Graphene battery conductive agent

A graphene, conductive agent technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of decreased electrode capacity, high price, difficult dispersion, etc., to improve low temperature performance, improve electrical conductivity and cycle life, improve dispersion effect

Inactive Publication Date: 2019-08-23
SHANDONG XINGHUO SCI TECH INSTITYTE
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Lithium-ion batteries in the prior art mainly use conductive graphite, acetylene black and carbon nanotubes as conductive agents. Acetylene black is a chain composed of spherical amorphous carbon particles. It is currently the most widely used conductive agent with low price. , but in order to achieve the purpose of enhancing the mutual contact between electrode active materials, t

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A graphene battery conductive agent of the present invention, each raw material composition is according to mass ratio: graphene 5 parts; Polyacrylonitrile fiber 6 parts; Triethylenetetramine 2 parts; Ethanol 60 parts; Acetone 10 parts; Butyrolactone 10 parts 1 part of terbium oxide; 0.5 part of titanium carbide; 5 parts of fluoroethylene carbonate.

[0015] A preparation method for a graphene battery conductive agent, comprising the following processing steps:

[0016] 1) Mix 5 parts of graphene and 6 parts of polyacrylonitrile fiber with 2 parts of triethylenetetramine, 60 parts of ethanol, 10 parts of acetone, and 10 parts of butyrolactone, and ultrasonically disperse for 10-25 minutes to obtain a mixed solution A ;

[0017] 2) Add 1 part of terbium oxide and 0.5 part of titanium carbide to the mixed solution A obtained in step 1), and stir at a temperature of 30-45°C for 30-60 minutes; obtain the mixed solution B;

[0018] 3) Add 5 parts of fluoroethylene carbonat...

Embodiment 2

[0020] A graphene battery conductive agent of the present invention, each raw material composition is by mass ratio: graphene 9 parts; Polyacrylonitrile fiber 12 parts; Triethylenetetramine 2.5 parts; Ethanol 75 parts; Acetone 18 parts; Butyrolactone 15 parts 3 parts of terbium oxide; 0.8 parts of titanium carbide; 6 parts of fluoroethylene carbonate.

[0021] A preparation method for a graphene battery conductive agent, comprising the following processing steps:

[0022] 1) Mix 9 parts of graphene and 12 parts of polyacrylonitrile fiber with 2.5 parts of triethylenetetramine, 75 parts of ethanol, 18 parts of acetone, and 15 parts of butyrolactone. After ultrasonic dispersion for 10-25 minutes, a mixed solution A is obtained. ;

[0023] 2) Add 3 parts of terbium oxide and 0.8 parts of titanium carbide to the mixed solution A obtained in step 1), and stir at a temperature of 30-45°C for 30-60 minutes; obtain the mixed solution B;

[0024] 3) Add 6 parts of fluoroethylene carb...

Embodiment 3

[0026] A graphene battery conductive agent of the present invention, each raw material composition is by mass ratio: graphene 15 parts; Polyacrylonitrile fiber 15 parts; Triethylenetetramine 3 parts; Ethanol 80 parts; Acetone 25 parts; Butyrolactone 18 parts 5 parts of terbium oxide; 1 part of titanium carbide; 8 parts of fluoroethylene carbonate.

[0027] A preparation method for a graphene battery conductive agent, comprising the following processing steps:

[0028] 1) Mix 15 parts of graphene and 15 parts of polyacrylonitrile fiber with 3 parts of triethylenetetramine, 80 parts of ethanol, 25 parts of acetone, and 18 parts of butyrolactone. After ultrasonic dispersion for 10-25 minutes, a mixed solution A is obtained. ;

[0029] 2) Add 5 parts of terbium oxide and 1 part of titanium carbide to the mixed solution A obtained in step 1), and stir at a temperature of 30-45°C for 30-60 minutes; obtain the mixed solution B;

[0030] 3) Add 8 parts of fluoroethylene carbonate to...

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 belongs to the technical field of graphene batteries, and particularly relates to a graphene battery conductive agent. The graphene battery conductive agent comprises the following raw materials in parts by mass: 5-15 parts of graphene, 6-15 parts of polyacrylonitrile fiber, 2-3 parts of triethylene tetramine, 60-80 parts of ethyl alcohol, 10-25 parts of acetone, 10-18 parts of butyrolactone, 1-5 parts of terbium oxide, 0.5-1 parts of titanium carbide and 5-8 parts of fluoroethylene carbonate. The graphene battery conductive agent can reduce the cost, can improve the dispersion of graphene, can improve the conductivity and the cycle life, and can improve the low-temperature performance.

Description

technical field [0001] The invention belongs to the technical field of graphene batteries, in particular to a conductive agent for graphene batteries. Background technique [0002] As a new type of high-energy secondary power supply, lithium-ion secondary batteries have the advantages of large specific energy, stable discharge voltage, high voltage, good low-temperature performance, no pollution, superior safety performance, long storage and working life, and high utilization rate. [0003] Lithium-ion batteries in the prior art mainly use conductive graphite, acetylene black and carbon nanotubes as conductive agents. Acetylene black is a chain composed of spherical amorphous carbon particles. It is currently the most widely used conductive agent with low price. , but in order to achieve the purpose of enhancing the mutual contact between electrode active materials, the amount of addition required is large, resulting in a decrease in electrode capacity; carbon nanotubes are ...

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): H01M4/62H01M10/0525
CPCH01M4/624H01M4/625H01M10/0525Y02E60/10
Inventor 车春玲
Owner SHANDONG XINGHUO SCI TECH INSTITYTE
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