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Method for preparing magnetostriction material by utilizing spent lithium ion batteries

A technology of magnetostrictive materials and lithium-ion batteries, applied in the material selection of magnetostrictive devices, the manufacture/assembly of piezoelectric/electrostrictive devices, battery recycling, etc., to achieve environmental protection, energy saving, high The effect of magnetostrictive properties

Inactive Publication Date: 2015-05-06
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many researchers have done a lot of work on the recycling of waste lithium-ion batteries. On the one hand, in the traditional resource recovery, the precious metals in waste lithium-ion batteries are mainly separated and purified, and reused as industrial raw materials; On the one hand, the waste lithium-ion batteries are crushed and leached with acid solution, and the metals in them are directly used to make some value-added products, such as metal sulfates, nitrates, etc., and recombined into lithium cobalt oxide and other composite functional materials. materials, and the method of using waste lithium-ion batteries to prepare magnetostrictive materials has not been reported

Method used

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  • Method for preparing magnetostriction material by utilizing spent lithium ion batteries
  • Method for preparing magnetostriction material by utilizing spent lithium ion batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Select the waste lithium-ion battery with lithium cobalt oxide and lithium iron phosphate as the positive electrode material, and leaching the positive electrode active material obtained by dismantling the waste lithium-ion battery with the mixed solution of sulfuric acid / hydrogen peroxide at a solid-to-liquid ratio of 1:4g / mL , after filtering the leaching solution, adjust the pH=9.5 with sodium hydroxide, and completely precipitate the Fe in the filtrate 3+ and Co 2+ , filter and clean the filter residue with deionized water, then dissolve and filter out incompatibles with nitric acid, the molar concentration of sulfuric acid in the sulfuric acid / hydrogen peroxide mixed solution is 3mol / L, and the volume of hydrogen peroxide with a mass concentration of 30% is the same as that of the positive electrode active material The mass ratio is 1:1mL / g;

[0016] (2) Measure the Fe in the filtered nitric acid solution with an atomic absorption spectrophotometer 3+ and Co ...

Embodiment 2

[0021] (1) Select the waste lithium-ion battery with lithium cobalt oxide and lithium iron phosphate as the positive electrode material, and leaching the positive electrode active material obtained by dismantling the waste lithium-ion battery with the mixed solution of sulfuric acid / hydrogen peroxide at a solid-to-liquid ratio of 1:2g / mL , the leaching solution was filtered and adjusted to pH=9 with sodium hydroxide, and the Fe in the filtrate was completely precipitated. 3+ and Co 2+ , filter and clean the filter residue with deionized water, then dissolve and filter out incompatibles with nitric acid, the molar concentration of sulfuric acid in the sulfuric acid / hydrogen peroxide mixed solution is 2mol / L, and the volume of hydrogen peroxide with a mass concentration of 30% is the same as that of the positive electrode active material The mass ratio is 0.5:1mL / g;

[0022] (2) Measure the Fe in the filtered nitric acid solution with an atomic absorption spectrophotometer 3+ ...

Embodiment 3

[0026] (1) Select the waste lithium-ion battery with lithium cobalt oxide and lithium iron phosphate as the positive electrode material, and leaching the positive electrode active material obtained by dismantling the waste lithium-ion battery with the mixed solution of sulfuric acid / hydrogen peroxide at a solid-to-liquid ratio of 1:6g / mL , after filtering the leaching solution, adjust the pH=10 with sodium hydroxide, and completely precipitate the Fe in the filtrate 3+ and Co 2+ , filter and clean the filter residue with deionized water, then dissolve and filter out incompatibles with nitric acid, the molar concentration of sulfuric acid in the sulfuric acid / hydrogen peroxide mixed solution is 4mol / L, and the volume of hydrogen peroxide with a mass concentration of 30% is the same as that of the positive electrode active material The mass ratio is 1.5:1mL / g;

[0027] (2) Measure the Fe in the filtered nitric acid solution with an atomic absorption spectrophotometer 3+ and Co...

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Abstract

The invention discloses a method for preparing a magnetostriction material by utilizing spent lithium ion batteries, belonging to the technical fields of spent lithium ion battery recycling and preparation of magnetostriction materials. According to the key points of the technical scheme in the invention, the method for preparing the magnetostriction material by utilizing spent lithium ion batteries is characterized in that cobalt ferrite magnetostriction material with high magnetostriction property is obtained through a sol-gel-hydrothermal coupling method by utilizing the spent lithium ion batteries. According to the method disclosed by the invention, the spent lithium ion batteries are recycled, the energy is saved, the environment is protected, and the prepared cobalt ferrite magnetostriction material has high magnetostriction property and has obvious applications in pressure sensors, brakes, non-contact type sensors, sonar probes and magnetic force ejection devices.

Description

technical field [0001] The invention belongs to the technical field of recycling of waste lithium ion batteries and preparation of magnetostrictive materials, and in particular relates to a method for preparing magnetostrictive materials by using waste lithium ion batteries. Background technique [0002] Lithium-ion batteries have a series of excellent properties, and have the advantages of high specific energy, high power density, high working voltage and long cycle life. They have been widely used in mobile phones, notebook computers and cameras, etc. Developed with electric tools, the market share increased significantly. At present, the cathode materials of lithium-ion batteries mainly include LiMO 2 (LiCoO 2 , LiNiO 2 、LiNi 1 / 3 co 1 / 3 mn 1 / 3 o 2 ) system, lithium manganese oxide (LiMn 2 o 4 ) system and lithium iron system (LiFePO 4 )system. [0003] Waste lithium-ion batteries are a common solid waste in daily life. With the progress of life and the rapid de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54H01L41/20H10N35/85
CPCH01M10/54H10N35/85H10N30/093Y02W30/84
Inventor 席国喜席跃宾汤毅许会道姚路
Owner HENAN NORMAL UNIV
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