Nickel oxide nano hierarchical structure electrochromic capacitance material and preparation method thereof

A technology of nickel oxide nanosheets and hierarchical structure, which is applied in the direction of color-changing fluorescent materials, chemical instruments and methods, nano optics, etc., can solve the problems of unfavorable industrial production, time-consuming and labor-intensive, and many control factors, so as to improve coloring efficiency and enhance Effect of chemical adsorption and large reaction area

Pending Publication Date: 2022-07-29
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the current methods for preparing hierarchical structures are "multi-step methods", that is, first-level nanostructures are prepared, and then new methods or reactants are used to prepare secondary structures. This type of method is not only time-consuming and laborious, but also requires control. There are too many factors, which is not conducive to large-scale industrial production

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  • Nickel oxide nano hierarchical structure electrochromic capacitance material and preparation method thereof
  • Nickel oxide nano hierarchical structure electrochromic capacitance material and preparation method thereof
  • Nickel oxide nano hierarchical structure electrochromic capacitance material and preparation method thereof

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Embodiment 1

[0043] A method for preparing a nickel oxide nanoscale hierarchical structure electrochromic capacitor material, the specific steps are as follows:

[0044] (1) The FTO conductive glass was placed in a beaker containing acetone, ethanol and deionized water in turn and ultrasonicated for 10min respectively, then placed on the filter paper and baked with an infrared lamp, and then placed in a UV light cleaning machine for 30min. .

[0045] (2) Preparation of seed layer: 1.5 mmol of nickel acetate tetrahydrate was placed in 100 mL of ethanol for magnetic stirring for 10 min, and the stirring speed was 800 r / min, and then the nickel acetate solution was placed in an ultrasonicator for ultrasonic dispersion for 10 min. Then, into the prepared 15mol / L nickel acetate ethanol solution, add the FTO conductive glass treated in step (1), heat up to 60°, and take a water bath for 45min. Then, it was washed with deionized water and dried at a drying temperature of 60 °C and a drying time ...

Embodiment 2

[0051] A method for preparing a nickel oxide nanoscale hierarchical structure electrochromic capacitor material, the specific steps are as follows:

[0052] (1) The FTO conductive glass was placed in a beaker containing acetone, ethanol and deionized water in turn and ultrasonicated for 10min respectively, then placed on the filter paper and baked with an infrared lamp, and then placed in a UV light cleaning machine for 30min. .

[0053] (2) Preparation of seed layer: 1.5 mmol of nickel acetate tetrahydrate was placed in 100 mL of ethanol for magnetic stirring for 10 min, and the stirring speed was 800 r / min, and then the nickel acetate solution was placed in an ultrasonicator for ultrasonic dispersion for 10 min. Then, the FTO conductive glass treated in step (1) was added to the prepared 15 mol / L nickel acetate ethanol solution, the temperature was raised to 60° C., and the water bath was carried out for 45 min. Then, it was washed with deionized water and dried at a drying...

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Abstract

The invention discloses a nickel oxide nano hierarchical structure electrochromic capacitance material and a preparation method thereof, the electrochromic material has a porous ultrathin nanosheet nanowire hierarchical structure, the average thickness of nanosheets is 10-20 nm, and the average diameter of nanowires is 5-7 nm. According to the invention, a one-step hydrothermal method is utilized to directly grow a porous ultrathin nanosheet nanowire hierarchical array on the surface of FTO conductive glass, so that the electrochromic capacitance material is prepared. According to the invention, the nickel oxide nanosheets are uniformly grown and distributed, the superfine nanowires are rooted on the surface of the nanosheet array, and the material has excellent visible light/infrared dual-band electrochromic performance, can realize rapid reversible conversion between transparency and black brown under different voltages, has excellent capacitive performance and shows a dual-function characteristic. The nickel oxide film with the nanoscale hierarchical structure can be used for novel intelligent display materials and intelligent color-changing energy storage materials such as electrochromic intelligent windows and mobile phone back shells.

Description

technical field [0001] The invention relates to the field of electrochromic capacitor dual-function films, in particular to a nickel oxide nanometer hierarchical structure electrochromic capacitor material and a preparation method thereof. Background technique [0002] Electrochromic phenomenon refers to the phenomenon that the color of a material changes reversibly under an external electric field. Due to the huge application prospects of electrochromic materials in stealth materials, smart color-changing films and other fields, people have paid more and more attention in recent years. At the same time, since the charge insertion / extraction of the redox reaction in the electrochromic reaction is similar to the energy storage mechanism of the capacitor material, the preparation of the electrochromic capacitor material with bifunctional characteristics is also a major direction of electrochromic energy storage. Highlights. [0003] Transition metal oxides are the most widel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1524C09K9/00B82Y20/00B82Y40/00
CPCG02F1/1524C09K9/00B82Y20/00B82Y40/00
Inventor 张勇姚尚智吴玉程蔡婧怡张雪茹崔接武舒霞王岩秦永强
Owner HEFEI UNIV OF TECH
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