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ZnCo2S4 nanosphere electrode material with core-shell hollow structure and preparation method of ZnCo2S4 nanosphere electrode material

A hollow structure, electrode material technology, applied in the direction of cobalt compounds, chemical instruments and methods, hybrid capacitor electrodes, etc., to achieve the effect of easy operation, high yield and simple operation

Inactive Publication Date: 2018-10-02
ANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the core-shell hollow ZnCo 2 S 4 Electrode materials are rarely reported

Method used

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  • ZnCo2S4 nanosphere electrode material with core-shell hollow structure and preparation method of ZnCo2S4 nanosphere electrode material
  • ZnCo2S4 nanosphere electrode material with core-shell hollow structure and preparation method of ZnCo2S4 nanosphere electrode material
  • ZnCo2S4 nanosphere electrode material with core-shell hollow structure and preparation method of ZnCo2S4 nanosphere electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] ① Add 0.07440g of zinc nitrate hexahydrate and 0.1456g of cobalt nitrate hexahydrate into a mixed solvent of 7.50mL glycerin and 52.50mL of isopropanol, stir to dissolve and mix well, then transfer the above mixed solution to a reaction kettle, and heat at 180°C Under the conditions, the solvothermal reaction was carried out for 24 hours. After the reaction was completed, it was naturally cooled to room temperature, the product was centrifuged, washed several times with absolute ethanol and dried to obtain a solid spherical Zn-Co alkoxide precursor.

[0022] ② Disperse 0.03000g of the solid spherical Zn-Co alkoxide precursor prepared in step ① into 20.0mL of 2.5g / L thioacetamide ethanol solution, stir and mix, transfer the mixture to the reaction kettle, and Under the condition of ℃, react for 12h, after the reaction, naturally cool to room temperature, the product is centrifuged, washed several times with absolute ethanol and dried to obtain the core-shell hollow struct...

Embodiment 2

[0025] ①Add 0.1487g of zinc nitrate hexahydrate and 0.2910g of cobalt nitrate hexahydrate into a mixed solvent of 7.5mL glycerin and 52.5mL of isopropanol, stir to dissolve and mix well, transfer the above mixed solution to a reaction kettle, and heat at 200°C Under the conditions, the solvothermal reaction was carried out for 24 hours. After the reaction was completed, it was naturally cooled to room temperature, the product was centrifuged, washed several times with absolute ethanol and dried to obtain a solid spherical Zn-Co alkoxide precursor.

[0026] ② Disperse 0.03000g of solid spherical Zn-Co alkoxide precursor prepared in step ① into 20.0mL of 2.5g / L thioacetamide ethanol solution, stir and mix well, transfer the mixture to the reaction kettle, and Under the condition of ℃, react for 12h, after the reaction, naturally cool to room temperature, the product is centrifuged, washed several times with absolute ethanol and dried to obtain the core-shell hollow structure ZnCo...

Embodiment 3

[0028] ① Add 0.1487g of zinc nitrate hexahydrate and 0.2910g of cobalt nitrate hexahydrate into a mixed solvent of 15mL glycerin and 45mL of isopropanol, stir to dissolve and mix well, then transfer the above mixture to a reaction kettle, and put it under the condition of 220℃ , solvothermal reaction for 24h, after the reaction, naturally cooled to room temperature, the product was centrifuged, washed several times with absolute ethanol and dried to obtain a solid spherical Zn-Co alkoxide precursor.

[0029] ② Disperse 0.03000g of the solid spherical Zn-Co alkoxide precursor prepared in step ① into 20.0mL of 2.5g / L thioacetamide ethanol solution, stir and mix, transfer the mixture to the reaction kettle, and Under the condition of ℃, react for 12h, after the reaction, naturally cool to room temperature, the product is centrifuged, washed several times with absolute ethanol and dried to obtain the core-shell hollow structure ZnCo 2 S 4 nanosphere electrode material.

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Abstract

The invention discloses a ZnCo2S4 nanosphere electrode material with a core-shell hollow structure and a preparation method of the ZnCo2S4 nanosphere electrode material, and belongs to the technical field of functional material preparation. The preparation method comprises the following steps: firstly, a solid spherical Zn-Co alkoxide precursor is prepared from zinc nitrate and cobalt nitrate as raw materials and glycerol and isopropanol as solvents with a solvothermal method, and then, the precursor is vulcanized in an ethanol solution of thioacetamide, and the ZnCo2S4 nanosphere electrode material with the core-shell hollow structure is obtained. The electrode material has specific surface area as high as 117.3m<2>g<-1>. The capacitance of the electrode material is as high as 1045.3 F g<-1> when the electrode material is applied to supercapacitors and current density is 2.0 A g<-1>, and 95.5% of capacitance is still maintained after 5000 continuous charge and discharge cycles, and itindicates that the ZnCo2S4 nanosphere electrode material with the core-shell hollow structure has a good electrical storage characteristic.

Description

technical field [0001] The invention relates to a core-shell hollow structure ZnCo 2 S 4 A nanosphere electrode material and a preparation method thereof belong to the technical field of preparation of functional materials. Background technique [0002] As a new type of electrochemical energy storage device, supercapacitor has many excellent characteristics such as fast charge and discharge, high power density, long cycle life, simple maintenance, and environmental friendliness, so it has attracted great attention from researchers at home and abroad. Electrode materials are the core components of supercapacitor devices, and the design and synthesis of electrode materials are the key to obtaining high-performance supercapacitor devices. Among many electrode materials, binary metal sulfide materials have become the focus of attention due to their high specific capacitance, abundant redox sites, and high electrical conductivity. Among them, the binary metal sulfide can reali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G51/00H01G11/24H01G11/30
CPCC01G51/006C01P2002/72C01P2002/80C01P2004/03C01P2004/34C01P2006/40H01G11/24H01G11/30Y02E60/13
Inventor 魏成振程承杜记民刘林张道军
Owner ANYANG NORMAL UNIV
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