A kind of recycling method of waste liquid metal battery

A liquid metal battery and recycling method technology, applied in battery recycling, waste collector recycling, recycling technology and other directions, can solve the problems of heavy metals, high material cost, economic loss, etc., and achieve low equipment requirements, simple procedures, The effect of low recovery cost

Active Publication Date: 2021-01-19
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the cost of materials used in liquid metal batteries is very high. If the scrapped liquid metal batteries are directly discarded, it will cause economic losses.
At the same time, the materials used in liquid metal batteries contain heavy metals, which will cause damage to the environment if they are directly discarded into the environment

Method used

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  • A kind of recycling method of waste liquid metal battery

Examples

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Embodiment 1

[0037] A recovery method for lithium bismuth liquid metal battery, comprising the following steps:

[0038] Step 1. Charge the waste lithium-bismuth liquid metal battery so that the voltage of the single battery reaches 0.5V, and then cool it down to room temperature;

[0039] Step 2. Disassemble the cooled lithium-bismuth liquid metal battery, and cut to obtain air pipes, copper current collectors, ceramic sealing rings and battery cells.

[0040] Step 3. Cut the battery cells, and use mechanical crushing method to separate the three parts of negative electrode, electrolyte and positive electrode according to the color.

[0041] Step 4, immerse the negative electrode foam nickel in dilute hydrochloric acid, purify the solution, and dry to obtain lithium chloride powder, then add a certain amount of potassium chloride for electrolytic refining to obtain pure lithium;

[0042]The electrolyte part can be separated and placed in deionized water to raise the temperature to 100°C....

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Abstract

The invention discloses a method for recycling a waste liquid metal battery, which can be used for recycling a waste lithium bismuth liquid metal battery after capacity attenuation, a negative electrode, namely foamed nickel for adsorbing lithium, in the lithium bismuth liquid metal battery is separated by adopting a mechanical separation method, and the lithium is obtained by adopting an electrolytic refining mode. Halogen salts of lithium serving as electrolytes, including lithium chloride, lithium fluoride and lithium bromide are mechanically stripped out, the three salts are separated by adopting a recrystallization method, and the residual stainless steel and positive bismuth are heated to 271.4 DEG C or above to obtain liquid metal bismuth so as to separate the metal bismuth from thestainless steel.

Description

technical field [0001] The invention belongs to the technical field of recycling energy storage batteries, and in particular relates to a method for recycling waste liquid metal batteries. Background technique [0002] With the depletion of fossil energy in the world, governments of various countries are actively developing new renewable energy that can replace fossil energy. However, most renewable energy such as wind energy and solar energy face the shortcomings of intermittent and high volatility. It will lead to the decline of the power supply quality of the power grid, which will lead to the difficulty of grid connection. At the same time, with the advent of the smart grid era, the traditional power system cannot well meet the increasing electricity demand of users, such as the shortage of electricity during peak hours of electricity consumption, and the oversupply of electricity during off-peak hours. [0003] In response to these problems, large-scale electric energy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/54C25C3/34C25C3/02
CPCC25C3/02C25C3/34H01M10/54Y02W30/84
Inventor 宁晓辉李国庆沈达勇单智伟
Owner XI AN JIAOTONG UNIV
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