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Method for applying waste lithium ion battery cathode material to nickel-cobalt battery anode material

A lithium-ion battery and cathode material technology, applied in the field of nickel-cobalt battery anode material preparation, can solve the problems of high cost, high energy consumption, waste, etc., and achieve the effects of low environmental pollution, good cycle life and simple process

Inactive Publication Date: 2012-05-09
NANKAI UNIV +1
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  • Application Information

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Problems solved by technology

However, the above method still has certain deficiencies: First, the cathode material is not comprehensively recycled, and the hydrogen generated in the production is not recycled, which is not only a waste, but also causes a great safety hazard in industrial production
Second, in recycling LiCoO 2 The use of organic solvents in the process will also cause considerable pollution to the environment
In addition, high temperature treatment is used in the recycling process, which consumes a lot of energy and costs

Method used

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  • Method for applying waste lithium ion battery cathode material to nickel-cobalt battery anode material
  • Method for applying waste lithium ion battery cathode material to nickel-cobalt battery anode material

Examples

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Embodiment 1

[0015] as attached figure 1 According to the process, take 10kg lithium-ion battery, cut the battery in water, separate the positive electrode material from other components, put the positive electrode material into a mechanical pulverizer, and put the pulverized material into the hydrogen generator at room temperature. Add 1000ml of NaOH solution with a mass concentration of 30% to the hydrogen generator, and react until no bubbles are generated. The hydrogen generator compresses and stores the generated hydrogen in cylinders after drying, and at the same time prevents the possibility of explosion after the released hydrogen mixes with air. The filtrate is collected, adding mass concentration is 10% hydrochloric acid, adjusts the pH value to be 8-10, obtains white Al(OH) 3 Precipitate, wash and dry the precipitate and save it for other use. The resulting filter residue contains LiCoO 2 , acetylene black and a small amount of conductive agent, dry at 80 degrees. Weigh the ...

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Abstract

The invention relates to a new method for comprehensively recovering LiCoO2 from waste lithium cathode material industrially. The method comprises the following steps of: peeling the waste lithium ion battery material, separating out cathode material, and then mechanically crushing the separated cathode material; placing the crushed material into a hydrogen producing machine; adding excessive NaOH into the hydrogen producing machine for soaking the crushed cathode material at a room temperature; and after the reaction is finished, filtering the reactant, and obtaining the filter residue, i.e. a mixture containing LiCoO2, acetylene black and few conductive agent. After the mixture is dried, the mixture can be used as anode material of a Ni / Co battery, and a good electrochemical property can be shown. The method provided by the invention has the following advantages of simple manufacturing process, easily-obtained raw material, easiness for operation and environmental-friendliness, and provides a new environment-friendly and low-cost production technique for the anode material of the Ni / Co battery.

Description

technical field [0001] The invention relates to the field of preparation of negative electrode materials for nickel-cobalt batteries, and more specifically relates to a method for using waste lithium-ion battery positive electrode materials for nickel-cobalt battery negative electrode materials. Background technique [0002] Lithium-ion battery cathode material is made of active material LiCoO 2 , acetylene black and binder attached to the aluminum foil in a certain proportion. The active material LiCoO 2 Co is a rare metal and is expensive; and after a large number of waste batteries are discarded, a considerable part is directly mixed into the garbage, which not only causes considerable pollution to the environment, but also is a waste of resources; in addition, the waste lithium-ion batteries are positive and negative The surface of the electrode usually contains a small amount of elemental lithium, which is highly flammable and explosive, and there will be considerable...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54H01M4/26
CPCY02E60/124Y02E60/10Y02W30/84
Inventor 王一菁李丽宋大卫苏振馨蔡洪元
Owner NANKAI UNIV
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