Unlock instant, AI-driven research and patent intelligence for your innovation.

In-situ carbon cladded hydrogenated network-shaped titanium oxide nanowire material, and preparation method and application thereof

A technology of titanium oxide and nanowires, which is applied in the field of direct methanol fuel cell catalyst material preparation, can solve the problems of poor electrical conductivity and low electrochemical active area of ​​titanium oxide, and achieve the effects of large specific area, controllable shape and simple operation

Inactive Publication Date: 2018-11-23
HEFEI UNIV OF TECH
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an in-situ carbon-coated hydrogenated network titanium oxide nanowire material and its preparation method and application. The main problem to be solved is to improve the current problems of poor electrical conductivity and low electrochemical active area of ​​titanium oxide.

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
  • In-situ carbon cladded hydrogenated network-shaped titanium oxide nanowire material, and preparation method and application thereof
  • In-situ carbon cladded hydrogenated network-shaped titanium oxide nanowire material, and preparation method and application thereof
  • In-situ carbon cladded hydrogenated network-shaped titanium oxide nanowire material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Firstly, the titanium foam was ultrasonically cleaned in acetone, ethanol, and deionized water for 15 minutes, and then vacuum-dried at 60°C with a vacuum degree of 45Pa. Put 1.2g of NaOH into a beaker filled with 30ml of water, and stir until fully dissolved to form a 1mol / L NaOH solution. Put the titanium foam into a 50ml polytetrafluoroethylene liner, pour 1mol / L NaOH solution into the liner, and put the liner into a stainless steel reaction kettle. The entire stainless steel reactor was placed in a forced air drying oven at 220°C for 24 hours, and then cooled to room temperature. The obtained precursor was rinsed three times with deionized water, soaked in 8% dilute hydrochloric acid for 5 hours, and then rinsed three times with deionized water. The obtained precursor was placed in a tube furnace and raised to 600° C. in air at a heating rate of 10° C. / min, and then kept warm for 2 hours to obtain network-like titanium oxide nanowires. The networked titanium oxide...

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 relates to a preparation method of an in-situ carbon cladded hydrogenated network-shaped titanium oxide nanowire material. Foam titanium serves as a titanium source and a substrate, a network-shaped titanium oxide precursor is obtained in a sodium hydroxide solution through a hydrothermal method firstly, and the network-shaped titanium oxide precursor is treated through dilute hydrochloric acid, and then calcined in air to obtain a network-shaped titanium oxide nanowire; then the network-shaped titanium oxide nanowire is subjected to surface modification under the hydrogen argonatmosphere to obtain a hydrogenated network-shaped titanium oxide nanowire; and finally, the hydrogenated titanium oxide nanowire is cladded with a carbon nanometer thin layer with glucose and methaneas carbon sources, and thus a three-dimensional network-shaped nanowire catalyst carrier is provided. The preparation method is easy to operate, the morphology is controllable, the specific surface area of the obtained material is large, the problem of poor conductivity of titanium oxide is solved, the active site of the load PT and the electrochemical active area are increased, and the catalystactivity is improved.

Description

technical field [0001] The invention belongs to the technical field of preparation of catalyst materials for direct methanol fuel cells, and in particular relates to an in-situ carbon-coated hydrogenated network titanium oxide nanowire material, a preparation method and an application. Background technique [0002] Compared with proton exchange membrane fuel cells, direct methanol fuel cells have the characteristics of low-temperature rapid start-up, high energy density, clean and environmentally friendly fuel, high safety, and simple battery structure. They are widely used in the fields of automobiles, portable electronic products, and military mobile instruments. The potential is huge. The activity of the methanol oxidation reaction depends on the catalytic activity of the catalyst on the electrode. Although the traditional catalyst carrier-carbon black has more active sites, the corrosion is severe when the methanol fuel cell is running. In addition, carbon-based corros...

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
IPC IPC(8): H01M4/92H01M8/1011B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/925H01M4/926H01M8/1011Y02E60/50
Inventor 吴玉程郭亚男张勇汤利梅崔接武王岩舒霞
Owner HEFEI UNIV OF TECH