Water-system asymmetric super-capacitor based on NiCo2S4 and NiCo2S4 composite material

A technology of supercapacitors and composite materials, which is applied in the fields of hybrid capacitor electrodes, hybrid/electric double-layer capacitor manufacturing, and double-layer capacitors, etc., can solve the problems of low energy density, etc. Effect

Active Publication Date: 2015-01-21
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Aiming at the defects of low energy density of traditional capacitors, the invention provides a ...

Method used

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  • Water-system asymmetric super-capacitor based on NiCo2S4 and NiCo2S4 composite material
  • Water-system asymmetric super-capacitor based on NiCo2S4 and NiCo2S4 composite material
  • Water-system asymmetric super-capacitor based on NiCo2S4 and NiCo2S4 composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1)NiCoS 4 Preparation of Nanomaterials

[0025] A Weigh the raw material Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 O is dissolved in the mixed solvent of deionized water and ethylene glycol, and fully stirred, the Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 The mass ratio of O is 1:2. Then add 0.5mL CS with vigorous stirring 2 , continue stirring to dissolve to obtain a mixed solution.

[0026]B Transfer the mixed solution obtained above to a 100mL hydrothermal reaction kettle for hydrothermal reaction, the reaction temperature is 100-200°C, the reaction time is 6-48h, and naturally cool to room temperature after the reaction.

[0027] C. The product obtained above was separated with a centrifuge at a speed of 8000 rpm, washed several times with ethanol and deionized water respectively, and then dried at 60°C for 24 hours to obtain the product.

[0028] (2)NiCoS 4 Electrode preparation

[0029] The NiCoS obtained in step (1) 4 , acetylene black, and PVD...

Embodiment 2

[0035] (1)AC / NiCoS 4 Preparation of composite materials

[0036] A Weigh the raw material Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 O is dissolved in the mixed solvent of deionized water and ethylene glycol, and fully stirred, the Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 The mass ratio of O is 1:2. Then add 0.02g AC to the above mixed solution, and then add 0.5mL CS under strong stirring 2 , continue stirring to dissolve to obtain a mixed solution.

[0037] B Transfer the mixed solution obtained above to a 100mL hydrothermal reaction kettle for hydrothermal reaction, the reaction temperature is 100-200°C, the reaction time is 6-48h, and naturally cool to room temperature after the reaction.

[0038] C. The product obtained above was separated with a centrifuge at a speed of 8000 rpm, washed several times with ethanol and deionized water respectively, and then dried at 60°C for 24 hours to obtain the product.

[0039] (2)AC / NiCoS 4 Electrode preparation

...

Embodiment 3

[0046] (1)CQDs / NiCoS 4 Preparation of composite materials

[0047] A Weigh the raw material Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 O is dissolved in the mixed solvent of deionized water and ethylene glycol, and fully stirred, the Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 The mass ratio of O is 1:2. Then add 0.02g CQDs to the above mixed solution, and then add 0.5mL CS 2 , continue stirring to dissolve to obtain a mixed solution.

[0048] B Transfer the mixed solution obtained above to a 100mL hydrothermal reaction kettle for hydrothermal reaction, the reaction temperature is 100-200°C, the reaction time is 6-48h, and naturally cool to room temperature after the reaction.

[0049] C. The product obtained above was separated with a centrifuge at a speed of 8000 rpm, washed several times with ethanol and deionized water respectively, and then dried at 60°C for 24 hours to obtain the product.

[0050] (2)CQDs / NiCoS 4 Electrode preparation

[0051] The CQDs ...

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Abstract

The invention relates to a water-system asymmetric super-capacitor based on NiCo2S4 and a NiCo2S4 composite material, and belongs to the technical field of chemical power supplies. The super-capacitor comprises the following materials: (1) NiCo2S4 and the NiCo2S4 composite cathode material (including AC/NiCo2S4, CQDs/NiCo2S4, GNP/NiCo2S4, CNTs/NiCo2S4 and CF/NiCo2S4) which serve as an anode, (2) a carbon-based anode material (including AC, CQDs, GNP, CNTs and CF) which serves as an cathode, (3) a KOH solution which serves as an electrolytic solution, (4) a diaphragm, (5) an anode gasket, (6) a cathode gasket, and (7) a housing. The prepared asymmetric super-capacitor has the voltage window of 1.5 V and is high in energy density, excellent in cyclic stability, low in internal resistance, easy to prepare, safe to use, low in cost, environment-friendly and suitable for commercialized production.

Description

technical field [0001] The invention relates to a NiCo-based 2 S 4 The invention relates to a water-system asymmetric supercapacitor of a composite material thereof, and belongs to the technical field of chemical power sources. Background technique [0002] In recent years, supercapacitors have attracted extensive attention from researchers due to their high power density, fast charge and discharge, and long cycle life. application prospects. At present, the key factors affecting the development of capacitors are electrode materials, electrolytes matching electrode materials, and electrode preparation technology, among which electrode materials are the key bottleneck restricting its development. Electrode materials generally include carbon materials, metal oxides, conductive polymers, and their composites. Metal oxides have been extensively studied due to their high specific capacity and excellent cycle reversibility. Among these metal oxides, RuO 2 Due to its high pri...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/86
CPCH01G11/00H01G11/30H01G11/32H01G11/34H01G11/36H01G11/40H01G11/86Y02E60/13
Inventor 纪效波朱裔荣吴志彬景明俊贾鑫男
Owner CENT SOUTH UNIV
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