Method for regenerating anode materials of waste lithium ion secondary battery

A positive electrode material and secondary battery technology, applied in the field of positive electrode material regeneration, can solve the problems of large chemical reagent consumption, complicated separation process, and easy pollution, and achieve significant economic benefits, simple process, and reduce pollution.

Inactive Publication Date: 2005-02-23
5 Cites 45 Cited by

AI-Extracted Technical Summary

Problems solved by technology

However, the chemical dissolution method needs to consume a large amount of chemical reagents, th...
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The procedure of the recycling method is to cut the used lithium ion battery and take out the positive plate, process the positive plate with heating process to remove the bond between the aluminum foil and the positive pole material, by means of the mechanical or ultrasound shaking, the aluminum foil and the positive pole material are separated, process the positive pole material with the high-temperature handling, the content of the element in the positive pole material is analyzed. Mixing the lithium compound based on the supplement of the cobalt manganese or the nickel. After high-temperature and grinding processing, the positive pole material with excellent performance is recycled.

Application Domain

Waste accumulators reclaimingBattery recycling

Technology Topic

Lithium compoundChemistry +9


  • Method for regenerating anode materials of waste lithium ion secondary battery
  • Method for regenerating anode materials of waste lithium ion secondary battery
  • Method for regenerating anode materials of waste lithium ion secondary battery


  • Experimental program(1)

Example Embodiment

[0021] Example 1:
[0022] The shell of the 17500 type lithium ion secondary battery that failed in the charge-discharge cycle was cut open, the positive electrode piece was sorted out, heated at 400°C for 6 hours in an air atmosphere, and the adhesive was removed; the aluminum foil substrate and the positive electrode were mechanically separated. The materials are separated, and the separated positive electrode material is calcined at 800°C for 5 hours in an air atmosphere to remove conductive agents such as carbon; with Li 2 CO 3 Supplement lithium so that the atomic ratio of lithium and cobalt is 1.05:1.00, mix the positive electrode materials with the adjusted ratio evenly, use a tubular resistance furnace, pre-fire and roast in an air atmosphere, grind through a 38.5 μm sieve to obtain a Reused cathode material LiCoO 2 , the regeneration flow chart of the cathode material of the waste lithium ion secondary battery is as follows figure 1 As shown, the XRD structure of the regenerated cathode material is as follows figure 2 shown.
[0023] The positive electrode material obtained from recycling and regeneration is prepared into a positive electrode, and metal lithium is a negative electrode. The two form a button battery, which is charged to 4.3V at 0.1C and discharged to 3V at 0.2C. image 3 Recycled LiCoO for this method 2 The first-week charge-discharge curve of the positive electrode material shows that the first-time charge-discharge specific capacity of the material is 161.1mA/g, the first-time discharge specific capacity is 150.0mA/g, the first-time charge-discharge efficiency is 93.1%, and the first 10-week charge-discharge efficiency and capacity See Table 1. Raw cathode material LiCoO 2 The XRD analysis results of Figure 4 As shown, the original cathode material LiCoO 2 The charge-discharge curve of Figure 5 shown. The reusable cathode material regenerated by this method has the same structure and similar electrochemical performance as the raw material.
[0024] Charge and discharge times


no PUM

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