Method and device for simultaneously catalytic-generating hydrogen in waste battery recycling process

A technology for used batteries and catalysts, which is used in battery recycling, waste collector recycling, chemical instruments and methods, etc., can solve the problems of safety, unreported, and low content in the battery recycling area, and achieves wide applicability and danger. The effect of low sexuality and moderate reaction rate

Pending Publication Date: 2019-04-05
CHINA AUTOMOTIVE TECH & RES CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the patent of hydrogen production from waste batteries, and there is no report on the patent of hydrogen production catalyst prepared from electrode materials.
[0004] In addition, in the prior art, a small amount of hydrogen gas is produced during the battery recycling process. Because the content is small, there is no relevant collection device, which causes a certain amount of waste, and when the amount of hydrogen continues to accumulate, it will damage the battery. There are hidden safety hazards in the recycling area, and there is an urgent need for a device that is suitable for recycling waste batteries and can also collect hydrogen

Method used

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  • Method and device for simultaneously catalytic-generating hydrogen in waste battery recycling process
  • Method and device for simultaneously catalytic-generating hydrogen in waste battery recycling process
  • Method and device for simultaneously catalytic-generating hydrogen in waste battery recycling process

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Select waste and used lithium iron phosphate battery cells from Tianjin Lishen Battery Co., Ltd. for manual disassembly, separate the positive electrode sheet, negative electrode sheet, etc., take 5g of negative electrode material fragments, open the first valve, and put them into the reactor through the feed port. Add 50ml of 60°C hot water to the coarse filter, stir until the black substance on the surface of the negative electrode separates, open the second valve, and the black slurry flows into the first storage tank. Remove the coarse strainer and collect the copper foil on top. Take 0.15g Ni(NO 3 )2 Put into 20ml deionized water, stir until dissolved to get Ni(NO 3 ) 2 solution, open the first storage tank, add the solution to the first storage tank, impregnate overnight under stirring conditions, then stir and evaporate the slurry to dryness, dry the evaporated matter at 80°C for 8h, and calcinate at 500°C under nitrogen atmosphere 5h, a Ni / C catalyst was obta...

Embodiment 2

[0042] Select CATL's waste ternary lithium-ion battery cells, manually disassemble them, separate the positive electrode sheet, negative electrode sheet, etc., take 5g of negative electrode material fragments, open the first valve, and put them into the coarse filter screen in the reactor through the feed port. Add 50ml of 70°C hot water, stir until the black substance on the surface of the negative electrode separates, open the second valve, and the black slurry flows into the first storage tank. Remove the coarse strainer and collect the copper foil on top. Take 0.15g Ni(NO 3 ) 2 Put into 20ml deionized water, stir until dissolved to get Ni(NO 3 ) 2 Solution, open the first storage tank, add the solution into the first storage tank, impregnate overnight under the condition of stirring, then stir and evaporate the slurry to dryness, dry the evaporated product at 90°C for 8h, and calcinate at 500°C under nitrogen atmosphere 5h, a Ni / C catalyst was obtained.

[0043] Open ...

Embodiment 3

[0045] Select the waste ternary lithium-ion battery unit of AVIC Lithium Battery, manually disassemble, separate the positive electrode sheet, negative electrode sheet, etc., take 5g of negative electrode material fragments, open the first valve, and put them into the coarse filter in the reactor through the feed port , add 50ml of 80°C hot water, stir until the black substance on the surface of the negative electrode separates, open the second valve, and the black slurry flows into the first storage tank. Remove the coarse strainer and collect the copper foil on top. Take 0.25g Ni(NO 3 ) 2 Put into 20ml deionized water, stir until dissolved to get Ni(NO 3 ) 2 solution, open the first storage tank, add the solution into the first storage tank, impregnate overnight under stirring conditions, then stir and evaporate the slurry to dryness, dry the evaporated matter at 100°C for 8h, and calcinate at 500°C under nitrogen atmosphere 5h, a Ni / C catalyst was obtained.

[0046] Op...

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Abstract

The invention relates to a method and device for simultaneously catalytic-generating hydrogen in a waste battery recycling process. The method mainly comprises the following steps: (1) extracting graphite: breaking a negative electrode sheet and placing in a reactor, adding hot water, wherein a water level is higher than a primary filter screen, to obtain graphite slurry; (2) preparing a catalyst:through an excessive volume impregnation method, enabling the graphite fallen from a negative electrode to be prepared as the Ni/C catalyst, wherein nickel salt needs to be added in process; (3) catalytic-generating hydrogen: placing the Ni/C catalyst and a positive electrode sheet on the primary filter screen, and adding high-concentration dissolution liquid for dissolving and generating hydrogen, wherein a liquid level is higher than filter screen; and (4) recycling a residual substance: recycling the catalyst on the primary filter screen, wherein the slurry is a positive electrode materialand aluminiferous solution which can be used for a next step of a battery recycling technology, and a collected gas is the hydrogen. The method aims to deeply exploit potentialities of a waste battery, recycle the negative electrode graphite, and simultaneously catalytically prepare the clean energy hydrogen, and a normal flow and recycling efficiency of battery recovery are not affected.

Description

technical field [0001] The invention relates to a method and a device for simultaneously catalyzing and producing hydrogen during the recovery process of waste batteries, in particular to a device and method for recovering and reusing positive and negative electrode materials of waste lithium-ion batteries while preparing hydrogen, and belongs to the field of resource utilization of waste batteries. Background technique [0002] With the changes in the energy structure and the support of national regulations and policies, new energy vehicles such as pure electric vehicles (EV), plug-in hybrid electric vehicles (PHEV), and fuel cell vehicles (FCV) are developing rapidly. Hydrogen is the energy needed for fuel cell vehicles. It has a high calorific value and is the cleanest fuel. It emits only water and does not cause any pollution to the environment. Research on hydrogen production and storage has never stopped at home and abroad. Hydrogen is considered to be one of the futur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/08H01M10/54
CPCH01M10/54C01B3/08C01B2203/14Y02P20/584Y02W30/84Y02E60/36
Inventor 吴撼明李振国任晓宁邵元凯刘双喜高继东李凯祥郑雪龙
Owner CHINA AUTOMOTIVE TECH & RES CENT
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