Nitrogen-rich doped porous structural carbon material and preparation method and application thereof

A porous carbon material and porous structure technology, applied in the field of porous materials, can solve the problems of complex preparation process of high-capacity negative electrode materials, limited specific capacity of negative electrode materials, and difficulty in large-scale production, so as to improve electrochemical performance and lithium storage performance , short time-consuming effect

Inactive Publication Date: 2017-06-30
GUILIN UNIV OF ELECTRONIC TECH
View PDF2 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to improve the problem of limited specific capacity and cycle instability of the negative electrode material by increasing the nitrogen content and specific surface area of ​​the negative electrode material of the battery, and a

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
  • Nitrogen-rich doped porous structural carbon material and preparation method and application thereof
  • Nitrogen-rich doped porous structural carbon material and preparation method and application thereof
  • Nitrogen-rich doped porous structural carbon material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0040] A preparation method of a nitrogen-rich doped porous structure carbon material is as follows:

[0041] Step (1) Dissolve 20 g of phenol into 4.26 g of NaOH solution (20 wt%), stir at 50 °C for 10 min, then add 35.4 g of formaldehyde solution (37 wt %) dropwise, and react at 75 °C for 60 min . After cooling, adjust the pH to neutral with 1 M dilute hydrochloric acid, then put it in a vacuum oven at 40°C for drying, and dissolve the final product in ethanol to prepare a water-soluble phenolic resin solution with a concentration of 20 wt%.

[0042] Step (2) Dissolve 1 g of F127 and 2 g of guanine in a mixed solution of 10 g of deionized water and 20 g of absolute ethanol, then add 5 g of the phenolic resin ethanol solution described in step (1) to the above solution , stirred at 35 °C for 30 min, after the reaction, the light yellow solution was introduced into a petri dish, dried at 50 °C for 6 h, and then placed in an oven at 100 °C for 24 h;

[0043] Step (3) Grind th...

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 provides a nitrogen-rich doped porous structural carbon material which is prepared by mixing water soluble phenolic resin, a surfactant F127 and guanine by a solvent evaporation self assembly method. The preparation method comprises the steps: (1) obtaining a nitrogen-containing precursor from the surfactant F127, guanine and the water soluble phenolic resin through the evaporation self-assembly process; (2) carrying out pyrolysis of the nitrogen-containing precursor to obtain nitrogen-rich doped modified porous carbon material; and (3) washing the obtained porous carbon material, filtering, and drying to obtain the nitrogen-rich doped porous structural carbon material. With an application of the material as a negative electrode material for a lithium ion battery, when the current density is 100 mA*g<-1>, the specific capacity value is 607 mAh*g<-1>; with an application of the material as a super capacitor material, when the current density is 0.5 A*g<-1>, the specific capacitance is 218 F*g<-1>. The prepared carbon material has the advantages of large specific surface area, excellent electrochemical performance, simple preparation process and easy mass production, and has wide application prospects in electrochemistry and other fields.

Description

technical field [0001] The invention relates to the technical field of porous materials, in particular to a nitrogen-rich doped porous structure carbon material and its preparation method and application. Background technique [0002] Lithium-ion batteries are widely used in various daily energy storage components due to their high energy density, fast charging and discharging, easy portability, and high voltage compared to dry batteries. As an important lithium storage body of lithium-ion batteries, the negative electrode material is prone to collapse with the intercalation and extraction of lithium ions during the charging and discharging process, resulting in continuous attenuation of capacity, reducing the original service life of lithium-ion batteries, and greatly limiting its capacity. applications in large-scale energy storage. As an important part of lithium-ion battery electrode materials, carbon materials have aroused widespread interest among researchers due to t...

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): H01M4/587H01M4/36H01G11/32H01G11/36C01B32/15
CPCH01G11/32H01G11/36H01M4/362H01M4/587Y02E60/10Y02E60/13
Inventor 褚海亮邵春风邱树君邹勇进向翠丽孙立贤徐芬
Owner GUILIN UNIV OF ELECTRONIC TECH
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