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Method for preparing sulfide composite nano film

A nano-film, sulfide technology, applied in chemical instruments and methods, copper sulfide, nickel sulfide, etc., can solve the problems of limited material structure and performance selection, and achieve uniform and stable electrical performance, high repeatability, and morphology. the effect of the rule

Inactive Publication Date: 2018-07-20
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the current electronic devices are limited by the choice of material structure and performance, and there are various limitations and defects.

Method used

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  • Method for preparing sulfide composite nano film
  • Method for preparing sulfide composite nano film
  • Method for preparing sulfide composite nano film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1) Preparation of Co 9 S 8 nanoneedle array

[0039] Prepare 60mL reaction aqueous solution, this solution contains 6.25wt% Urea (urea), 0.15M Co(Cl) 2 ·6H 2 O (cobaltous chloride hexahydrate), the carbon cloth cleaned in step 1) was ultrasonicated for 30 minutes in the above reaction aqueous solution to make its surface fully contact with the solution, and then placed in a 100mL reaction kettle containing the above reaction solution, at 90°C Under the conditions of reaction for 3 h, cooled to room temperature, a light pink film was obtained on the surface of the carbon cloth, the sample was rinsed with deionized water, and after drying, the Co 9 S 8 Hydrates of Nanoneedle Arrays.

[0040] Prepare 60mL of 0.01M aqueous solution of sodium sulfide nonahydrate, the Co obtained above 9 S 8 The hydrate of the nanoneedle array was placed in a 100mL reaction kettle containing a reaction aqueous solution, reacted at 180°C for 10h, cooled to room temperature, and a black fi...

Embodiment 2

[0045] Repeat the 1) step of embodiment 1, prepare 60mL reaction aqueous solution, this aqueous solution contains the thiourea of ​​0.01M copper nitrate trihydrate and 0.05M, the above-mentioned long have Co 9 S 8 Put the carbon cloth with nanoneedle structure into a 100mL reaction kettle containing the above-mentioned reaction solution, and react at 150°C for 2 hours. After the reaction, cool to room temperature to obtain a black film with a darker color than the sample in Example 1, rinse with deionized water Samples were dried to obtain CuS nanosheets modified Co 9 S 8 Nano needle-like three-dimensional composite structure. Such as Figure 5 , 6 As shown, it can be seen that the CuS nanosheets are uniformly distributed on the Co 9 S 8 Around the array, its length is about 300nm. Such as Figure 7 As shown, further XRD characterization can also see that the diffraction peaks of the sample match the standard PDF card of CuS.

[0046] Repeat the 2) step of embodiment ...

Embodiment 3

[0048] Repeat the 1) step of embodiment 1, prepare 60mL reaction aqueous solution, this aqueous solution contains the thiourea of ​​25mg sodium molybdate dihydrate and 50mg, the above-mentioned long have Co 9 S 8 Put the carbon cloth with nanoneedle structure into a 100mL reaction kettle containing the above-mentioned reaction solution, and react at 200°C for 24 hours. After the reaction, cool to room temperature to obtain a black film with a darker color than the sample in Example 1. Rinse with deionized water sample, dried to get MoS 2 Nanosheet-modified Co 9 S 8 Nano needle-like three-dimensional composite structure. Such as Figure 10 and 11 As shown, MoS 2 The nanosheets are uniformly distributed on the Co 9 S 8 Around the array, its length is about 50nm. Such as Figure 12 As shown, further XRD characterization can also see that the diffraction peaks of the sample are consistent with those of MoS 2 The standard PDF card matches.

[0049] Repeat the 2) step of...

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Abstract

The invention relates to a composite material for a capacitor, especially to a method for preparing a sulfide composite nano film. A Co9S8 nano-needle array is prepared; a Co9S8-CuS three-dimensionalnano composite structure is prepared; a Co9S8-MoS2 three-dimensional nano composite structure is prepared; and a Co9S8-NiS2 three-dimensional nano composite structure is prepared. Matching of metal salt and thiourea with different concentrations and proportions is carried out; the reaction time and temperature are controlled by using a simple hydrothermal synthesis method; the three-dimensional nano composite structures of Co9S8-CuS and the like are prepared on carbon cloth; and thus a three-dimensional composite structure of a Co9S8 nano-needle array coated with several kinds of metal sulfidenano structures is prepared. The structure having a regular shape, a large specific surface area, and uniform and stable electrical performance can be applied to a super capacitor as a working electrode material and the excellent electrical performance is presented. The method has advantages of high repeatability and simple operation can be produced in large scale.

Description

technical field [0001] The invention relates to a composite material for capacitors, in particular to a preparation method of a sulfide composite nano film. Background technique [0002] Supercapacitor is a new type of energy storage device, which has the advantages of good cycle stability, high power density, and wide applicable temperature range. However, the low energy density of the low-dimensional material electrodes currently used limits its application. For the performance of supercapacitors, the synthesis and design of three-dimensional materials are crucial. [0003] Transition metal sulfides have a 3d valence electron shell structure, a variety of crystal structures, and excellent physical and chemical properties. (Pranav Kulkarni, S.K.Nataraj, R.Geetha Balakrishna, D.H.Nagaraju and M.V.Reddy. Nanostructured binary and ternary metal sulfates: synthesis methods and their application in energy conversion and storage devices. J. Mater. Chem. A, 2017, 5–2204 22094.) ...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/30B82Y30/00B82Y40/00C01G51/00C01G53/11C01G39/06C01G3/12
CPCY02E60/13H01G11/24B82Y30/00B82Y40/00C01G3/12C01G39/06C01G51/30C01G53/11C01P2004/10C01P2004/20C01P2004/84C01P2006/40H01G11/30
Inventor 叶美丹刘群洪晓丹张鑫贺春锋刘向阳
Owner XIAMEN UNIV
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