Method and device for recycling metal from waste lithium battery

A technology for used lithium batteries and metals, applied in battery recycling, waste collector recycling, recycling technology, etc., to achieve the effects of reducing energy consumption, improving precipitation, and simplifying separation procedures

Active Publication Date: 2019-11-15
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a method and device for recovering metals from waste lithium batteries, and a method for purifying metals after recovering metals, so as to solve the various drawbacks existing in the existing methods for recycling waste lithium battery materials

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  • Method and device for recycling metal from waste lithium battery
  • Method and device for recycling metal from waste lithium battery

Examples

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Embodiment 1

[0045] The present embodiment provides a method for recycling metals from waste lithium batteries, the method comprising the following steps:

[0046] The positive electrode material of the waste lithium battery is used as the cathode, and the graphite electrode is used as the anode; wherein, the manufacturing method of the cathode is as follows: the positive electrode material of the waste lithium battery is taken, disassembled, calcined, washed, dried, ground, and pressed to form, and the cathode and the cathode are obtained. The thickness of the electrode is 5mm, and the compacted density of the cathode is 5g / cm 3 .

[0047] Put the cathode and anode into the ammonium carbonate electrolyte with a concentration of 0.1moL / L for electrochemical reaction. The applied potential of the electrochemical reaction is 0.2-1.5V, and the applied potential value is adjusted from large to small. The time is 2 hours, and the mixed solution containing the recovered metal ions is obtained, ...

Embodiment 2

[0055] The present embodiment provides a method for recycling metals from waste lithium batteries, the method comprising the following steps:

[0056] The positive electrode material of the waste lithium battery is used as the cathode, and the platinum electrode is used as the anode; the manufacturing method of the cathode is as follows: the positive electrode material of the waste lithium battery is taken, disassembled, calcined, washed, dried, ground, and pressed in sequence to obtain the cathode and the cathode The thickness of the electrode is 10mm, and the compaction density of the cathode is 10g / cm 3 .

[0057] Put the cathode and anode into the ammonium sulfate electrolyte with a concentration of 1.0moL / L for electrochemical reaction, the applied potential of the electrochemical reaction is 0.2-1.4V, and the time of applying the potential is 8h, to obtain the The solutions are mixed, and the recovered metal ions are leached step by step. Specifically, adjust the appli...

Embodiment 3

[0061] The present embodiment provides a method for recycling metals from waste lithium batteries, the method comprising the following steps:

[0062] The positive electrode material of the waste lithium battery is used as the cathode, and the graphite electrode is used as the anode; wherein, the manufacturing method of the cathode is as follows: the positive electrode material of the waste lithium battery is taken, disassembled, calcined, washed, dried, ground, and pressed to form in sequence to obtain the cathode, the cathode The thickness of the electrode is 7mm, and the compacted density of the cathode is 7g / cm 3 .

[0063] Put the cathode and anode into the ammonium chloride electrolyte with a concentration of 0.5moL / L for electrochemical reaction. The potential applied for the electrochemical reaction is 0.2-1.5V, and the applied potential value is adjusted from large to small. The electric potential time is 4 hours, and a mixed solution containing recovered metal ions ...

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Abstract

The invention relates to the technical field of energy and materials, in particular to a method and device for recycling metal from a waste lithium battery. The method comprises the following steps that the electrode material of the waste lithium battery is used as a cathode, and a noble electrode is used as an anode; and the cathode and the anode are placed in an electrolyte to carry out an electrochemical reaction, a mixed solution containing recycling metal ions is obtained, and the recycling metal ions comprise at least one kind of nickel ions, cobalt ions and manganese ions. The electrochemical reaction is utilized, and lithium, nickel, cobalt, manganese and other metal with high utilization value can be effectively recycled from a waste lithium battery electrode material.

Description

technical field [0001] The invention relates to the technical field of energy and materials, in particular to a method and a device for recovering metal from waste lithium batteries. Background technique [0002] With the rapid development of electronic information technology and new energy vehicle technology, lithium batteries have become the most widely used batteries in many important industries, especially lithium-ion batteries, because of their high voltage, light weight, large specific energy, With the advantages of small self-discharge, long cycle life, and no memory effect, it is increasingly used in communications, electronics, new energy power and other fields. [0003] Due to the limited number of cycles of lithium batteries, with the extensive use of lithium batteries, a huge number of waste lithium batteries will be produced, resulting in the disposal of waste lithium batteries has become an urgent problem to be solved in the lithium battery industry. Lithium i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00H01M10/54
CPCC22B7/006H01M10/54Y02W30/84Y02P10/20
Inventor 张作泰王树宾
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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