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Solution for problem of jellylike sizing agent after material mixing of ternary cathode materials

A jelly-like technology for positive electrode materials, which is applied in the field of solving the problem of jelly-like slurry after mixing ternary positive electrode materials, can solve the problems of waste of manpower and material resources, waste of raw materials, etc., to achieve no waste of raw materials, save manpower and material resources, and reduce losses Effect

Inactive Publication Date: 2016-03-02
百顺松涛(天津)动力电池科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the slurry is in the shape of jelly after absorbing water, it can only be scrapped, which wastes raw materials and causes a certain waste of manpower and material resources.
In the prior art, there is no method that can process, recycle and reuse the jelly-like slurry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for solving the problem of jelly-like slurry after mixing ternary cathode materials, comprising the following steps:

[0022] Step A: Put the jelly-like slurry after water absorption into the oven, adjust the temperature to be higher than the boiling point of the binder and NMP, the drying temperature is 450°C, the drying time is 40 hours, the oven is vacuumed, the pressure 0.8MPa, drying;

[0023] Step B: Put the dried product into a ball mill for the first ball milling at a speed of 750r / min, the ball milling time is 4 hours, and pass through a 400-mesh sieve;

[0024] Step C: Carry out the second ball milling, the rotating speed is 800r / min, the ball milling time is 4 hours, and pass through a 400-mesh sieve;

[0025] Step D: Carry out ball milling for the third time, the rotating speed is 850r / min, the ball milling time is 4 hours, and pass through a 400-mesh sieve;

[0026] Step E: The product after three times of ball milling is blended into the normal ...

Embodiment 2

[0028] A method for solving the problem of jelly-like slurry after mixing ternary cathode materials, comprising the following steps:

[0029] Step A: Put the jelly-like slurry after absorbing water into the oven, adjust the temperature to be higher than the boiling point of the binder and NMP, the drying temperature is 500°C, the drying time is 30 hours, the oven is vacuumed, the pressure 0.7MPa, drying;

[0030] Step B: Put the dried product into a ball mill for the first ball milling at a speed of 800r / min, the ball milling time is 5 hours, and pass through a 400-mesh sieve;

[0031] Step C: Carry out the second ball milling, the rotating speed is 850r / min, the ball milling time is 5 hours, and pass through a 400-mesh sieve;

[0032] Step D: Carry out ball milling for the third time, the rotating speed is 900r / min, the ball milling time is 5 hours, and pass through a 400-mesh sieve;

[0033] Step E: The product after three times of ball milling is blended into the normal p...

Embodiment 3

[0035] A method for solving the problem of jelly-like slurry after mixing ternary cathode materials, comprising the following steps:

[0036] Step A: Put the jelly-like slurry after water absorption into the oven, adjust the temperature to be higher than the boiling point of the binder and NMP, the drying temperature is 480°C, the drying time is 48 hours, the oven is vacuumed, the pressure 0.9MPa, drying;

[0037] Step B: Put the dried product into a ball mill for the first ball milling at a speed of 780r / min, the ball milling time is 4.5 hours, and pass through a 400-mesh sieve;

[0038] Step C: Carry out the second ball milling, the rotating speed is 830r / min, the ball milling time is 4.5 hours, and pass through a 400-mesh sieve;

[0039] Step D: Carry out the third ball milling, the rotating speed is 880r / min, the ball milling time is 4.5 hours, and pass through a 400-mesh sieve;

[0040] Step E: The product after ball milling three times was mixed into the normal positiv...

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PUM

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Abstract

The invention discloses a solution for the problem of a jellylike sizing agent after the material mixing of ternary cathode materials. The solution comprises the following steps: putting the jellylike sizing agent after water absorption in a drying oven for drying, carrying out vaporization separation on a binding agent and NMP, then carrying out ball-milling and sieving, then carrying out ball-milling and sieving again on sieved powder repeatedly three times, and putting obtained powder in a large batch of cathode materials for material mixing; the influence of problematic powder is weakened by using the large batch of main materials, and the electrochemical property of a final battery is not influenced. The solution has the advantages and beneficial effects that the jellylike sizing agent after water absorption can be reused by adopting the solution, so that the raw materials are not wasted, manpower and material resources are saved, and losses are reduced.

Description

technical field [0001] The invention belongs to the field of lithium battery production, and in particular relates to a method for solving the problem that the slurry of ternary positive electrode materials is jelly-like after mixing. Background technique [0002] At present, during the mixing process of positive electrode materials, the slurry sometimes absorbs water. After absorbing water, the slurry becomes jelly-like, unable to flow, and cannot be coated smoothly. Bring certain difficulties to production. The usual mixing process is: adding NMP, stirring, sieving, and discharging. If the slurry can be coated and the adhesion is no problem, it can be used. If the slurry is in the shape of jelly after absorbing water, it can only be scrapped, which wastes raw materials and also causes a certain waste of manpower and material resources. In the prior art, there is no method that can process, recycle and reuse the jelly-like slurry. Contents of the invention [0003] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M10/052
CPCH01M4/364H01M10/052Y02E60/10
Inventor 陈勇邓辉
Owner 百顺松涛(天津)动力电池科技发展有限公司
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