A production device and production method for graphene-based composite negative electrode materials

Abstract

The invention relates to a production apparatus for a graphene-based composite negative electrode material. The production apparatus comprises a loading apparatus, a vacuum planetary stirrer arrangedon the downstream of the loading apparatus and a reaction kettle arranged on the downstream of the vacuum planetary stirrer, wherein the reaction kettle also comprises a discharging apparatus. The invention also provides a production method of a graphene-based composite negative electrode material for a lithium ion battery. The production method comprises the following steps: producing a graphene-based composite negative electrode material of a core-shell structure by utilizing the production for the graphene-based composite negative electrode material, producing a reaction raw material by virtue of the vacuum planetary stirrer, and forming the graphene-based composite negative electrode material of the core-shell structure from the reaction raw materials at the reaction temperature of 600to 700 DEG C and a dynamic pressure condition of 10 to 12 hours in the reaction kettle. By virtue of the production device and the production method, the problem of the lithium battery that the cyclelife of the battery is low can be solved, the key performance of the battery is improved, the internal resistance of the battery is reduced, and the heat dissipation problem of a battery cell when inhigh-magnification charging and discharging can be solved.

Description

technical field [0001] The invention relates to the technical field of production and preparation of novel battery materials, in particular to a production device and production method for a graphene-based composite negative electrode material. Background technique [0002] Lithium-ion batteries have brought revolutionary changes to the field of energy storage since their birth, due to their advantages of large specific energy, high operating voltage, low self-discharge rate, small size and light weight, and are widely used in various In portable electronic devices and electric vehicles, however, with the improvement of people's living standards, higher user experience has put forward higher requirements for lithium-ion batteries. Lighter weight, longer cycle life, larger capacity, longer use time, etc. [0003] In order to solve the above problems, it is necessary to find new electrode materials with better performance. The current commercial lithium-ion battery anode mate...

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a production device and production method for graphene-based composite negative electrode materials, through which the production equipment and production method solve the problem of short battery cycle life of lithium batteries, and improve the critical performance of the battery at the same time Specifically, it is to reduce the internal resistance of the battery, and at the same time, improve the heat dissipation of the battery cell during high-rate charge and discharge.