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Preparation method and application of cobalt oxysulfide porous nanorod material

A technology of cobalt oxysulfide and nanorods, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of low cycle life, small specific surface area, low specific capacitance, etc., and achieve excellent performance , The preparation process is simple, and the effect of improving conductivity

Inactive Publication Date: 2020-08-28
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional electrode materials have certain defects in practical applications, such as: low specific capacitance, poor conductivity, small specific surface area, low cycle life, etc. These defects make it difficult to meet the needs of practical applications

Method used

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  • Preparation method and application of cobalt oxysulfide porous nanorod material
  • Preparation method and application of cobalt oxysulfide porous nanorod material
  • Preparation method and application of cobalt oxysulfide porous nanorod material

Examples

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Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of cobalt oxysulfide porous nanorod material, comprising the following steps:

[0027] (1) Mix 12mmol aminotriacetic acid and 24mmol cobalt chloride hexahydrate with 30ml deionized water and 10ml isopropanol, stir vigorously, pour the solution into a reaction kettle, seal it, and place it in a blast drying box Heating at 160°C for 6h, cooling to room temperature, centrifuging the product and washing it three times with deionized water and ethanol, and then drying in a blast drying oven at 60°C for 24h to obtain a cobalt oxysulfide nanorod precursor;

[0028] (2) Put the cobalt oxysulfide nanorod precursor into a porcelain boat, place it in a muffle furnace and calcinate at 600° C. for 4 hours to obtain an intermediate cobalt oxysulfide nanorod;

[0029] (3) Mix 16mmol of thioacetamide, 4mmol of cobalt oxysulfide nanorod intermediate product and 40ml of absolute ethanol, pour into the reaction kettle and place it in a blast drying oven at 120°C for 6...

Embodiment 2

[0033] The specific application method is: after mixing the prepared cobalt oxysulfide nanorod intermediate product (Co-O) and cobalt oxysulfide (Co-O-S) porous nanorod material with acetylene black and polyvinylidene fluoride in a certain proportion, mix them Apply on clean nickel foam as working electrode of supercapacitor with three-electrode system. The platinum wire was used as the counter electrode, the calomel electrode was used as the reference electrode, and 2M KOH solution was used as the electrolyte. The CHI660E workstation was used to measure the cyclic voltammetry, galvanostatic charge-discharge and charge-discharge cycle curves of the electrode materials. The test of the cyclic voltammetry curve was carried out at different scan rates of 5, 10, 20, 30, 50, and 100 mV / s, and the voltage range was 0-0.6V. The result is as Figure 5 As shown, the cyclic voltammetry curves still show similar shapes even at a large scan rate, which indicates that the electrode materi...

Embodiment 3

[0035] A preparation method of cobalt oxysulfide porous nanorod material, comprising the following steps:

[0036](1) Mix 12mmol aminotriacetic acid and 36mmol cobalt chloride hexahydrate with 30ml deionized water and 10ml isopropanol, stir vigorously, pour the solution into the reaction kettle, seal it, and place it in a blast drying box Heating at 160°C for 6h, cooling to room temperature, centrifuging the product and washing it three times with deionized water and ethanol, putting it in a blast drying oven at 60°C for 24h to obtain the cobalt oxysulfide nanorod precursor;

[0037] (2) Put the cobalt oxysulfide nanorod precursor into a porcelain boat, place it in a muffle furnace for calcination at 500° C. for 6 hours, and obtain an intermediate cobalt oxysulfide nanorod;

[0038] (3) Mix 16mmol of thioacetamide, 4mmol of cobalt oxysulfide nanorod intermediate product and 40ml of absolute ethanol, pour it into the reaction kettle and place it in a blast drying oven at 130°C ...

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Abstract

The invention discloses a preparation method and application of a cobalt oxysulfide porous nanorod material, and provides a preparation method of a cobalt oxysulfide porous nanorod material. The preparation method comprises three steps of hydrothermal synthesis, calcination and vulcanization. According to the invention, the product obtained by the preparation method is large in specific surface area, excellent in performance, low in production cost and high in repeatability; and after the prepared cobalt oxysulfide porous nanorod powder is mixed with acetylene black and polyvinylidene fluorideaccording to a certain ratio, clean foamed nickel is coated with the obtained mixture so as to be used as a supercapacitor electrode material, so that the supercapacitor electrode material has good electrical conductivity, rich oxidation-reduction reaction, high energy density and power density and has potential application value in the field of energy storage.

Description

technical field [0001] The invention belongs to the interdisciplinary fields of nanomaterial preparation methods and electrochemical applications, and in particular relates to a preparation method and application of a cobalt oxysulfide porous nanorod material. Background technique [0002] With the increasingly serious problems of environmental pollution, the greenhouse effect and the sharp shortage of fossil energy in today's world, the existing resources will not be able to meet the growing needs of human beings, so it is urgent to seek alternative renewable energy and its storage devices . As an environmentally friendly energy storage device, supercapacitors have attracted more and more attention in recent years, and the electrode materials are the key. The current supercapacitor electrode materials are mainly divided into the following categories: carbon materials, metal oxides, and conductive polymers. However, traditional electrode materials have certain defects in p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/26H01G11/86B82Y30/00
CPCB82Y30/00H01G11/26H01G11/30H01G11/86Y02E60/13
Inventor 陶凯李幼静韩磊
Owner NINGBO UNIV
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