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Polyaniline-manganese dioxide-titanium nitride nanowire array composite material and preparation method and application thereof

A technology of nano-titanium nitride and manganese dioxide, which is applied in the manufacture of hybrid/electric double layer capacitors and electrodes of hybrid capacitors, can solve the problems of low material utilization and poor conductivity, and achieve the goal of wide application value and industrial production prospects Effect

Inactive Publication Date: 2014-12-24
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Manganese dioxide is a commonly used transition metal oxide material in the field of energy storage, which has relatively low cost, high theoretical capacity and environmental friendliness, but as an oxide, the conductivity of manganese dioxide material is poor, and its In the actual electricity storage of electrode materials, only a thickness of about tens of nanometers below the surface layer is involved in the reaction, so the utilization rate of the entire material is low

Method used

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  • Polyaniline-manganese dioxide-titanium nitride nanowire array composite material and preparation method and application thereof

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Embodiment 1

[0032] Schematic diagram of the preparation process of the polyaniline-manganese dioxide-titanium nitride nanowire array composite material, see the attached figure 1. First, based on the seed-assisted hydrothermal reaction method and the high-temperature nitriding reaction process (A), a titanium nitride nanowire array was prepared on the surface of the carbon substrate 1: the carbon substrate material was soaked in the impregnated seed solution, and was physically adsorbed on the carbon substrate. A seed layer is formed on the surface of the material. After calcination, it is put into a sealed hydrothermal reaction kettle, and the mixed solution of hydrochloric acid, water and titanium-based precursor is used as the reaction liquid for hydrothermal treatment. After drying, it is nitrided at a high temperature under an ammonia atmosphere to obtain a surface Carbon substrate 2 with ordered titanium nitride nanowire arrays; secondly, based on the potentiostatic electrochemical ...

Embodiment 2

[0034] The preparation of polyaniline-manganese dioxide-titanium nitride nanowire array composite material, the specific steps are as follows:

[0035] (1) Preparation of titania nanowire arrays by seed-assisted hydrothermal reaction method: the carbon fiber substrate was cleaned with acetone, ethanol and deionized water in sequence. Put the dried carbon fiber into the seed impregnation solution containing 0.5mol / L tetrabutyl titanate ethanol solution, soak it fully under stirring, take it out and dry it, put it into a tube furnace for calcination at 350°C for 30min in the hollow atmosphere; then put After calcination, put the sample into a 50mL hydrothermal reaction kettle, add a mixed reaction solution containing 15mL of 37% concentrated hydrochloric acid, 15mL of water and 0.45mL of tetrabutyl titanate, and the hydrothermal reaction time is 7h at 180°C. Take it out after the reaction After washing and drying, a titanium oxide nanowire array can be prepared on the surface of...

Embodiment 3

[0041] The preparation of polyaniline-manganese dioxide-titanium nitride nanowire array composite material specifically includes the following steps:

[0042] (1) Preparation of titanium dioxide nanowire arrays by the seed-assisted hydrothermal reaction method: the carbon cloth substrate was washed and dried with acetone, ethanol and deionized water in sequence, and then put into the seeds containing 0.4mol / L tetrabutyl titanate ethanol solution In the impregnation solution, soak for 20 minutes under stirring, take it out and dry it, put it into the hollow atmosphere of the tube furnace and calcinate at 380°C for 20 minutes. Then put the calcined sample into a 100mL hydrothermal reaction kettle, add a mixed reaction solution containing 30mL 37% concentrated hydrochloric acid, 32mL water and 2mL tetrabutyl titanate, and the hydrothermal reaction time is 5h at 150°C. Take it out, wash and dry it, and the titanium oxide nanowire array can be prepared on the surface of the carbon ...

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Abstract

The invention provides a polyaniline-manganese dioxide-titanium nitride nanowire array composite material which comprises a carbon substrate (1), a titanium nitride nanowire array (2), a villiform manganese dioxide nano-film (3) and a coralliform polyaniline nanofiber (4). The titanium nitride nanowire array (2) is perpendicularly arranged on the surface of the carbon substrate (1) and connected with the carbon substrate (1) to form an integral structure, the manganese dioxide nano-film (3) coats the surface of the titanium nitride nanowire array (2), and the coralliform polyaniline nanofiber (4) is adhered on the surface of the manganese dioxide nano-film (3). The invention further provides a preparation method of the composite material and application of the composite material in a supercapacitor. The polyaniline-manganese dioxide-titanium nitride nanowire array composite material has features of an orderly-arranged porous structure, is regular and controllable in shape and appearance, can be directly applied to an electrode material of the supercapacitor and has wide actual application value and industrial production prospect.

Description

technical field [0001] The invention belongs to the field of preparation of supercapacitor electrode materials, in particular to a method for preparing a polyaniline-manganese dioxide-titanium nitride nanowire array composite material for supercapacitors. Background technique [0002] In recent years, with the emergence of portable electronic equipment, its supporting power supply has also become a research hotspot. As a new type of energy storage device, supercapacitor is famous for its high specific power and long cycle life. It will play an important role in the field of energy storage in the future, and it will also provide important guidance for the development of fast charging and discharging secondary batteries in the future. significance. The key factor in the preparation of supercapacitors is the electrode material. Although various supercapacitor models have appeared in related reports, due to the rapid development of electrode materials, new nanocomposite materi...

Claims

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Application Information

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IPC IPC(8): H01G11/48H01G11/86
Inventor 谢一兵夏池
Owner SOUTHEAST UNIV
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