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

Nickel-cobalt-manganese multi-metal@ graphitized carbon@ hierarchical pore porous carbon material and preparation and application thereof in lithium-sulfur battery

A porous carbon material, graphitized carbon technology, which is applied in lithium batteries, carbon preparation/purification, battery electrodes, etc., can solve the problems of high sulfur loading and low liquid sulfur ratio, and achieve high capacity and high cycle performance Effect

Active Publication Date: 2020-05-19
CENT SOUTH UNIV
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the industrialization process of lithium-sulfur batteries is facing severe problems of high sulfur load and low liquid sulfur ratio.

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
  • Nickel-cobalt-manganese multi-metal@ graphitized carbon@ hierarchical pore porous carbon material and preparation and application thereof in lithium-sulfur battery
  • Nickel-cobalt-manganese multi-metal@ graphitized carbon@ hierarchical pore porous carbon material and preparation and application thereof in lithium-sulfur battery
  • Nickel-cobalt-manganese multi-metal@ graphitized carbon@ hierarchical pore porous carbon material and preparation and application thereof in lithium-sulfur battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] The waste ternary power battery LiNi 0.5 co 0.2 mn 0.3 o 2 Disassemble, take out the positive electrode side, peel off the ternary active material from the current collector, dry it and crush it, heat-treat 4 kg of the crushed powder at 600°C for 3 hours in an oxygen atmosphere, and add the obtained powder to 20L0. 01M dilute acid can be processed under 350rpm high-energy stirring for 5 hours to obtain nano-spherical particles. The main particle size range is 10-200nm measured by laser particle size. When the pH of the solution is close to neutral, add 50g of PVP to obtain the ternary nano-sphere dispersion. Mix 5 kg of ternary nanosphere dispersion with 5 kg of starch, stir evenly in a planetary ball mill, and control the stirring temperature at 80 degrees Celsius. After the slurry was dried at 120°C, it was carbonized in a nitrogen carbonization furnace at 1200°C for 3 hours; after the product was crushed and sieved, the ternary nano-template was washed away with 0...

Embodiment 2

[0084] Compared with Example 1, the only difference is that the waste ternary power battery LiNi is used 0.6 co 0.2 mn 0.2 o 2 Batteries are treated as follows:

[0085] The waste ternary power battery LiNi 0.6 co 0.2 mn 0.2 o 2 Disassemble, take out the positive electrode side, strip the ternary active material from the current collector, dry it and break it, heat-treat 4 kg of the broken powder at 600°C for 3 hours in an oxygen atmosphere, and add a certain amount of the obtained powder 0.01M dilute acid (20L) can be treated with 350rpm high-energy stirring for 5 hours to obtain nano-spherical particles, and when the pH of the solution is close to neutral, add 50g of PVP to obtain a ternary nano-sphere dispersion. Mix 5 kg of ternary nanosphere dispersion with 5 kg of starch, stir evenly in a planetary ball mill, and control the stirring temperature at 80 degrees Celsius. After the slurry was dried at 120°C, it was carbonized in a nitrogen carbonization furnace at 12...

Embodiment 3

[0088] Compared with Example 1, the only difference is that the waste ternary power battery LiNi is used 1 / 3 co 1 / 3 mn 1 / 3 o 2 Batteries are treated as follows:

[0089] The waste ternary power battery LiNi 1 / 3 co 1 / 3 mn 1 / 3 o 2 Disassemble, take out the positive electrode side, strip the ternary active material from the current collector, dry it and break it, heat-treat 4 kg of the broken powder at 600°C for 3 hours in an oxygen atmosphere, and add a certain amount of the obtained powder 0.01M dilute acid (20L) can be treated with 350rpm high-energy stirring for 5 hours to obtain nano-spherical particles, and when the pH of the solution is close to neutral, add 50g of PVP to obtain a ternary nano-sphere dispersion. Mix 5 kg of ternary nanosphere dispersion with 5 kg of starch, stir evenly in a planetary ball mill, and control the stirring temperature at 80°C. After the slurry was dried at 120°C, it was carbonized in a nitrogen carbonization furnace at 1200°C for 3 hou...

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
pore sizeaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of waste electrode material recovery and electrode material preparation, and particularly relates to a nickel-cobalt-manganese multi-metal@ graphitized carbon@ hierarchical pore porous carbon material and a method for preparing the nickel-cobalt-manganese multi-metal@ graphitized carbon@ hierarchical pore porous carbon material through a waste positive electrodematerial. Nanoscale pore channels in the carbon material are communicated with each other; the material is catalyzed and locally graphitized by transition metal; and meanwhile, highly-dispersed nickel, cobalt and manganese are embedded in the material, rich reaction interfaces and lithium ion transmission channels are provided, the polarity of a carbon substrate can be improved through multi-metaldoped porous carbon, conversion of polysulfide is catalyzed through metal particles, and then the specific discharge capacity, the rate and the cycle performance of the lithium-sulfur battery prepared from the positive electrode active material are remarkably improved.

Description

technical field [0001] The invention relates to the field of battery electrode material preparation, in particular to a lithium-sulfur battery cathode material. Background technique [0002] With the increase of energy demand and the continuous development of the electronic market and electric vehicle market, lithium-ion batteries are favored by people because of their safety, environmental protection, high specific energy and good electrochemical performance. Also because of this, a large number of lithium-ion batteries are produced and consumed. In order to protect the environment, save resources, and be able to recycle resources, it is necessary to develop waste lithium-ion battery recycling technology. Lithium-ion cathode ternary materials contain a variety of valuable metal elements, which have great recycling value. However, the traditional wet recycling process is expensive, and how to recover valuable elements at low cost and efficiently or waste treatment and reus...

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 Applications(China)
IPC IPC(8): H01M4/36H01M4/38H01M4/62H01M10/052H01M10/54C01B32/05C01B32/205
CPCC01B32/05C01B32/205H01M4/366H01M4/38H01M4/62H01M4/628H01M10/052H01M10/54H01M2004/021H01M2004/028Y02E60/10Y02W30/84
Inventor 张治安郑景强赖延清王涛胜覃富荣洪波张凯李劼
Owner CENT SOUTH UNIV
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