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Sea urchin like NiCo2S4 electrode material solvothermal synthesis method

An electrode material, solvothermal technology, applied in the field of electrochemical energy storage, to achieve the effects of high purity, good crystallinity, and simplified preparation process

Inactive Publication Date: 2014-12-10
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above patents prepare NiS and Co 3 S 4 mixture, the electrochemical performance of the composite electrode material needs to be further improved

Method used

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  • Sea urchin like NiCo2S4 electrode material solvothermal synthesis method
  • Sea urchin like NiCo2S4 electrode material solvothermal synthesis method
  • Sea urchin like NiCo2S4 electrode material solvothermal synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) 0.6mmolNiCl 2 ·6H 2 O, 1.2 mmol CoCl 2 ·6H 2 O was dissolved in 40ml deionized water, and then 8mmolCS(NH 2 ) 2 , Stir with a magnetic stirrer to make it mix evenly, then add 40ml diethanolamine, continue to stir with a magnetic stirrer until a clear solution.

[0027] (2) Transfer the solution in step (1) to a 100ml autoclave lined with polytetrafluoroethylene, heat to 140°C, and keep at constant temperature for 12h.

[0028] (3) Bring the temperature of the reaction kettle down to normal temperature, wash the product in step (2) several times with deionized water and ethanol, and then transfer the reactant to a 60°C oven for drying.

[0029] (4) NiCo obtained in step (3) 2 S 4 Electrode materials were characterized and tested for electrochemical performance.

[0030] Such as figure 1 As shown, the diffraction peaks in the XRD pattern of the material and the NiCo 2 S 4 (111), (220), (311), (222), (400), (422), (511), (440) crystal faces of (JCPDS No. 24-...

Embodiment 2

[0040] (1) 0.6mmolNiCl 2 ·6H 2 O, 1.2 mmol CoCl 2 ·6H 2 O was dissolved in 40ml deionized water, and then 8mmolCS(NH 2 ) 2 , Stir with a magnetic stirrer to make it mix evenly, then add 40ml diethanolamine, continue to stir with a magnetic stirrer until a clear solution.

[0041] (2) The solution in step (1) was transferred to a 100ml autoclave with a polytetrafluoroethylene liner, heated to 160°C, and kept at a constant temperature for 12h.

[0042] (3) Bring the temperature of the reaction kettle down to normal temperature, wash the product in step (2) several times with deionized water and ethanol, and then transfer the reaction product to a 60°C oven for drying.

[0043] (4) NiCo obtained in step (3) 2 S 4 Electrode materials were characterized and tested for electrochemical performance.

Embodiment 3

[0045] (1) 0.6mmolNiCl 2 ·6H 2 O, 1.2 mmol CoCl 2 ·6H 2 O was dissolved in 40ml deionized water, and then 8mmolCS(NH 2 ) 2 , Stir with a magnetic stirrer to make it mix evenly, then add 40ml diethanolamine, continue to stir with a magnetic stirrer until a clear solution.

[0046] (2) Transfer the solution in step (1) to a 100ml autoclave lined with polytetrafluoroethylene, heat to 180°C, and keep at constant temperature for 12h.

[0047] (3) Bring the temperature of the reaction kettle down to normal temperature, wash the product in step (2) several times with deionized water and ethanol, and then transfer the reactant to a 60°C oven for drying.

[0048] (4) NiCo obtained in step (3) 2 S 4 Electrode materials were characterized and tested for electrochemical performance.

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Abstract

The invention relates to a sea urchin like NiCo2S4 electrode material solvothermal synthesis method. The method includes 1, dissolving NiCl2 6H2O, CoCl2 6H2O and CS (NH2) 2 into deionized water, stirring for even mixing, adding diethanolamine after the solution is clarified, and stirring continuously till the solution is mixed evenly; 2, transferring the solution obtained by the step 1 to a high-pressure reaction kettle, heating at the temperature of 140 to 160 DEG C and remaining for 8 to 16 hours; 3, waiting the temperature of the high-pressure reaction kettle to decrease naturally to the room temperature, washing the product of step 2 before transferring to a drying oven for drying, and obtaining the NiCo2S4 electrode material. Compared with the prior art, the method has the advantages that the synthesis method is facilitated and environment-friendly, the purity of the product is high, the yield is large, and the performance is excellent.

Description

technical field [0001] The invention belongs to the field of electrochemical energy storage, in particular to a solvothermal synthesis of NiCo 2 S 4 methods of electrode materials. Background technique [0002] Supercapacitors, also known as electrochemical capacitors, are a new type of energy storage equipment. It has large-capacity energy storage performance and excellent pulse charge and discharge performance, light weight, high energy, and can be charged and discharged many times. In recent years, supercapacitors have developed vigorously and received extensive attention from all walks of life. The performance of a supercapacitor is related to many factors, such as: electrode material, electrolyte and the diaphragm used, and the electrode material is an important part of a supercapacitor, and the most important factor affecting a supercapacitor. At present, there have been many reports on metal oxides and hydroxides as capacitor materials, such as NiO, Co 3 o 4 , M...

Claims

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Application Information

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IPC IPC(8): H01G11/86
Inventor 张蔷胡中华刘亚菲姚明明刘佩佩
Owner TONGJI UNIV
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