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Mechanochemistry recycling method of waste lithium battery cathode material

A technology for waste lithium batteries and positive electrode materials, which is applied in the field of mechanochemical recycling of waste lithium battery positive electrode materials, can solve the problems of difficult disposal of subsequent waste liquid, loss of metal resources, large environmental load, etc., and achieves low cost, excellent magnetic properties, The effect of reducing recovery costs

Active Publication Date: 2016-02-03
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems of equipment corrosion, serious loss of metal resources, difficulty in disposing of subsequent waste liquid, and large environmental load in the process of recycling valuable metals in waste lithium batteries, the present invention creatively proposes a method based on the advantages of the mechanochemical method. Iron powder and sodium chloride are used as additives to ball mill waste lithium batteries to selectively recover lithium metal, and at the same time directionally synthesize cobalt ferrite, a magnetic functional material

Method used

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  • Mechanochemistry recycling method of waste lithium battery cathode material
  • Mechanochemistry recycling method of waste lithium battery cathode material
  • Mechanochemistry recycling method of waste lithium battery cathode material

Examples

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Embodiment 1

[0025] A method for mechanochemical recycling of waste lithium battery cathode materials, specifically comprising the following steps:

[0026] according to figure 1 Flowchart, take the waste lithium battery, disassemble to get the metal case, organic separator, positive electrode material and negative electrode material. The positive electrode material is calcined at high temperature and sieved to obtain LiCoO 2 powder. Weigh 1.0gLiCoO 2 Powder, by LiCoO 2 , Fe powder and NaCl with a mass ratio of 1:2.5:5, put them into a ball mill tank after mixing, weigh stainless steel balls according to the ball-to-material ratio of 80:1 and place them in the tank, and use an elastic O-shaped ball between the ball mill tank and the ball mill cover. ring seal. Set the ball milling speed to 600 rpm, and the ball milling time to 12 hours. After the ball milling, rinse the balls and the milling tank with 50 mL of deionized water, and then use a vacuum filtration device to separate the f...

Embodiment 2

[0028] A method for mechanochemical recycling of waste lithium battery cathode materials, specifically comprising the following steps:

[0029] according to figure 1 Flow chart, take waste mobile phone lithium battery, disassemble to get metal case, organic separator, positive electrode material and negative electrode material. The positive electrode material is calcined at high temperature and sieved to obtain LiCoO 2 powder. Weigh 10gLiCoO 2 Powder, LiCoO 2 , Fe powder and NaCl are mixed at a mass ratio of 1:2.5:5, put into a ball mill tank after mixing, weigh stainless steel balls according to the ball-to-material ratio of 50:1 and place them in the tank, and use elastic O-shaped balls between the ball mill tank and the ball mill cover. ring seal. Set the ball milling speed to 600 rpm, and the ball milling time to 15 hours. After the ball milling, rinse the balls and the milling tank with 500 mL of deionized water, and then use a vacuum filtration device to separate t...

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Abstract

The invention discloses a method of treating a waste lithium battery by adopting a mechanochemistry method, selectively recycling metal lithium and meanwhile directionally preparing a cobalt-based magnetic functional material, belonging to a new technology of treating solid wastes in the field of environmental protection and comprehensive utilization of resources. The method particularly comprises five procedures of discharging, splitting, ball milling, lithium recycling and calcining. The method is characterized in that a dry ball milling mode is adopted, so that materials and an assistant generate a solid phase reaction and no waste liquid is produced; by controlling the reaction process, the metal lithium is selectively recycled, and a magnetic material is directionally synthetized from metal cobalt. The method is simple and convenient to operate, low in cost, high in recovery rate, and mild in reaction condition, the assistant is cheap and easy to get, a prepared cobalt ferrite is excellent in magnetism, strong acids and strong oxidizers are not used all the way, and the method is a green and environment-friendly waste lithium battery recycling method.

Description

technical field [0001] The invention relates to a method for recycling waste lithium batteries by using a mechanochemical method, which belongs to the new technology of solid waste treatment in the field of environmental protection and resource comprehensive utilization, and is especially suitable for the environment-friendly resource recycling of various lithium and cobalt-containing waste materials use. Background technique [0002] In recent years, due to the increasingly prominent problems of environmental pollution and energy crisis, new energy vehicles and power batteries have developed by leaps and bounds. Power batteries include lead-acid batteries, nickel-metal hydride power batteries and lithium-ion power batteries, among which lithium-ion power batteries with high energy density and cycle characteristics are known as the best development direction for power batteries in the future. With the continuous upgrading of electronic and electrical products and the contin...

Claims

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Application Information

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IPC IPC(8): H01M10/54H01M10/052
CPCH01M10/54H01M10/052Y02W30/84Y02E60/10C22B7/005C22B26/12C22B23/021
Inventor 张付申王萌萌
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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