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Polyindole-coated nickel-cobalt compound supercapacitor material and preparation method thereof

A technology of supercapacitor and polybenzazole package, which is applied in the manufacture of hybrid/electric double layer capacitors, electrodes of hybrid capacitors, etc. Effect

Inactive Publication Date: 2020-03-13
朱旭烈
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a polybenzazole-coated nickel-cobalt compound supercapacitor material and its preparation method, which solves the problems of poor conductivity and easy agglomeration of transition metal supercapacitor materials in the electrolyte

Method used

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preparation example Construction

[0026] The preparation method of nickel-cobalt layered double metal hydroxide comprises the following steps:

[0027] (1) Add methanol solvent to the reaction flask, and then add CoCl 2 and 2-methylimidazole, stir until the solid dissolves, place the reaction bottle in a constant temperature water bath and heat to 65-75°C, stir and reflux at a constant speed for 1-2h, then add NiCl 2 ethanol solution, the volume ratio of methanol and ethanol is 2-3:1, CoCl 2 、NiCl 2 The molar ratio of the three substances, 2-methylimidazole and 2-methylimidazole, is 1:4-4.4:2-2.2, heated to 80-90° C., stirred and refluxed at a constant speed for 2-3 hours.

[0028] (2) Cool the solution to room temperature, remove the solvent by concentrating under reduced pressure, wash the solid product with an appropriate amount of distilled water and anhydrous ether in sequence, and heat it in an oven to 70-80°C to fully dry to prepare the nickel-cobalt layered bismuth metal hydroxide.

[0029] S / N co-...

Embodiment 1

[0037] (1) Preparation of nickel-cobalt layered double metal hydroxide 1: add methanol solvent to the reaction flask, and then add CoCl in turn 2 and 2-methylimidazole, stir until the solid dissolves, place the reaction bottle in a constant temperature water bath and heat to 65°C, stir and reflux at a constant speed for 1 hour, then add NiCl 2 ethanol solution, the volume ratio of methanol and ethanol is 2:1, CoCl 2 、NiCl 2 The molar ratio of 2-methylimidazole and 2-methylimidazole is 1:4:2, heat to 80°C, stir and reflux at a constant speed for 2h, cool the solution to room temperature, remove the solvent by concentrating under reduced pressure, and use appropriate amount of distilled water and The solid product was washed with anhydrous ether, and placed in an oven heated to 70°C to fully dry to prepare nickel-cobalt layered double hydroxide 1.

[0038] (2) Preparation of sulfonated polyvinylpyridine nanotube component 1: Pass high-purity N into the reaction flask 2 Exhaus...

Embodiment 2

[0043] (1) Preparation of nickel-cobalt layered double metal hydroxide 2: add methanol solvent to the reaction flask, and then add CoCl in turn 2 and 2-methylimidazole, stir until the solid dissolves, place the reaction bottle in a constant temperature water bath and heat to 75°C, stir and reflux at a constant speed for 2 hours, then add NiCl 2 ethanol solution, the volume ratio of methanol and ethanol is 2:1, CoCl 2 、NiCl 2 The molar ratio of 2-methylimidazole and 2-methylimidazole is 1:4:2.2, heat to 80°C, stir and reflux at a constant speed for 3h, cool the solution to room temperature, remove the solvent by concentrating under reduced pressure, and use appropriate amount of distilled water and The solid product was washed with anhydrous ether, and placed in an oven heated to 70° C. to fully dry to prepare nickel-cobalt layered double metal hydroxide 2 .

[0044] (2) Preparation of sulfonated polyvinylpyridine nanotube component 2: Pass high-purity N into the reaction fla...

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Abstract

The invention relates to the technical field of supercapacitors, and discloses a polyindole-coated nickel-cobalt compound supercapacitor material and a preparation method thereof, and the polyindole-coated nickel-cobalt compound supercapacitor material comprises the following formula raw materials: nickel-cobalt layered double hydroxide, S / N co-doped carbon nanotubes, indole-6-carboxylic acid, 4-nitrobenzaldehyde, tert-butyl isocyanide and ammonium persulfate. The invention discloses a polyindole coated nickel-cobalt compound supercapacitor material and a preparation method thereof. The nickel-cobalt layered double hydroxide has excellent electrochemical performance and chemical stability; the mixture is uniformly dispersed into S / N doped porous carbon nanotubes; the reduction of active sites due to agglomeration and caking is avoided; n atoms are doped, so that the conductivity of the electrode material is improved, the polyindole derivative coats the nickel-cobalt layered double hydroxide, the volume expansion of the electrode material is inhibited, the polyindole derivative has excellent conductivity, the diffusion and transmission rates of charges and metal ions are improved, and the number of charge carriers is increased.

Description

technical field [0001] The invention relates to the technical field of supercapacitor materials, in particular to a polybenzazole-coated nickel-cobalt compound supercapacitor material and a preparation method thereof. Background technique [0002] Supercapacitor is a new type of energy storage device between traditional capacitors and rechargeable batteries. It not only has the characteristics of fast charging and discharging of capacitors, but also has the energy storage characteristics of rechargeable batteries. Compared with traditional physical capacitors, supercapacitors It has the advantages of high power density, long cycle life, wide operating temperature limit, and environmental protection. Supercapacitors have large capacitance and high power density. Therefore, they have great application prospects in alternative power supplies, backup power supplies, and high-power output. [0003] The electrode materials of supercapacitors mainly include carbon materials, such a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/26H01G11/30H01G11/48H01G11/86
CPCH01G11/26H01G11/30H01G11/48H01G11/86Y02E60/13
Inventor 朱旭烈
Owner 朱旭烈
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