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Nickel-cobalt-iron ternary metal oxide nano tubular composite material and preparation method thereof

A ternary metal and composite material technology, used in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of small actual capacitance, poor conductivity, small specific surface area, etc. Simple operation and the effect of increasing the specific surface area

Active Publication Date: 2017-09-22
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But NiCo 2 o 4 It has relatively poor conductivity and small specific surface area, making its actual capacitance much smaller than the theoretical capacitance

Method used

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  • Nickel-cobalt-iron ternary metal oxide nano tubular composite material and preparation method thereof
  • Nickel-cobalt-iron ternary metal oxide nano tubular composite material and preparation method thereof
  • Nickel-cobalt-iron ternary metal oxide nano tubular composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Carbon fiber cloth pretreatment: Sonicate 30×30×0.1 mm carbon fiber cloth in absolute ethanol and distilled water for 15 min, wash, dry and weigh.

[0035] (2) Hydrothermal growth of NiCo 2 o 4 Precursor: Take 50 ml of distilled water, 1.1897 g of cobalt chloride hexahydrate, 0.5942 g of nickel chloride hexahydrate, 0.7289 g of CTAB, and 0.5405 g of urea, put them into a 200 ml beaker, mix well and mix with the treated The carbon fiber cloth was added into a polytetrafluoroethylene-lined hydrothermal kettle for hydrothermal reaction at 100 °C for 12 h. After the reaction was over, the samples were taken out, cleaned with deionized water, dried and weighed.

[0036] (3) Preparation of NiCo by water bath method 2-x Fe x o 4 Nanotube-shaped composite material: Take 50 ml of distilled water and the materials prepared in step (2) into a 200 ml beaker, and heat in a water bath. Take ferric chloride hexahydrate (the molar concentration in terms of iron is 0.1mol / L) a...

Embodiment 2

[0039](1) Carbon fiber cloth pretreatment: Sonicate 30×30×0.1 mm carbon fiber cloth in absolute ethanol and distilled water for 15 min, wash, dry and weigh.

[0040] (2) Hydrothermal growth of NiCo 2 o 4 Precursor: Take 50 ml of distilled water, 1.1897 g of cobalt chloride hexahydrate, 0.5942 g of nickel chloride hexahydrate, 0.7289 g of CTAB, and 0.5405 g of urea, and add them to a 200 ml beaker. The carbon fiber cloth was put into a polytetrafluoroethylene-lined hydrothermal kettle for hydrothermal reaction, and the reaction was carried out at 100 °C for 24 h. After the reaction was over, the samples were taken out, cleaned with deionized water, dried and weighed.

[0041] (3) Preparation of NiCo by water bath method 2-x Fe x o 4 Nanotube-shaped composite material: Take 50 ml of distilled water and the materials prepared in step (2) into a 200 ml beaker, and heat in a water bath. Take ferric chloride hexahydrate (the molar concentration in terms of iron is 0.2mol / L) an...

Embodiment 3

[0044] (1) Carbon fiber cloth pretreatment: Sonicate 30×30×0.1 mm carbon fiber cloth in absolute ethanol and distilled water for 15 min, wash, dry and weigh.

[0045] (2) Hydrothermal growth of NiCo 2 o 4 Precursor: Take 50 ml of distilled water, 1.1897 g of cobalt chloride hexahydrate, 0.5942 g of nickel chloride hexahydrate, 0.7289 g of CTAB, and 0.5405 g of urea, and add them to a 200 ml beaker. The carbon fiber cloth was put into a polytetrafluoroethylene-lined hydrothermal kettle for hydrothermal reaction, and the reaction was carried out at 120 °C for 24 h. After the reaction was over, the samples were taken out, cleaned with deionized water, dried and weighed.

[0046] (3) Preparation of NiCo by water bath method 2-x Fe x o 4 Nanotube-shaped composite material: Take 50 ml of distilled water and the materials prepared in step (2) into a 200 ml beaker, and heat in a water bath. Take ferric chloride hexahydrate (the molar concentration in terms of iron is 1 mol / L) an...

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Abstract

The invention discloses a nickel-cobalt-iron ternary metal oxide nano tubular composite material and a preparation method thereof. The preparation method comprises the steps of firstly, pre-treating and drying a carbon fiber fabric; preparing a mixed solution of cobalt chloride hexahydrate, nickel chloride hexahydrate, hexadecyl trimethyl ammonium bromide and urea by using distilled water as a solvent, putting the mixed solution and the carbon fiber fabric into a reactor for hydrothermal reaction, thus obtaining a NiCo2O4 precursor; and adding ferric chloride hexahydrate into the prepared precursor for water bath reaction, thus finally obtaining a NiCo2-xFexO4 nano tubular composite material. Because the prepared composite material has a tubular structure and is a nano particle, the specific surface area of the material is greatly increased, the electrode reaction kinetics is accelerated, and the super capacitive property of the material is improved. The composite material has excellent reversibility and cyclic stability. The preparation method is simple in operation and low in cost, and has a broad application prospect in the fields of energy storage, crystals and the like.

Description

technical field [0001] The invention relates to the field of preparation of a supercapacitor material, in particular to a nickel-cobalt-iron ternary metal oxide nanotubular supercapacitor composite material with good reversibility and long-term cycle stability and a preparation method thereof. Background technique [0002] With the burning of fossil fuels, the consumption of non-renewable resources and the increasing environmental pollution, it is urgent for people to develop and utilize renewable and clean energy. Based on the reasons of saving resources, energy and environmental protection, new green energy storage components are gradually developed. Due to the advantages of high energy density, rapid charge and discharge, good reversibility and cycle stability, environmental friendliness, and low cost, supercapacitors are a new, practical, and efficient energy storage device. [0003] Electrode materials play a pivotal role in the components of supercapacitors. The curr...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/46H01G11/86
CPCY02E60/13H01G11/46H01G11/30H01G11/86
Inventor 陈守刚柳昭慧王龙强程相阳林博
Owner OCEAN UNIV OF CHINA
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