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Preparation method of cerium-doped copper sulfide quantum dot nanomaterial

A nanomaterial, copper sulfide technology, applied in copper sulfide, nanotechnology, hybrid capacitor electrodes, etc., can solve problems such as difficult to achieve doping, and achieve the effects of easy satisfaction of experimental conditions, good repeatability, and simple and low-cost experimental equipment.

Inactive Publication Date: 2019-04-09
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above experimental methods are difficult to use simple experimental devices to synthesize nano-scale materials with high specific capacitance, and it is not easy to achieve the controllability of doping

Method used

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  • Preparation method of cerium-doped copper sulfide quantum dot nanomaterial
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  • Preparation method of cerium-doped copper sulfide quantum dot nanomaterial

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1 Experimental device of the present invention

[0024] The present invention adopts gas and liquid chemical reaction experimental device to prepare quantum dot supercapacitor nano material, experimental device such as figure 1 shown.

[0025] figure 1 Mainly divided into upper part preparation H 2 There are three parts: the device for S reaction gas, the device for reacting and collecting reaction products in the middle part, and the tail gas absorption device in the lower right part. Upper preparation reaction gas H 2 The device of S is mainly composed of an infusion bottle, a catheter with a regulator, and a three-necked flask. The regulator on the catheter can control the dripping speed of the sodium sulfide solution in the infusion bottle, so that the sodium sulfide solution is dripped into the three-necked flask containing the hydrochloric acid solution (the dripping speed of the sodium sulfide solution is 15-25 drops / minute). Experimentally prepar...

Embodiment 2

[0027]Configuration of the solution to be reacted: cerium acetate is used as a cerium source, and deionized water is added to configure a cerium acetate deionized aqueous solution with a cerium ion concentration of 20mmol / L; copper acetate is used as a copper source, and deionized water is added to configure a copper ion concentration of 10mmol / L Copper acetate deionized aqueous solution; polyvinylpyrrolidone is used as a dispersant, and deionized water is added to prepare a polyvinylpyrrolidone solution with a concentration of 240mmol / L. Use a burette to drop 200ml of copper acetate deionized water solution, 4ml of cerium acetate deionized water solution, and 186ml of deionized water into the beaker equipped with a stirrer. The solution in the beaker needs to be stirred while titrating, and the length of the stirrer in the beaker is 2cm. The volume of the beaker is 500ml. Place the beaker containing the mixed solution of copper ions and cerium ions on a magnetic stirrer and s...

Embodiment 3

[0031] Configuration of the solution to be reacted: first prepare the same deionized aqueous solution of cerium acetate, copper acetate and polyvinylpyrrolidone solution as in Example 2. Use a burette to drop 200ml of copper acetate deionized aqueous solution, 6ml of cerium acetate deionized aqueous solution, and 184ml of deionized water into the beaker, wherein a clean stirring bar with a length of 2cm is placed in the beaker in advance, and the volume of the beaker is 500ml. The solution needs to be stirred while titrating. Place the beaker containing the mixed solution of copper ions and cerium ions on a magnetic stirrer and stir for 60 minutes, and slowly drop 10ml of polyvinylpyrrolidone solution into the beaker under stirring with a burette. After the 400ml of the reaction solution in the beaker is mixed evenly, the pH value is adjusted with sodium hydroxide solution, so that the pH value of the reaction solution is between 7.0-7.5, and then the reaction solution is pour...

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Abstract

The invention relates to a preparation method of a cerium-doped copper sulphide quantum dot nanometer material, and belongs to the technical field of preparation of quantum dot materials. The preparation method comprises the following steps of preparing to-be-reacted solution, preparing the cerium-doped copper sulphide material by gas and liquid chemical reaction, purifying of the product and the like. The preparation method has the characteristics that the cost is low, the experiment device is simple, the operation is simple, and the like. The prepared cerium-doped copper sulphide quantum dot nanometer material has the advantages that the specific capacitance is higher; the cerium-doped copper sulphide quantum dot nanometer material can be used for preparing supercapacitor electrodes; the important value is realized in studying of energy storage equipment; the repeatability of the prepared sample is good; the cerium-doped copper sulphide quantum dot nanometer material is suitable for industrial large-scale production.

Description

technical field [0001] The invention belongs to the technical field of quantum dot nano material preparation. Inorganic synthesis of cerium-doped copper sulfide (CuS:Ce 3+ ) method for quantum dot supercapacitor nanomaterials. Background technique [0002] A supercapacitor is an energy storage device with high power, high energy density, long cycle life, and fast charge / discharge rate. As an important energy storage device, supercapacitors have a wide range of applications in mobile electronic devices, hybrid electric vehicles, aerospace, information technology and other fields. The performance of supercapacitors is mainly affected by the properties and structure of the electrode materials. The energy stored in a supercapacitor is either an electric double layer capacitor, a pseudocapacitor, or both. Pseudocapacitors tend to have higher specific capacity than electric double layer capacitors, and the charge storage mechanism of pseudocapacitors mainly relies on the redox...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G3/12B82Y40/00H01G11/30
CPCY02E60/13
Inventor 张明喆揣明艳
Owner JILIN UNIV
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