Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of positive electrode single mixed slurry and preparation method thereof

A technology of mixing slurry and positive electrode, applied in battery electrodes, structural parts, electrical components, etc., can solve the problems of complex operation process, high equipment requirements, lower slurry mixing efficiency, etc., to achieve simple management of raw materials, uniform coating, and improved production. The effect of efficiency

Active Publication Date: 2021-01-29
HEFEI GUOXUAN HIGH TECH POWER ENERGY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Many patents disclose the preparation method of positive electrode slurry, which adopts the traditional slurry mixing method, the operation process is complicated and the equipment requirements are high, and the slurry mixing efficiency is reduced to a certain extent

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
  • A kind of positive electrode single mixed slurry and preparation method thereof
  • A kind of positive electrode single mixed slurry and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]The present invention provides a single mixed positive electrode slurry, and its preparation method is as follows:

[0028](1) 100g dispersantAdd it to 350g of N-methylpyrrolidone, stir for 10min at a speed of 1400r / min until all is dissolved to obtain a glue;

[0029](2) Add 250 g of polyvinylidene fluoride and 300 g of carbon nanotubes into the glue prepared in step (1), and disperse at a high speed of 4000 r / min for 60 minutes to obtain a stable and uniformly dispersed single-mix slurry.

Embodiment 2

[0031]The present invention provides a single mixed positive electrode slurry, and its preparation method is as follows:

[0032](1) Put 8g of dispersantAdd 47g of N-methylpyrrolidone and stir for 20min at a speed of 1200r / min until all is dissolved to obtain a glue;

[0033](2) Add 19.8 g of polyvinylidene fluoride and 26 g of conductive carbon black to the glue prepared in step (1), and disperse at a high speed of 4500 r / min for 40 minutes to obtain a stable and uniformly dispersed single-mix slurry.

Embodiment 3

[0035]The present invention provides a single mixed positive electrode slurry, and its preparation method is as follows:

[0036](1) Put 50g of dispersantAdd it to 800g of N-methylpyrrolidone, stir for 15min at a speed of 1400r / min until all is dissolved to obtain a glue;

[0037](2) Add 50 g of polyvinylidene fluoride and 100 g of Ketjen Black into the glue prepared in step (1), and disperse at a high speed of 4000 r / min for 50 minutes to obtain a stable and uniformly dispersed single-mix slurry.

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
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a positive electrode single-mix slurry and a preparation method thereof, relates to the technical field of lithium ion batteries, and is composed of the following raw material components: a dispersant, a conductive agent, a binder and a solvent; the dispersant accounts for a single-mix slurry The mass percentage is 5‑20%. In the present invention, the dispersant is first dissolved in the solvent, and then the binder and the conductive agent are added to disperse, so that the single-mix slurry can achieve low viscosity on the basis of high solid content, which is beneficial to the electrode coating process and will The obtained single-mixed slurry is directly mixed with the active material, which greatly reduces the mixing time, improves production efficiency, reduces production line equipment investment costs, reduces production costs, and simplifies raw material management, which is conducive to uniform coating of electrode sheets and improves battery life. performance, ultimately improving electrode yield and consistency.

Description

Technical field[0001]The invention relates to the technical field of lithium ion batteries, in particular to a positive electrode single mixed slurry and a preparation method thereof.Background technique[0002]The successful application of lithium-ion batteries in the automotive field marks another leap in the new energy industry. Battery production efficiency and consistency is an important subject of lithium-ion battery research. Regarding the single-mix slurry, not only its product performance is excellent, but also it has great advantages in reducing the production cost of the battery, improving the production efficiency of the pole piece, and reducing the equipment investment cost of the new production line.[0003]Many patents disclose the preparation method of the positive electrode slurry, which adopts the traditional mixing method, the operation process is complicated and the equipment requirements are high, and the mixing efficiency is reduced to a certain extent.Summary of 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
Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/62
CPCY02E60/10
Inventor 李婷婷王祖华张宏立
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY