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

Production manufacturing method of carbon powder

A manufacturing method and carbon technology, applied in the field of carbon powder M production and manufacturing, can solve the problems of reducing material capacity, complex processing technology and high processing cost, and achieve the effects of improving material specific capacity, simple process method, mature and stable effect

Active Publication Date: 2010-09-01
顾向宏
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 2. In the past, high-end products were mostly treated with complex coating. The main representative product is mesocarbon microspheres MCMB, which reduces the material capacity, and the pre-processing technology is relatively complicated and the processing cost is high.

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
  • Production manufacturing method of carbon powder
  • Production manufacturing method of carbon powder
  • Production manufacturing method of carbon powder

Examples

Experimental program
Comparison scheme
Effect test

example 3

[0087] The prolongation of time finds that the coke conversion carbon process meets the requirements more than example three;

[0088] (6) Three kinds of materials through the above processes are crushed with a crusher, and classified processing is carried out;

[0089] (7) Then use the airflow to grind coarse, medium and fine processing step by step; in the grinding process, it is found that with the gradual increase of the graphitization temperature, the closer the carbon powder is to the ideal index;

[0090] (8) Three kinds of materials are respectively carried out particle size shaping to be layered, sub-ellipse, sub-circle;

[0091] (9) Mix the layered, oval-like and round-like materials in a ratio of 40:30:30 and stir them fully;

[0092] (10) Carry out the high temperature carbonization treatment of at least 2000°C for 1 day to the carbon powder obtained in process 9; the surface of the carbon powder screened after carbonization is more ideal than that in Example 3; c...

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 carbon powder which is characterized by mixing petroleum coke, pitch coke, coal tar pitch coke according to the ratio 50+ / -5: 30+ / -5: 20+ / -5 after carefully chosen, calcining the mixture at 1200-1400 DEG C, finally processing the mixture into materials with different morphology such as flake, ellipse-like, circular-like after breaking up, screening,pressing, roasting, graphitizing, mechanical processing and treating, doping and spheriodizing and carbonization treating at high temperature, finally obtaining good quality of carbon powder M which has advantages of ordered morphology, high specific capacity, long circulation life with safety and reliability. The art for producing carbon powder M cathode material is simple, maturely and stable, which is suitable for popularization and application in the lithium battery industry.

Description

technical field [0001] The invention relates to the technical field of a method for producing carbon powder M. Background technique [0002] Lithium-ion batteries have a relatively complete industrial chain. At present, there are few domestic manufacturers of industrialized high-performance lithium-ion battery anode materials, and they mainly use natural graphite, ordinary graphite, and natural graphite for coating treatment. Although artificial graphite has good stability, its capacity is low, and its specific surface area and tap density are not ideal. The specific capacity of MCMB can only reach 320mAh / g, and the compacted density of the pole piece can only reach 1.45g / cm 3 , and the processing performance is relatively complex, the process is difficult to control, the cost is high, and it is difficult to meet the demand. [0003] The carbon powder M is specially produced for the lithium battery industry. Petroleum coke, pitch coke, and coal tar pitch coke are carefully...

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): C01B31/04H01M4/38C10B57/00
CPCY02E60/10
Inventor 顾向宏
Owner 顾向宏
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