Method for synthesizing NiS/Co3S4 composite electrode material with solvothermal method

A technology of composite electrode and solvothermal method, which is applied in the field of electrochemical energy storage, can solve the problem of no sulfide, etc., and achieve the effects of good crystallinity, easy preparation, and large specific surface area

Inactive Publication Date: 2014-08-06
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as far as we know, there are no related reports on sulfide composite electrode materials.

Method used

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  • Method for synthesizing NiS/Co3S4 composite electrode material with solvothermal method
  • Method for synthesizing NiS/Co3S4 composite electrode material with solvothermal method
  • Method for synthesizing NiS/Co3S4 composite electrode material with solvothermal method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) 0.5mmol NiCl 2 ·6H 2 O, 1.5 mmol CoCl 2 ·6H 2 O was dissolved in 40ml deionized water, and then 8mmol CS(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.

[0025] (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.

[0026] (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.

[0027] (4) NiS / Co obtained in step (3) 3 S 4 Composite electrode materials were characterized and tested for electrochemical performance.

[0028] Such as figure 1 Shown, the XRD diffraction peaks in the composite material and NiS (JCPDSNo.12-41) and Co 3 8 4 (JCPDS42-1448) standard comparison card corresponds one by one...

Embodiment 2

[0038] (1) 1.5mmol NiCl 2 ·6H 2 O, 0.5 mmol CoCl 2 ·6H 2 O was dissolved in 40ml deionized water, and then 8mmol CS(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.

[0039] (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.

[0040] (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.

[0041] (4) NiS / Co obtained in step (3) 3 S 4 Composite electrode materials were characterized and tested for electrochemical performance.

Embodiment 3

[0043] (1) 1mmol NiCl 2 ·6H 2 O, 1 mmol CoCl 2 ·6H 2 O was dissolved in 40ml deionized water, and then 8mmol CS(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.

[0044] (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.

[0045] (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.

[0046] (4) NiS / Co obtained in step (3) 3 S 44 Composite electrode materials were characterized and tested for electrochemical performance.

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Abstract

The invention relates to a method for synthesizing a NiS / Co3S4 composite electrode material with a solvothermal method. The method for synthesizing the NiS / Co3S4 composite electrode material with the solvothermal method comprises the following steps that (1) NiCl2*6H2O, CoCl2*6H2O and CS(NH2)2 are dissolved in deionized water and evenly mixed with the deionized water by means of stirring, then diethanol amine is added, and stirring continues until complete dissolution is achieved; (2) the solution obtained in the step (1) is transferred into a high-pressure reactor, heated to 160 DEG C-180 DEG C, and kept for 10 h-14 h at the constant temperature; (3) when the temperature of the high-pressure reactor is naturally decreased to the normal temperature, products obtained in the step (2) are washed and transferred into a dryer to be dried. Thus, the NiS / Co3S4 composite electrode material is obtained. Compared with the prior art, the method for synthesizing the NiS / Co3S4 composite electrode material with the solvothermal method has the advantages of being environmentally friendly, simple and convenient to implement, allowing synthetic products to be high in purity and excellent in performance, and the like.

Description

technical field [0001] The invention belongs to the field of electrochemical energy storage, in particular to a solvothermal synthesis of NiS / Co 3 S 4 Methods and applications of composite electrode materials. Background technique [0002] Supercapacitor is an energy storage element between traditional capacitors and chemical power sources. It has the advantages of high power density, fast charge and discharge, long cycle life and no environmental pollution. Electrode materials are very important components in supercapacitors. At present, there have been many reports on metal oxides and hydroxides as capacitor materials, such as NiO, Co 3 o 4 , MnO 2 , Ni(OH) 2 、Co(OH) 2 Wait. Metal sulfide capacitor materials have also been studied, but the research is still less. Due to the pseudocapacitive behavior of metal sulfide electrodes, the potential specific capacitance is higher than that of carbon materials, especially the sulfide NiS, Co 3 S 4 , SnS, ZnS and other imp...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/30
Inventor邓扬华胡中华刘亚菲张蔷姚明明刘佩佩
OwnerTONGJI UNIV