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Method for preparing doped type photocatalytic material from negative electrode waste material of lithium titanate battery

A lithium titanate battery and photocatalytic material technology, applied in chemical instruments and methods, battery recycling, recycling technology, etc., can solve the problem of unsuitable recycling of lithium titanate negative electrode waste

Active Publication Date: 2016-06-22
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a treatment method is not suitable for the recovery of lithium titanate negative electrode waste doped with other metal ions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides a doped metal ion TiO2 Photocatalytic materials and preparation methods thereof;

[0039] The method comprises the steps of:

[0040] Step 1, dissolving the metal ion-doped lithium titanate battery negative electrode waste material that has been disassembled and binder removed with 65% concentrated nitric acid, and the mass ratio of waste material to 65% concentrated nitric acid is 1:3;

[0041] The metal ion in the metal ion doped lithium titanate is zinc ion;

[0042] Step 2, after evaporating the solution obtained in step 1 to dryness, add deionized water according to the solid-liquid mass ratio of 1:5, stir and dissolve, filter and high-speed centrifuge to obtain a solution containing lithium, titanium and zinc ions, and use 65% concentrated nitric acid Adjust its pH to 3.0;

[0043] The concentration of lithium ions is 0.5mol / L, the concentration of titanium ions is 0.6mol / L, and the concentration of zinc ions is 0.01mol / L;

[0044] Step...

Embodiment 2

[0051] This embodiment provides a doped metal ion TiO 2 Photocatalytic materials and preparation methods thereof;

[0052] The method comprises the steps of:

[0053] Step 1, dissolving the metal ion-doped lithium titanate battery negative electrode waste material that has been disassembled and binder removed with 65% concentrated nitric acid, and the mass ratio of waste material to 65% concentrated nitric acid is 1:6;

[0054] The metal ion in the metal ion doped lithium titanate is composed of tungsten and chromium;

[0055] Step 2, after evaporating the solution obtained in step 1 to dryness, add deionized water according to the solid-liquid mass ratio of 1:10, stir and dissolve, filter and high-speed centrifuge to obtain a solution containing lithium, titanium, tungsten and chromium ions, and use 65% Concentrated nitric acid adjusts its pH to 3.0;

[0056] The concentration of lithium ions is 0.9mol / L, the concentration of titanium ions is 2.0mol / L, and the total concen...

Embodiment 3

[0064] This embodiment provides a doped metal ion TiO 2 Photocatalytic materials and preparation methods thereof;

[0065] The method comprises the steps of:

[0066] Step 1, dissolving the metal ion-doped lithium titanate battery negative electrode waste material that has been disassembled and binder removed with 65% concentrated nitric acid, and the mass ratio of waste material to 65% concentrated nitric acid is 1:4;

[0067] The metal ion in the metal ion doped lithium titanate is composed of chromium, alum and zirconium;

[0068] Step 2, after evaporating the solution obtained in step 1 to dryness, add deionized water according to the solid-liquid mass ratio of 1:7, stir and dissolve, filter and high-speed centrifuge to obtain a solution containing lithium, titanium, chromium, alum and zirconium ions, and use 3mol / L sodium hydroxide solution to adjust its pH value to 3.0;

[0069] The concentration of lithium ions is 0.8mol / L, the concentration of titanium ions is 1.0mo...

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Abstract

The invention relates to a method for preparing a doped type photocatalytic material from a negative electrode waste material of a lithium titanate battery. The method comprises the following steps of dissolving the disassembled negative electrode waste material of the metal ion doped lithium titanate battery by concentrated nitric acid after a binder is removed, and then drying the negative electrode waste material through evaporation; adding deionized water and dissolving, taking a certain amount of the negative electrode waste material to be added to a mixed solution containing absolute ethyl alcohol and deionized water; adding tetraisopropyl titanate to the mixed solution to perform water bath aging; and performing high-temperature calcining on the obtained precipitates to obtain the lithium and metal ion doped TiO<2> photocatalytic material. According to the method provided by the invention, the positive ion doped type TiO<2> photocatalytic material is prepared by fully utilizing the lithium titanate doped metal ions of the negative electrode waste material of the lithium battery; the method is simple in processing and low in cost; and the prepared positive ion doped type TiO<2> photocatalytic material has full-spectrum utilization capability and efficient photocatalytic activity.

Description

technical field [0001] The invention belongs to the field of resource utilization of lithium titanate battery negative electrode waste, in particular to a method for preparing a doped photocatalytic material by using lithium titanate battery negative electrode waste, in particular to a preparation of metal ion-doped lithium titanate battery negative electrode waste Cation-doped TiO 2 approach to photocatalytic materials. Background technique [0002] Lithium batteries are widely used power sources for electric vehicles and electric motorcycles. With the rapid development of the electric vehicle and motorcycle market in recent years, the use of lithium batteries has increased rapidly. Correspondingly, the number of discarded lithium-ion batteries has also begun to increase year by year. If they are not properly disposed of, it will not only cause environmental pollution pollution, and waste metal resources such as lithium. [0003] The lithium batteries used in electric ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54B01J37/08
CPCY02W30/84H01M10/54B01J37/08B01J37/082
Inventor 孙同华黄寿强朱南文李良
Owner SHANGHAI JIAO TONG UNIV