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Method for preparing high-voltage cathode material lithium-nickel-manganese-oxygen battery

A positive electrode material, lithium-nickel-manganese-oxygen technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of not realizing comprehensive applications at the same time, and achieve the effect of promising market prospects, suitable for batch processing, and high added value

Active Publication Date: 2011-08-17
CHERY AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is also only the method of chemical precipitation separation, which realizes the recovery of Mn and Li compounds, but does not realize comprehensive application at the same time

Method used

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  • Method for preparing high-voltage cathode material lithium-nickel-manganese-oxygen battery
  • Method for preparing high-voltage cathode material lithium-nickel-manganese-oxygen battery

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Embodiment 1

[0041] Embodiment 1: Discharge 2 waste and old soft-packaged lithium manganese oxide power lithium ion batteries (one monomer is 5Ah) with special discharge equipment, remove the waste and old lithium manganate power battery of monomer soft-package by means of a shearing machine, take out the battery core, The outer packaging aluminum-plastic composite film is directly recycled. Crush the cell to 1cm with a vertical rotary grinder 2 About the size, soak the crushed cell fragments in N, N-dimethylformamide at a temperature of 60 degrees for 1 hour, accompanied by mechanical stirring and intermittent ultrasonic oscillation.

[0042] Then filter and separate the soaked cells from the solvent, wash and filter the filter residue with distilled water several times, dry at 120°C for 6 hours, vibrate and sieve, and get clean Al, Cu, Ni foils and diaphragms on the sieve, which can be directly sent to The smelting plant recycles the metal; the mixed powder of gray-black lithium mangana...

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Abstract

The invention discloses a method for preparing a high-voltage cathode material lithium-nickel-manganese-oxygen battery. The method comprises a plurality of steps of: dismantling an electric core, immersing the electric core, filtering and separating, preparing acidic filtrate, preparing coprecipiate, and preparing a lithium-nickel-manganese-oxygen battery. The method has the advantages that: 1, comprehensive recycling of Mn, Ni, Li, Al and Cu in waste and old LiMnO batteries, lithium nickel batteries and lithium nickel-manganese batteries is realized, Mn or Ni and Li elements are not needed to be separated, and the new good-performance high-voltage cathode material lithium-nickel-manganese-oxygen battery is synthesized directly; 2, the process is simple, the method is suitable for mass processing, the cost is low, the obtained battery has an impressive market prospect, and the additional value is high; and 3, the recycling rate of manganese and nickel metal in the battery is over 96 percent, and the recycling rate of lithium carbonate is 78 percent.

Description

technical field [0001] The invention relates to the technical field of battery materials, in particular to a method for preparing lithium nickel manganese oxide, a high-voltage positive electrode material. Background technique [0002] With the explosive development of 3C electronic products and various electric tools, the demand for secondary batteries has increased dramatically. The lithium-ion battery has the characteristics of being environmentally friendly, high specific energy, high voltage platform, long cycle life, small self-discharge, and no memory effect. It is far superior to lead-acid, Ni-Cd, and Ni-MH batteries. It is used in military, The civil field has gained wider application. Large-capacity power lithium-ion batteries represented by positive electrode materials such as lithium iron phosphate, ternary, and lithium manganese oxide are widely used in electric bicycles, electric motorcycles, and electric vehicles due to their advantages such as good safety, l...

Claims

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Application Information

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IPC IPC(8): H01M4/1391
CPCY02E60/122Y02E60/12Y02E60/10
Inventor 刘志远
Owner CHERY AUTOMOBILE CO LTD
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