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Co(OH)2/TiO2 nanotube array composite material and preparation method thereof

A technology of nanotube array and composite material, which is applied in the field of Co2/TiO2 nanotube array composite material and its preparation method, which can solve the problems of high pressure, achieve the effect of increased specific capacitance, strong interface binding force, and shortened preparation process

Active Publication Date: 2019-02-01
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the very small diameter of the nanotubes, the pressure of the tubes is very high, and the naturally deposited active substances cannot be infiltrated.

Method used

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  • Co(OH)2/TiO2 nanotube array composite material and preparation method thereof
  • Co(OH)2/TiO2 nanotube array composite material and preparation method thereof
  • Co(OH)2/TiO2 nanotube array composite material and preparation method thereof

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Embodiment 1

[0040] A Co(OH) 2 / TiO 2 The preparation method of nanotube array composite material comprises the following steps:

[0041] Step 1: Preparation of TiO by anodizing 2 nanotube array

[0042] (1) The pure titanium metal sheet is first polished with No. 5 sandpaper, chemically corroded for 5 minutes, and rinsed with water for 15 minutes to obtain the pretreated pure titanium metal sheet;

[0043] Among them, the reagents used for chemical corrosion are: HF, HNO 3 and H 2 O mixture; wherein, by volume, HF is 10%, HNO 3 is 40%, and the balance is water.

[0044] (2) Take the pretreated pure titanium metal sheet as the anode and pure iron as the cathode, add electrolyte, and conduct electrolysis to obtain electrolyzed TiO 2 Nanotube array; wherein, the electrolysis voltage is 20V, the electrolysis time is 1h, and the electrolyte is NH 4 A mixed aqueous solution of F and glycerol, in which, by mass percentage, NH 4 F is 0.5%, glycerol is 20%, and the balance is water;

[0...

Embodiment 2

[0061] A Co(OH) 2 / TiO 2 The preparation method of nanotube array composite material comprises the following steps:

[0062] Step 1: Preparation of TiO by anodizing 2 nanotube array

[0063] (1) The pure titanium metal flakes are first polished with No. 5 sandpaper, chemically corroded for 6 minutes, and rinsed with water for 15 minutes to obtain the pretreated pure titanium metal flakes;

[0064] Among them, the reagents used for chemical corrosion are: HF, HNO 3 and H 2 O mixture; wherein, by volume, HF is 5%, HNO 3 is 45% and the balance is water.

[0065] (2) Take the pretreated pure titanium metal sheet as the anode and pure iron as the cathode, add electrolyte, and conduct electrolysis to obtain electrolyzed TiO 2 Nanotube array; wherein, the electrolysis voltage is 10V, the electrolysis time is 2h, and the electrolyte is NH 4 A mixed aqueous solution of F and glycerol, in which, by mass percentage, NH 4 F is 0.6%, glycerol is 30%, and the balance is water;

[...

Embodiment 3

[0080] A Co(OH) 2 / TiO 2 The preparation method of nanotube array composite material comprises the following steps:

[0081] Step 1: Preparation of TiO by anodizing 2 nanotube array

[0082] (1) The pure titanium metal sheet is first polished with No. 5 sandpaper, chemically corroded for 3 minutes, and rinsed with water for 10 minutes to obtain the pretreated pure titanium metal sheet;

[0083] Among them, the reagents used for chemical corrosion are: HF, HNO 3 and H 2 O mixture; wherein, by volume, HF is 5%, HNO 3 is 45% and the balance is water.

[0084] (2) Take the pretreated pure titanium metal sheet as the anode and pure iron as the cathode, add electrolyte, and conduct electrolysis to obtain electrolyzed TiO 2 Nanotube array; wherein, the electrolysis voltage is 30V, the electrolysis time is 0.5h, and the electrolyte is NH 4 A mixed aqueous solution of F and glycerol, in which, by mass percentage, NH 4 F is 0.3%, glycerol is 15%, and the balance is water;

[0...

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Abstract

The invention provides a Co(OH)2 / TiO2 nanotube array composite material and a preparation method thereof, and belongs to the field of supercapacitor electrode material development. The Co(OH)2 / TiO2 nanotube array composite material takes TiO2 nanotubes as a base material, and the TiO2 nanotube carries Co(OH)2 nanoparticles, wherein the Co(OH)2 nanoparticles are embedded into a TiO2 nanotube arrayto form a tube-particle combination nano composite structure. The preparation method of the material comprises the steps: performing the ultrasonic embedding of the TiO2 nanotube array into CoCl2 aqueous solution, and adding ammonia for action, wherein the obtained material can be taken as a supercapacitor material, thereby achieving the integration of a current collector and a conductive agent inthe electrode material. Electrons can be quickly transmitted to an active substance, and the excessive expansion of the active substance can be constrained. The specific capacitance of the doped TiO2nanotubes can be greatly increased.

Description

technical field [0001] The invention relates to the field of research and development of supercapacitor electrode materials, in particular to a Co(OH) 2 / TiO 2 Nanotube array composite material and preparation method thereof. Background technique [0002] Supercapacitors, also known as electrochemical capacitors, are an efficient and practical new energy storage device between traditional capacitors and batteries, with higher energy density than traditional capacitors, higher power density than batteries and longer use. life. In addition, supercapacitors also have the advantages of fast charging and discharging rate, wide operating temperature range, economical and environmental protection, so supercapacitors have a wide range of applications in portable electronic devices, hybrid electric vehicles, and defense technology. Electrode material is one of the two key factors that determine the performance of supercapacitors, and the study of electrode materials has also becom...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/30H01G11/46B82Y30/00B82Y40/00C25D11/26
CPCB82Y30/00B82Y40/00C25D11/26H01G11/24H01G11/30H01G11/46Y02E60/13
Inventor 王鸣查志飞李思瑶安康王迎波
Owner LIAONING TECHNICAL UNIVERSITY
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