Method for recycling anode material of lithium ion battery

A technology for lithium ion batteries and cathode materials, which is applied in the field of cathode material recycling of lithium ion batteries, can solve the problems of easily destroying the specific active structure of cathode materials, single metal and its compounds, and physical or chemical pollution, etc., and achieves environmental friendliness. , High production efficiency and obvious economic benefits

Inactive Publication Date: 2010-05-12
DONGGUAN AMPEREX TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] At present, the recovery of cathode materials for lithium-ion batteries is mainly for certain selected elements, such as cobalt, copper and other precious metal elements. The recycling process not only easily destroys the specific active structure of cathode materials, but also uses physical or chemical methods. Pollution is serious , the recovered substances are mainly single metals and their compounds, and there is a large waste

Method used

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  • Method for recycling anode material of lithium ion battery
  • Method for recycling anode material of lithium ion battery
  • Method for recycling anode material of lithium ion battery

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Embodiment 1: Slurry recovery method.

[0035] First, the dry slurry (which can be one or more of lithium cobaltate, lithium nickel cobalt manganese, lithium nickel cobalt aluminum, lithium iron phosphate, conductive carbon) is crushed into particles with a particle size of less than 10mm, and then paved Put it on a plate and put it in a high-temperature furnace (such as a muffle furnace) for high-temperature baking. The temperature of the muffle furnace can be raised to 400-600°C first, or the temperature can be raised to 400-600°C after the powder is put in. During the baking process, a small amount of air can be introduced into the oven to create an oxygen-enriched atmosphere. . After baking, take out the processed powder and cool it down, then pulverize it in a pulverizer for 10-60 minutes, and then sieve the powder with a 10-mesh to 200-mesh sieve machine, and the powder that can pass through a 200-mesh sieve is recyclable Qualified powder can be directly package...

Embodiment 2

[0036] Embodiment 2: Lithium cobalt oxide pole piece recovery method.

[0037] First of all, the lithium cobalt oxide pole pieces to be recovered are used or not with clamps (such as image 3 Shown) placed in a container (such as a plate) after finishing, and then put the plate into a high-temperature furnace (such as a muffle furnace) for high-temperature baking. The temperature of the muffle furnace can be raised to 400-600°C first, or the temperature can be raised to 400-600°C after putting in the materials. During the baking process, a small amount of air can be fed into the high-temperature furnace or not to create an oxygen-enriched atmosphere. After the baking is finished, take out the pole pieces to cool down, then use a mixer to add or not add zirconium glass beads for powder removal, and then sieve the processed pole piece powder with a 10-mesh to 200-mesh powder sieving machine and discharge it. The powder that can pass through the 200-mesh sieve is recyclable qual...

Embodiment 3

[0039] Embodiment 3: Lithium nickel cobalt manganese pole piece recovery method.

[0040] The process parameters and process are the same as those in Example 2, and will not be repeated here.

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Abstract

The invention discloses a method for recycling anode material of lithium ion battery, which comprises the following steps: 1) putting crushed anode dry size or an anode plate to be recycled in a container, placing the container in a high temperature furnace for high temperature baking at 400-600 DEG C, afterwards taking out the processed powdery material or the anode plate and cooling for standby use; and 2) pulverizing the powdery material or the anode plate baked at high temperature in a pulverizer, de-powdering the pulverized anode plate, and finally sieving the powdery material to obtain qualified anode powdery material for recycling. The inventive method for recycling anode material of lithium ion battery carries out high temperature treatment on the anode material to cause the adhesive to decompose to lose adhesion function, but can not produce side effects on active substances and electrochemical properties thereof, the recycled active substances can be reused into production after simply sieving, and the invention has the advantages of simple technique, high production efficiency, obvious economic benefit, etc.

Description

technical field [0001] The invention relates to a method for recovering positive electrode materials of lithium ion batteries. Background technique [0002] Lithium-ion batteries have the advantages of high energy density, high working voltage, wide application temperature range and long cycle life, so they are widely used as power sources for various mobile devices, and are also used in aviation, aerospace, navigation, automobiles, medical equipment and other fields. Gradually replace the traditional battery. [0003] The positive electrode materials of lithium ion batteries are mainly lithium cobaltate, lithium nickel cobalt manganese, lithium nickelate, lithium nickel cobalt aluminum and lithium iron phosphate, etc. These materials contain precious metals or strategic metals such as cobalt and lithium. In a lithium-ion battery, the cost of the positive electrode material accounts for about 30-40% of the total cost of the battery. Therefore, it is of great significance to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54B09B3/00
CPCY02E60/12Y02W30/84
Inventor 梅铭赖旭伦陈卫赵丰刚许瑞柳娜
Owner DONGGUAN AMPEREX TECH
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