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Carbon-coating titanium based nano array material and preparation method and application thereof

A nano-array, carbon-coated technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to achieve fast charge and discharge electrochemical storage performance, high capacity electrochemical storage performance Effect

Active Publication Date: 2015-05-13
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a great challenge currently facing supercapacitors is how to increase their energy density and stability while maintaining the power density of electrode materials.

Method used

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  • Carbon-coating titanium based nano array material and preparation method and application thereof
  • Carbon-coating titanium based nano array material and preparation method and application thereof
  • Carbon-coating titanium based nano array material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of carbon-coated titanium-based nanoarray materials, see figure 2 , including the following steps:

[0033]Based on the seed-assisted hydrothermal reaction method and controlled nitrogen doping reaction or complete nitriding reaction process (A), titanium oxide or nitrogen-doped titanium oxide or titanium nitride nanowires and nanopillars with orderly arrangement on the surface of conductive substrates were prepared Array (A1): soak the conductive substrate in the impregnation seed solution, form a seed layer on the surface of the substrate material by physical adsorption, put it into a sealed hydrothermal reaction kettle after high-temperature calcination, and mix hydrochloric acid, water and titanium-based precursors The liquid is a reaction liquid for hydrothermal reaction, and the material obtained from the reaction is subjected to a controlled nitrogen doping reaction or a complete nitriding reaction in an ammonia atmosphere to obtain titanium oxide, t...

Embodiment 2

[0037] A method for preparing a carbon-coated titanium nitride nanowire array material, the specific steps are as follows:

[0038] (1) Titanium oxide nanowire arrays were prepared by seed-assisted hydrothermal reaction method and high-temperature calcination treatment method: the carbon cloth substrate was cleaned with acetone, ethanol and deionized water in sequence. Put the dried carbon cloth into an ethanol solution containing 0.5 mol / L titanium tetrachloride, soak it fully under stirring, take it out and dry it, put it into a tube furnace, and calcinate it at 400°C for 10 minutes under a nitrogen atmosphere; then Put the calcined sample into a 100mL hydrothermal reaction kettle, add a mixed reaction solution containing 30mL 37% concentrated hydrochloric acid, 30mL water and 0.6mL tetrabutyl titanate, and the hydrothermal reaction time is 7h at 180°C. The product was taken out and placed in a tube furnace, and calcined at a high temperature of 450°C for 2 hours under a nit...

Embodiment 3

[0043] A method for preparing a carbon-coated titanium nitride nanocolumn array material, the specific steps are as follows:

[0044] (1) Titanium oxide nanocolumn arrays were prepared by seed-assisted hydrothermal reaction method and high-temperature calcination: the graphite sheet was washed and dried, then put into ethanol solution containing 0.8mol / L tetraisopropyl titanate, soaked for 10min Take it out and dry it, put it into a tube furnace, and calcine it at 400°C for 10 minutes under a nitrogen atmosphere. Then put the calcined sample into a 100mL hydrothermal reaction kettle, add a mixed reaction solution containing 30mL 37% concentrated hydrochloric acid, 30mL water and 1.0mL tetrabutyl titanate, and the hydrothermal reaction time is 20h at 150°C, and the reaction ends Finally, the product was taken out and placed in a tube furnace, and calcined at 450°C for 2 hours under a nitrogen atmosphere, the nitrogen concentration was 99.7%, the nitrogen flow rate was 55mL / min,...

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Abstract

The invention provides a carbon-coating titanium based nano array material. The carbon-coating titanium based nano array material comprises a conductive substrate (1), titanium based nano arrays (2) and an unformed carbon layer (3); the titanium based nano arrays (2) are vertically arranged on the surface of the conductive substrate (1) and interconnected to form an integral structure; the unformed carbon layer (3) completely uniformly wraps the surfaces of the titanium based nano arrays (2). The invention further provides a preparation method of the nano array material, and the application of the nano array material in electrochemical energy storage of a super-capacitor. The carbon-coating titanium based nano array material has the characteristic of sequentially-arranged housing-kernel nano structure; the carbon-coating titanium based nano array material can be directly applied to the electrode material of the super-capacitor and has the electrochemical electricity storing performances of quick charging and discharging and high capacitance.

Description

technical field [0001] The invention belongs to the field of preparation of supercapacitor electrode materials, in particular to a method for preparing a carbon-coated titanium-based nano-array material for supercapacitors. Background technique [0002] At present, it is necessary to accelerate the development of efficient, stable and environmentally friendly energy storage devices for the rational and effective use of energy. It is hoped that a new type of energy storage device will appear, which has the characteristics of high energy density and high power density, and can meet the requirements for hybrid power output of future electronic equipment, vehicles and industrial equipment. Supercapacitors have greatly attracted the interest of researchers due to their advantages of fast charge and discharge rate, high power density and long service life, and are expected to realize industrial production in the near future, providing energy support for the rich and colorful life ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/32H01G11/30B82Y30/00
CPCY02E60/13H01G11/32B82Y30/00H01G11/30H01G11/86
Inventor 谢一兵夏池
Owner SOUTHEAST UNIV
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