instruments and methods, optics, etc., can solve the problems of high cost and limited wide application, and achieve the effect of simple preparation process and wide light absorption wavelength range.

Active Publication Date: 2021-12-10
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, precious metals such as gold and silver have been widely studied, but their high cost severely limits their wide application.

Method used

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  • Nickel black-graphene composite photothermal conversion film and preparation method thereof
  • Nickel black-graphene composite photothermal conversion film and preparation method thereof
  • Nickel black-graphene composite photothermal conversion film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 1.32g of ammonium sulfate and 0.42g of nickel sulfate to 200ml of deionized water, and keep stirring at room temperature until fully dissolved to form an electrolyte solution; connect the foamed nickel to the cathode and the graphite foil to the anode, and connect the connected Adjust the electrode distance and put it into the electrolyte; turn on the switch of the external DC power supply, and react at 13V for 10 minutes; wash the plated nickel black-graphene light-to-heat conversion film in deionized water, take it out and bake it in an oven at 60°C Let dry for 12 hours. Placed on the evaporation cup under the light of 1 sun, the light-vapor energy conversion efficiency is 136.94%, and the vapor permeability is 2.00 kg / m 2 h.

Embodiment 2

[0033] Add 1.32g of ammonium sulfate and 0.42g of nickel sulfate to 200ml of deionized water, and keep stirring at room temperature until fully dissolved to form an electrolyte solution; connect the foamed nickel to the cathode and the graphite foil to the anode, and connect the connected Adjust the electrode distance and put it into the electrolyte; turn on the switch of the external DC power supply, and react at 13V for 20 minutes; wash the plated nickel black-graphene photothermal conversion film in deionized water, take it out and bake it in an oven at 60°C Let dry for 12 hours. Placed on the evaporation cup under the light of 1 sun, the light-vapor energy conversion efficiency is 138.49%, and the vapor permeability is 2.02 kg / m 2 h.

Embodiment 3

[0035] Add 1.32g of ammonium sulfate and 0.42g of nickel sulfate to 200ml of deionized water, and keep stirring at room temperature until fully dissolved to form an electrolyte solution; connect the foamed nickel to the cathode and the graphite foil to the anode, and connect the connected Adjust the distance between the electrodes and put them into the electrolyte; turn on the switch of the external DC power supply, and react at 13V for 30 minutes; wash the plated nickel black-graphene light-to-heat conversion film in deionized water, take it out and bake it in an oven at 60°C Let dry for 12 hours. Placed on the evaporation cup under the light of 1 sun, the light-steam energy conversion efficiency is 162.48%, and the vapor permeability is 2.37 kg / m 2 h.

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Abstract

The invention discloses a nickel black-graphene composite photothermal conversion film and a preparation method thereof, and relates to a structure, preparation and seawater desalination application of the nickel black-graphene composite photothermal conversion film. Graphene and nickel black are deposited on the hole wall surface of foamed nickel at the same time by adopting a one-step electrochemical method, and the nickel black-graphene composite photo-thermal conversion film is obtained. In cooperation with the plasma resonance effect of the metal nickel black and the advantage of wide light absorption wavelength range of the graphene carbon material, the photo-thermal conversion efficiency is improved. The nickel black-graphene photothermal conversion film is used for seawater desalination under the illumination condition. Under the illumination intensity of 1 sun, the light-steam energy conversion efficiency reaches 162.4%, and the steam permeability can reach 2.37 kg / m < 2 >. H.

Description

technical field [0001] The invention belongs to the field of photothermal conversion and its application in seawater desalination. Background technique [0002] Fresh water is an indispensable resource for human survival. Therefore, more and more countries adopt seawater desalination technology to alleviate the shortage of fresh water. However, high energy consumption is required in the desalination process. Solar energy, as an energy necessary for the survival of organisms, is ubiquitous and inexhaustible in life. People often think that the introduction of solar energy into seawater desalination technology has the effect of light-to-heat conversion and can effectively reduce energy consumption. By combining the two most abundant resources on the earth, seawater desalination can solve the problem of water shortage and achieve sustainable development, which is the general trend of seawater desalination technology in the future. At present, the commonly used solar thermal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/19C25C1/08C25C7/02C25C7/06C02F1/44
CPCC01B32/19C25C1/08C25C7/02C25C7/06C02F1/447Y02A20/131Y02P20/10Y02A20/124Y02A20/212Y02A20/142
Inventor 孙德岳东敏刘美玲于静彤
Owner CHANGCHUN UNIV OF TECH
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