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

Positive electrode single-mixed paste and preparation method thereof

A slurry mixing and positive electrode technology, applied in battery electrodes, electrical components, circuits, etc., can solve the problems of reducing slurry mixing efficiency, complex operation process, and high equipment requirements, and achieve the effects of simple raw material management, uniform coating, and improved performance.

Active Publication Date: 2018-01-16
HEFEI GUOXUAN HIGH TECH POWER ENERGY
View PDF5 Cites 4 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
  • Positive electrode single-mixed paste and preparation method thereof
  • Positive electrode single-mixed paste and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The present invention proposes a positive electrode single-mix slurry, the preparation method of which is as follows:

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

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

Embodiment 2

[0031] The present invention proposes a positive electrode single-mix slurry, the preparation method of which is as follows:

[0032] (1) 8g dispersant Add 47g of N-methylpyrrolidone, stir at a speed of 1200r / min for 20min until completely dissolved, and obtain glue;

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

Embodiment 3

[0035] The present invention proposes a positive electrode single-mix slurry, the preparation method of which is as follows:

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

[0037] (2) Add 50g of polyvinylidene fluoride and 100g of Ketjen black to the glue prepared in step (1), and disperse at a high speed of 4000r / min for 50min 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
Login to View More

Abstract

The invention discloses positive electrode single-mixed paste and a preparation method thereof, and relates to the technical field of a lithium ion battery. The positive electrode single-mixed paste comprises the following raw materials of a dispersing agent, a conductive agent, a binding agent and a solvent, wherein the mass percent of the dispersing agent in the single-mixed paste accounts for 5-20%. The dispersing agent is dissolved in the solvent, the binding agent and the conductive agent are dispersed, so that low viscosity of the single-mixed paste can be achieved on the basis of high solid content, the electrode coating process is facilitated, the prepared single-mixed paste is directly mixed with an active substance, the paste mixing time is greatly reduced, the production efficiency is improved, the investment cost of production line equipment is reduced, and the production cost is reduced; and meanwhile, the raw material is easy to manage, the uniform coating of an electrodeplate is facilitated, the battery performance is improved, and the finished rate and the consistency of the electrode are finally improved.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a positive electrode single-mix slurry and a preparation method thereof. Background technique [0002] The successful application of lithium-ion batteries in the automotive field marks another leap forward in the new energy industry. Battery production efficiency and consistency is an important topic in 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 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 reduce...

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): H01M4/62
CPCY02E60/10
Inventor 李婷婷王祖华张宏立
Owner HEFEI GUOXUAN HIGH TECH POWER ENERGY