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A kind of multi-layer gel material and preparation method for lithium battery recycling

A multi-layer gel and lithium battery technology, applied in the field of metal ion adsorption materials, can solve the problems of cumbersome procedures, low degree of continuity, and great harm to the body, and achieve simple preparation process, low degree of continuity, and reduce secondary pollution Effect

Active Publication Date: 2020-08-28
罗帮亮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the defects of high energy consumption, cumbersome process, low degree of continuity, inability to actively screen metal ions, acid-base separation, and serious pollution for the current lithium-ion battery recycling

Method used

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  • A kind of multi-layer gel material and preparation method for lithium battery recycling
  • A kind of multi-layer gel material and preparation method for lithium battery recycling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035](1) First weigh montmorillonite, chitosan and activated carbon according to the mass ratio of 1:1:1, divide the agar gel into three parts, the volume ratio of the three agar gels is 3:2:1, and the montmorillonite Stone is mixed with 3 volumes of agar gel, chitosan is mixed with 2 volumes of agar gel, activated carbon is mixed with 1 volume of agar gel, and after high-speed stirring, three kinds of agar gel adsorption materials that are uniformly dispersed are obtained. The particle diameter of montmorillonite is 300 orders, porosity 40%, the particle diameter of described chitosan is 600 orders, porosity 60%, the particle diameter of described activated carbon is 1200 orders, porosity 85%;

[0036] (2) Mix the above three agar gel adsorption materials with the adhesive silica gel, and stir evenly to obtain a viscous adsorption material;

[0037] (3) Coat the above three kinds of viscous gel adsorption materials on the surface of high-porosity reticular porous silicon res...

Embodiment 2

[0041] (1) First weigh montmorillonite, chitosan and activated carbon according to the mass ratio of 1:1:1, divide the agar into three parts with a volume ratio of 3:2:1, mix the montmorillonite with 3 volumes of agar, Chitosan is mixed with 2 volumes of agar, activated carbon is mixed with 1 volume of agar, and stirred at a high speed to obtain three uniformly dispersed gel adsorption materials. The particle size of the montmorillonite is 300 mesh, and the porosity is 45%. The particle diameter of described chitosan is 600 orders, and porosity is 65%, and the particle diameter of described gac is 1600 orders, and porosity is 87%;

[0042] (2) Mix the three kinds of gel adsorption materials with the adhesive starch, and stir evenly to obtain a viscous adsorption material;

[0043] (3) The three kinds of viscous gel adsorption materials are respectively coated on the surface of the high-porosity reticular porous silicon. The pore diameter of the high-porosity reticular porous s...

Embodiment 3

[0047] (1) First weigh montmorillonite, chitosan and activated carbon according to the mass ratio of 1:1:1, divide the gelatin into three parts with a volume ratio of 3:2:1, montmorillonite and 3 volumes of gelatin Mixing, chitosan is mixed with 2 volumes of gelatin, activated carbon is mixed with 1 volume of gelatin, and stirred at a high speed to obtain three uniformly dispersed gel adsorption materials, the particle size of the montmorillonite is 350 mesh, and the pores Rate 45%, the particle diameter of described chitosan is 700 orders, porosity 70%, the particle diameter of described activated carbon is 1500 orders, porosity 88%;

[0048] (2) Mix the three kinds of gel adsorption materials with the adhesive starch, and stir evenly to obtain a viscous adsorption material;

[0049] (3) The three kinds of viscous gel adsorption materials are respectively coated on the surface of high-porosity reticular porous silicon, the pore diameter of the high-porosity reticular porous s...

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Abstract

The invention provides a multilayer gel material for lithium battery recycling and a preparation method. The gel material is of a multilayer porous netty structure comprising a montmorillonite gel layer, a chitosan gel layer and an activated carbon gel layer from top to bottom, and layers are supported by high-porosity netty porous silicon in a framework manner and isolated mutually. The multilayer gel material has gradient pore diameter distribution itself, can filter molecules different in size in solutions in a graded manner and can realize controlled adsorption filtering of copper, nickeland cobalt ions in the process of recycling lithium ion batteries by applying different electrochemical potentials, so that secondary pollution is reduced. The multilayer gel material is simple in preparation process, low in cost and suitable for large-scale and continuous production.

Description

technical field [0001] The invention relates to the field of metal ion adsorption materials, in particular to a multi-layer gel material used for recovery and reuse of lithium batteries and a preparation method. Background technique [0002] Lithium-ion battery is a secondary battery (rechargeable battery), which generally uses lithium-containing materials with small atomic radius as electrodes, and is mainly used in electric bicycles, electric vehicles, electric motorcycles, electric tools, solar photovoltaic and wind power storage Energy system, smart grid energy storage system, mobile communication base station, electric power, chemical industry, hospital backup UPS, EPS power supply, security lighting, portable mobile power supply, notebook computer, electric toys, mine safety equipment, digital products and other fields. Compared with nickel-cadmium and nickel-metal hydride batteries, lithium-ion batteries have many advantages such as high voltage, large specific energy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/00H01M10/54
CPCB01J13/0052B01J13/0065H01M10/54Y02W30/84
Inventor 陈庆廖健淞
Owner 罗帮亮
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