Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for rapid preparation of anodized titanium nanotube array film

A technology of anodizing titanium and nanotube arrays, which is applied in the field of electrochemistry, can solve problems such as runaway electron current, uneven electric field distribution, and inability to continue anodizing, and achieve the effect of convenient control and rapid preparation

Active Publication Date: 2022-03-18
NANJING UNIV OF SCI & TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when anodized under high electric field conditions, the electronic current is easily out of control, and the electrical breakdown of the oxide film occurs.
In addition, when the titanium oxide film is prepared by the traditional electrochemical anodic oxidation method, the titanium sheet is directly connected to the positive electrode of the power supply as the anode. Due to the uneven distribution of the electric field on the titanium sheet, electrical breakdown will also occur at the interface between the titanium sheet and the electrolyte. phenomenon, anodizing cannot continue

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for rapid preparation of anodized titanium nanotube array film
  • A method for rapid preparation of anodized titanium nanotube array film
  • A method for rapid preparation of anodized titanium nanotube array film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] First, a titanium foil with a purity of 99.5%, a thickness of 200 μm, and a size of 12 cm×1 cm was immersed in a polishing solution composed of hydrofluoric acid, nitric acid, and water at a volume ratio of 1:1:2 for 20–30 s to remove the titanium surface. oxide film. Then rinse with deionized water. The polished titanium sheet is folded into an inverted "U" shape, and the two ends of the titanium sheet are respectively inserted into two independent electrolytic cells. Insert a graphite plate as an electrode into the two electrolytic cells respectively, and the two graphite plates are parallel to the two ends of the inverted "U"-shaped titanium plate, and the distance is equal, both of which are 0.5 cm. Two graphite plates are connected to the power lines. The electrolytic cell where the graphite plate connected to the negative electrode of the power supply is recorded as the anode electrolytic cell, an ethylene glycol solution containing 0.3 wt% ammonium fluoride and...

Embodiment 2

[0022] Except that the electrolyte in the cathodic electrolytic cell was 1 M sulfuric acid solution, other steps were the same as in Example 1.

Embodiment 3

[0024] Except that the electrolyte in the cathodic electrolytic cell was 1 M sodium hydroxide solution, other steps were the same as in Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for rapidly preparing an anodized titanium nanotube array film. The steps are as follows: folding the polished titanium sheet into a "U" shape, inserting the first end of the titanium sheet into the first electrolytic cell, and The second end of the first electrolytic cell is inserted into the second electrolytic cell, the first electrolytic cell is provided with a first graphite plate electrode, the second electrolytic cell is provided with a second graphite plate electrode, and the two graphite plate electrodes are respectively connected to the first end and the second end of the titanium sheet Parallel and equal distance, energized for constant voltage anodizing treatment. In the present invention, under the condition of closed bipolar electrochemical anodic oxidation, the titanium sheet is rapidly, uniformly and stably formed into a regular titanium oxide nanotube array film in a fluorine-containing electrolyte, and the growth rate of the nanotube can reach 2.0 μm min ‑1 Above, this method can control the growth rate of the oxide film by changing the ammonium fluoride concentration of the electrolyte in the two electrolytic cells and the size of the titanium sheet area in the cathodic electrolytic cell, and the oxide film grown under high current density is not easy Breakdown occurs.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry and relates to a method for preparing an anodized titanium nanotube array film, in particular to a method for preparing an anodized titanium nanotube array film with rapid growth and complete structure. Background technique [0002] Titanium oxide has become a research hotspot in many fields such as photocatalysis, sensors, lithium-ion batteries, and biomedical equipment due to its advantages of environmental protection, non-toxicity, easy availability of raw materials, and good chemical stability. In particular, the in-situ vertical growth of titanium oxide nanotube array films on titanium metal substrates by anodic oxidation has the advantages of oriented alignment, high specific surface area, and unique electron transport paths, and has become a promising choice for many devices including supercapacitors. ideal electrode material. [0003] At present, the rate of preparing titanium ox...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/26
CPCC25D11/26
Inventor 周沁怡张健鹏但雨欣王安成朱绪飞宋晔
Owner NANJING UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com