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Simple preparation method of cobalt nickel sulfide nanosheet serving as supercapacitor electrode material

A supercapacitor, cobalt-nickel sulfide technology, applied in chemical instruments and methods, inorganic chemistry, nickel compounds, etc., to achieve the effects of high repeatability, easy control, and simple synthesis process

Active Publication Date: 2017-08-04
东营睿港管道工程有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the above, cobalt nickel sulfide nanosheet electrode materials with high capacity, high energy density and mass production have not been reported yet.

Method used

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  • Simple preparation method of cobalt nickel sulfide nanosheet serving as supercapacitor electrode material
  • Simple preparation method of cobalt nickel sulfide nanosheet serving as supercapacitor electrode material
  • Simple preparation method of cobalt nickel sulfide nanosheet serving as supercapacitor electrode material

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Experimental program
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Effect test

Embodiment 1

[0019] A kind of convenient preparation method for supercapacitor electrode material cobalt-nickel sulfide nano-sheet, the method for preparing cobalt-nickel sulfide nano-sheet comprises the following steps:

[0020] (1) Weigh 1.455g of Co(NO 3 ) 2 , 1.454g of Ni(NO 3 ) 2 ·6H 2 O. 1.6406g of NaAC was dissolved in a mixed solution of 20ml of polyethylene glycol and 20ml of ethylene glycol, dispersed by ultrasonic to form a homogeneous solution, stirred for 30 minutes, put the above mixed solution into a 40mL reaction kettle, and reacted at 200°C After 14 hours, the suspension was taken, washed by centrifugation, and vacuum-dried at 60°C for 12 hours to obtain a cobalt-nickel nanosheet precursor (Ni:Co=1:1);

[0021] (2) Weigh 60mg of the cobalt-nickel precursor (Ni:Co=1:1) obtained in step (1) and redisperse it in 40ml of absolute ethanol, add 120mg of thioacetamide (TAA), and transfer it to the reaction kettle after ultrasonic dispersion , reacted at 150°C for 1 hour, too...

Embodiment 2

[0026] (1) Weigh 2.9103g of Co(NO 3 ) 2 , 1.4543g of Ni(NO 3 ) 2 ·6H 2 O. 2.4609g of NaAC was dissolved in a mixed solution of 20ml polyethylene glycol and 20ml ethylene glycol, dispersed by ultrasonic to form a homogeneous solution, stirred for 30 minutes, put the above mixed solution into a 40mL reaction kettle, and reacted at 180°C After 16 hours, the suspension was taken, washed by centrifugation, and vacuum-dried at 60° C. for 12 hours to obtain a cobalt-nickel nanosheet precursor (Ni:Co=1:2).

[0027] (2) Weigh 60mg of the cobalt-nickel precursor (Ni:Co=1:1) obtained in step (1) and redisperse it in 40ml of absolute ethanol, add 120mg of thioacetamide (TAA), and transfer it to the reaction kettle after ultrasonic dispersion , reacted at 130°C-150°C for 1-2 hours, took the suspension, washed it by centrifugation, and dried it in vacuum at 60°C for 12 hours.

[0028] For the XRD test result in this instance shows: as figure 1 As shown in , the abscissa X is the diffr...

Embodiment 3

[0031] (1) Weigh 1.455g of Co(NO 3 ) 2 , 2.908g of Ni(NO 3 ) 2 , 2.4609g of NaAC was dissolved in a mixed solution of 20ml of polyethylene glycol and 20ml of ethylene glycol, dispersed by ultrasonic to form a homogeneous solution, stirred for 30 minutes, put the above mixed solution into a 40mL reaction kettle, and reacted at 200°C for 15 Hours later, the suspension was taken, washed by centrifugation, and vacuum-dried at 60° C. for 12 hours to obtain a cobalt-nickel nanosheet precursor (Ni:Co=2:1).

[0032] (2) Weigh 60 mg of the cobalt-nickel nanosheet precursor (Ni:Co=1:1) obtained in step (1) and redisperse it in 40 ml of absolute ethanol, add 120 mg of thioacetamide (TAA), and transfer it to In the reaction kettle, react at 130°C-150°C for 1-2 hours, take the suspension, wash it by centrifugation, and dry it in vacuum at 60°C for 12 hours. The sample is labeled cobalt nickel sulfide nanosheet (Ni:Co=2:1).

[0033] For the XRD test result in this instance shows: as fi...

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Abstract

The invention relates to a simple preparation method of a cobalt nickel sulfide nanosheet serving as a supercapacitor electrode material by adoption of a simple two-step solvothermal technique. The simple preparation method of the cobalt nickel sulfide nanosheet serving as the supercapacitor electrode material includes: adopting transition metal salt cobalt nitrate, nickel nitrate and anhydrous sodium acetate as reaction raw materials, and respectively adopting polyethylene glycol, ethylene glycol and ethyl alcohol as solvents and taking TAA (thioacetamide) as a sulfur source to prepare the cobalt nickel sulfide nanosheet according to a two-step solvothermal method. The cobalt nickel sulfide nanosheet prepared according to the method has advantages of high repeatability, simplicity in synthesis process, easiness in control and high yield. The laminar structure is beneficial to surface quick action of electrolyte ions and electrodes, efficient charging and discharging are benefited, and a high specific capacity can be provided.

Description

technical field [0001] The invention belongs to the technical field of transition metal sulfide preparation technology and supercapacitor electrode materials, in particular to a simple and convenient preparation method for supercapacitor electrode material cobalt-nickel sulfide nanosheets. Background technique [0002] As a typical transition metal sulfide, cobalt-nickel sulfide is widely used in the fields of electrocatalysis, solar cells and supercapacitors because of its easy preparation, environmental friendliness, non-toxicity and excellent optical, magnetic and electrochemical properties. It has received more and more attention and research enthusiasm. Compared with the binary metal sulfides (NiSx, CoSx), the ternary metal cobalt-nickel sulfide causes changes in the crystal structure due to the introduction of new metal atoms in the structure, thereby improving its optical, magnetic and electrochemical properties. . Therefore, compared with single metal sulfides, cob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/00
CPCC01G53/006C01P2002/72C01P2004/03C01P2004/04C01P2004/61
Inventor 胡勇李志鹏沈峻岭
Owner 东营睿港管道工程有限责任公司
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