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Method for producing regenerated electrode active material for lithium ion battery, method for producing metal ion-containing solution, and lithium ion battery
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An electrode active material, lithium-ion battery technology, applied in the direction of active material electrode, electrode manufacturing, battery electrode, etc., can solve the problem of complex process and other problems
Inactive Publication Date: 2022-04-15
APB CORP
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Problems solved by technology
[0014] In this technology, there are problems such as complicated steps up to the separation and recovery of the active material
Method used
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no. 1 approach
[0591] The first embodiment of the method for producing a positive electrode for a lithium ion battery is characterized by including a step of mixing a positive electrode active material extracted from a lithium ion battery with lithium and / or a lithium-containing compound.
[0592] The first embodiment of the method for producing a positive electrode for a lithium ion battery includes a step of mixing a positive electrode active material extracted from a lithium ion battery with lithium and / or a lithium-containing compound.
[0593] The battery capacity of the positive active material is increased or recovered by mixing the positive active material with lithium and / or a lithium-containing compound to dope the positive active material with lithium and / or lithium ions.
[0594] The method for extracting the positive electrode active material from the lithium ion battery is not particularly limited, and a method corresponding to the structure of the lithium ion battery from which...
Embodiment
[0832] Next, although an Example demonstrates this invention concretely, this invention is not limited to an Example in the range which does not deviate from the summary of this invention. In addition, unless otherwise specified, a part means a weight part, and a % means a weight%. In addition, in the following examples, the first electrode is used as a positive electrode, and the second electrode is used as a negative electrode.
[0833] [Examples of the first aspect of the production method of the regenerated electrode active material for lithium ion batteries and related matters]
manufacture example 1-1
[0835]
[0836] Using a twin-screw extruder, under the conditions of 190°C, 100rpm, and a residence time of 5 minutes, 65 parts of the base resin [Sumitomo Noblen FL6737 (random polypropylene) manufactured by Sumitomo Chemical Co., Ltd., melting point 130°C]], conductive 30 parts of a permanent filler [DENKA BLACK Li-400 manufactured by Denka Company Limited] and 5 parts of a dispersant were melt-kneaded to obtain a resin current collector material.
[0837] The resin current collector A having a film thickness of 100 μm was obtained by extruding the obtained resin current collector material from a T-die and rolling with a cooling roll whose temperature was adjusted to 50° C.
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Abstract
The present invention is a method for producing a regenerated electrode active material for a lithium ion battery, the method being characterized by comprising a removal step for removing a first electrode active material from a lithium ion battery which is provided with a power storage element comprising a first electrode, a second electrode, a third electrode, a fourth electrode, a fifth electrode, and a sixth electrode, the first current collector being a first resin current collector. A first electrode active material layer which is provided with the first current collector and which is formed on the first current collector and which is composed of a first electrode composition containing the first electrode active material; a second electrode provided with a second current collector and a second electrode active material layer formed on the second current collector and comprising a second electrode composition containing a second electrode active material; and a separator disposed between the first electrode active material layer and the second electrode active material layer.
Description
technical field [0001] The present invention relates to a method for producing a regenerated electrode active material for a lithium ion battery, a method for producing a solution containing metal ions, and a lithium ion battery. Background technique [0002] Lithium ion (secondary) batteries have been widely used in various applications in recent years as high-capacity, small-sized and lightweight secondary batteries. A typical lithium ion battery is configured such that a positive electrode active material layer containing a positive electrode active material and an electrolyte solution and a negative electrode active material layer similarly containing a negative electrode active material and an electrolyte solution are accommodated in a container with a separator interposed therebetween. [0003] As the material of the positive electrode active material, nickel oxide or cobalt oxide is often used. Metals such as nickel and cobalt are expensive and burden the environment...
Claims
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