Preparation method of titanium dioxide negative electrode material coated with surfactant serving as carbon source

A surfactant and titanium dioxide technology, applied in the direction of active material electrodes, negative electrodes, battery electrodes, etc., can solve the problems of insufficient contact, uneven carbon layer, etc., and achieve improved electronic conductivity, wide application value, and excellent electrochemical performance. performance effect

Inactive Publication Date: 2017-04-26
NANKAI UNIV
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the carbon sources of carbon coating are mainly concentrated in electrically neutral molecules such as glucose (sucrose) and polymers. These carbon source molecules are discretely dispersed around the tita

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
  • Preparation method of titanium dioxide negative electrode material coated with surfactant serving as carbon source
  • Preparation method of titanium dioxide negative electrode material coated with surfactant serving as carbon source
  • Preparation method of titanium dioxide negative electrode material coated with surfactant serving as carbon source

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1:

[0019] A method for preparing a titanium dioxide anode material coated with a surface active agent as a carbon source, which utilizes the electrostatic attraction between the cationic surface active agent and the negatively charged titanium dioxide precursor titanate, and is prepared by a hydrothermal method and subsequent high-temperature calcination To remove carbon-coated titanium dioxide, the steps are as follows:

[0020] 1) Add 0.5g of cetyltrimethylammonium bromide (CTAB) into 15mL of deionized water and stir to completely dissolve; take 1.0g of tetrabutyl titanate and dissolve in a stainless steel autoclave containing 20mL of absolute ethanol, Stir until dissolved;

[0021] 2) Slowly add the CTAB-containing solution prepared above into the reaction kettle, mix well, put it in a constant temperature oven for hydrothermal reaction for 12 hours, wash the product with deionized water and absolute ethanol, centrifuge and dry to obtain titanium dioxide powder ...

Example Embodiment

[0025] Example 2:

[0026] A method for preparing a titanium dioxide anode material coated with a surface active agent as a carbon source, which utilizes the electrostatic attraction between the cationic surface active agent and the negatively charged titanium dioxide precursor titanate, and is prepared by a hydrothermal method and subsequent high-temperature calcination To remove carbon-coated titanium dioxide, the steps are as follows:

[0027] 1) Add 0.5g of cetyltrimethylammonium bromide (CTAB) into 15mL of deionized water and stir to completely dissolve; take 1.0g of tetrabutyl titanate and dissolve in a stainless steel autoclave containing 20mL of absolute ethanol, Stir until dissolved;

[0028] 2) Slowly add the CTAB-containing solution prepared above into the reaction kettle, mix well, put it in a constant temperature oven for hydrothermal reaction for 12 hours, wash the product with deionized water and absolute ethanol, centrifuge and dry to obtain titanium dioxide powder ...

Example Embodiment

[0033] Example 3:

[0034] A method for preparing a titanium dioxide anode material coated with a surface active agent as a carbon source, which utilizes the electrostatic attraction between the cationic surface active agent and the negatively charged titanium dioxide precursor titanate, and is prepared by a hydrothermal method and subsequent high-temperature calcination To remove carbon-coated titanium dioxide, the steps are as follows:

[0035] 1) Add 0.5g of cetyltrimethylammonium chloride (CTAC) into 15mL of deionized water and stir until completely dissolved; Dissolve 1.0g of tetrabutyl titanate in a stainless steel autoclave containing 20mL of absolute ethanol, Stir until dissolved;

[0036] 2) Slowly add the CTAB-containing solution prepared above into the reaction kettle, mix well, put it in a constant temperature oven for hydrothermal reaction for 12 hours, wash the product with deionized water and absolute ethanol, centrifuge and dry to obtain titanium dioxide powder ;

[...

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 preparation method of a titanium dioxide negative electrode material coated with a surfactant serving as a carbon source. According to the preparation method, the surfactant is taken as the carbon source, and carbon-coated titanium dioxide is prepared by a hydrothermal method and subsequent high-temperature calcination; and modulation and control of a carbon coating layer of the titanium dioxide are realized under the action of electrostatic force between the surfactant and a titanium dioxide precursor titanic acid radical carrying negative charges. The preparation method has the advantages that the problems of non-uniform carbon layer covering and loose contact in a conventional carbon-coated titanium dioxide negative electrode material are solved, and the electronic conductivity of the titanium dioxide is enhanced, thereby enhancing the important electrochemical performance such as the specific capacity, rate capability and cycling stability of the material. The preparation method has a very high practical value and a good application prospect.

Description

technical field [0001] The invention relates to a method for preparing a titanium dioxide negative electrode material coated with a surfactant as a carbon source, and belongs to the technical field of electrochemical energy materials. Background technique [0002] Energy is an important material basis for human survival and development. As an efficient energy storage system, lithium-ion batteries have become a research hotspot and are widely used in electronic devices and electric vehicles, but they are always constrained by the scarcity of lithium resources and rising prices. Sodium, by contrast, is abundant in the ocean and is cheap and readily available. In addition, sodium element and lithium element belong to the same main group, have similar properties, and the charging and discharging mechanism is basically the same. Therefore, the research and development of sodium-ion batteries brings unlimited potential to the future of secondary batteries, and brings new opportu...

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): H01M4/36H01M4/48H01M4/62H01M10/054
CPCH01M4/366H01M4/48H01M4/625H01M10/054H01M2004/027Y02E60/10
Inventor 王一菁袁华堂李云蔚陈程成
Owner NANKAI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap