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Preparation method of porous nanometer trinickel disulfide film electrode

A technology of nickel disulfide and thin film electrodes, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve problems such as restricting practical applications, unsatisfactory rate performance and cycle stability, and poor electrical conductivity. Achieve the effect of easy mass production, good rate performance and simple preparation method

Active Publication Date: 2017-05-17
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Pseudocapacitive electrode materials typically represented by metal oxides have very high specific capacitance, but due to poor electrical conductivity, the rate performance and cycle stability are not ideal, which restricts their practical application.

Method used

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  • Preparation method of porous nanometer trinickel disulfide film electrode
  • Preparation method of porous nanometer trinickel disulfide film electrode
  • Preparation method of porous nanometer trinickel disulfide film electrode

Examples

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preparation example Construction

[0022] The preparation method step of nickel disulfide electrode material of the present invention is:

[0023] (1) The nickel foam is ultrasonically cleaned with tap water, acetone, dilute hydrochloric acid and distilled water in sequence and dried. (2) Dissolve thiourea with a molar concentration of 10-50 mM in 100 ml of ethylene glycol, and obtain a uniform thiourea solution in ethylene glycol under magnetic stirring.

[0024] (3) Pack the solution obtained in step (2) into a 50ml polytetrafluoroethylene lining, then put the clean foam nickel obtained in step (1) into the polytetrafluoroethylene lining, and then put the lining into stainless steel The water heating kettle is put into a constant temperature drying oven at 80-200°C for drying.

[0025] (4) Take out the nickel foam, rinse the surface with deionized water and absolute ethanol in turn, and dry it under natural conditions to obtain a porous nano-nickel disulfide film electrode, which can be used as a supercapaci...

Embodiment 1

[0029] Weigh 2mmol of thiourea and dissolve it in 100mL of deethylene glycol, and dissolve it in nickel nitrate under magnetic stirring. Pour the solution into a 50mL polytetrafluoroethylene liner, put a piece of cleaned 3cm×5cm foam nickel into the polytetrafluoroethylene liner with the solution, seal it with a stainless steel jacket, and put it in a constant temperature of 180°C In the drying oven, keep warm for 7 hours. After the reaction kettle drops to room temperature, take out the nickel foam, rinse it repeatedly with deionized water and absolute ethanol in turn, and dry it in an oven to obtain a porous nano-nickel disulfide thin film electrode.

[0030] The phase, morphology and electrochemical properties of the obtained samples were analyzed, such as Figure 1-Figure 5 Shown:

[0031] figure 1 It is the XRD pattern of the obtained sample, and the XRD result shows that except the peak from the nickel foam substrate, the remaining peaks all come from Ni 3 S 2 (JCPDS...

Embodiment 2

[0035] Compared with Example 1, except that the time of vulcanization (1h) is different, all the other are the same as Example 1.

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Abstract

The present invention discloses a trinickel disulfide film electrode directly grown on a foam nickel substrate and a preparation method thereof. The foam nickel is used as the substrate and a nickel source, thiourea is used as a vulcanizing agent, and glycol is used as a solvent. The trinickel disulfide film electrode directly grown on a surface of the foam nickel is obtained through a simple solvent thermal method. The preparation method has the advantages of simple process and low costs, and is applicable to large-scale industrial production. The present invention further discloses application of the trinickel disulfide electrode. The trinickel disulfide film electrode has a porous nanometer structure, so that a material and an electrolyte can contact fully. The trinickel disulfide grows on the nickel source, that is, the foam nickel, and is firmly combined with the substrate, so that the electric charge can be transferred rapidly. The prepared trinickel disulfide has high rate performance and excellent circulation stability, and is an ideal super capacitor electrode material.

Description

technical field [0001] The invention relates to the field of supercapacitors, and specifically relates to a method for preparing a porous nano-nickel disulfide thin film electrode. Background technique [0002] As a new type of energy storage device, supercapacitors have the characteristics of short charging time, long service life, good temperature characteristics, energy saving and green environmental protection, and have broad applications in the fields of transportation, mobile communications, information technology, aerospace and national defense technology. application prospects. [0003] At present, the main bottleneck problem of supercapacitors is that the energy density is not high enough. The formula for calculating the energy density of a supercapacitor is E=0.5CV 2 , where C is the specific capacitance and V is the working voltage. Traditional commercial supercapacitors mainly use activated carbon as the electrode material. Activated carbon stores charge thro...

Claims

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Application Information

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IPC IPC(8): H01G11/86H01G11/24H01G11/30
CPCY02E60/13H01G11/86H01G11/24H01G11/30
Inventor 肖婷李锦谭新玉向鹏姜礼华
Owner CHINA THREE GORGES UNIV
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