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Photocatalyst and application thereof in photocatalytic environment-friendly treatment of power battery

A photocatalyst and catalyst technology, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, chemical/physical process, etc. It can solve the problems of low degradation rate, inability to effectively recycle the diaphragm, and inability to treat the electrolyte alone.

Active Publication Date: 2020-10-23
GUANGDONG BRUNP RECYCLING TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional recycling methods, such as "A Lithium Battery Anaerobic Cracking Recycling and Sorting Process" (CN201810712762.2), cannot treat the electrolyte alone. Low resource recovery rate and obvious limitations
The use of current catalysts to catalytically degrade the electrolyte still has the problems of low catalytic conversion efficiency, high catalyst cost and low degradation rate.

Method used

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  • Photocatalyst and application thereof in photocatalytic environment-friendly treatment of power battery
  • Photocatalyst and application thereof in photocatalytic environment-friendly treatment of power battery
  • Photocatalyst and application thereof in photocatalytic environment-friendly treatment of power battery

Examples

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Comparison scheme
Effect test

Embodiment 1

[0056] A photocatalyst is obtained by loading Ag-TaON on hollow glass microspheres; the mass ratio of Ag-TaON to hollow glass microspheres is 1:5.

[0057] A preparation method of a power battery photocatalyst, comprising the following steps:

[0058] (1) Push the corundum porcelain boat filled with tantalum foil into the middle heating section of the tube furnace, seal it with a flange, and flow at a flow rate of 2mL min at ambient temperature -1 Pure N 2 20min, then switch the gas path to flow rate 2mL min -1 Access to H 2 and N 2 mixture, H 2 The concentration is 5%, and at the same time, the temperature control program is turned on at 2°C·min -1 Raise the temperature to 250°C at a certain rate and keep it warm for 30 minutes;

[0059] (2) Lower the temperature to the ambient temperature, switch the gas path to a flow rate of 2mL min -1 Pure N 2 20min, then switch the gas path to flow rate 2mL min -1 Access O 2 and N 2 mixture, O 2 The concentration is 5%, and...

Embodiment 2

[0067] A photocatalyst is obtained by loading Ag-TaON on hollow glass microspheres; the mass ratio of Ag-TaON and hollow glass microspheres is 1:8.

[0068] A method for preparing a photocatalyst, comprising the steps of:

[0069] (1) Push the corundum porcelain boat filled with tantalum foil into the middle heating section of the tube furnace, seal it with a flange, and flow at a flow rate of 15mL min at ambient temperature -1 Inject pure Ar for 70 minutes, then switch the gas path to a flow rate of 15mL min -1 Access to H 2 and N 2 mixture, H 2 The concentration is 8%, and at the same time, the temperature control program is turned on at 5°C·min -1 Raise the temperature to 300°C at a certain rate and keep it warm for 90 minutes;

[0070] (2) Reduce the temperature to the ambient temperature, switch the gas path to a flow rate of 15mL min -1 And feed pure Ar within 70min, and then switch the gas circuit with a flow rate of 15mL min -1 Access O 2 and N 2 mixture, O 2...

Embodiment 3

[0078] A photocatalyst is obtained by loading Ag-TaON on hollow glass microspheres; the mass ratio of Ag-TaON and hollow glass microspheres is 1:8.

[0079] A method for preparing a photocatalyst, comprising the steps of:

[0080] (1) Push the corundum porcelain boat filled with tantalum foil into the middle heating section of the tube furnace, seal it with a flange, and flow at a flow rate of 15mL min at ambient temperature -1 Inject pure Ar for 70 minutes, then switch the gas path to a flow rate of 15mL min -1 Access to H 2 and N 2 mixture, H 2 The concentration is 8%, and at the same time, the temperature control program is turned on at 5°C·min -1 Raise the temperature to 300°C at a certain rate and keep it warm for 90 minutes;

[0081] (2) Reduce the temperature to the ambient temperature, switch the gas path to a flow rate of 15mL min -1 And feed pure Ar within 70min, and then switch the gas circuit with a flow rate of 15mL min -1 Access O 2 and N 2 mixture, O 2...

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Abstract

The invention discloses a photocatalyst and application of the photocatalyst in photocatalytic environment-friendly treatment of a power battery. The photocatalyst is obtained by loading Ag-TaON on hollow glass beads, wherein the mass ratio of the Ag-TaON to the hollow glass beads is 1: (5-10). Ag-TaON and the hollow glass beads are compounded, the hollow glass beads have better light permeability, mutual shielding between catalysts is avoided, the photocatalyst filled in the reactor is fully excited, the light utilization rate can be effectively increased, and thus the catalytic conversion efficiency of the photocatalyst is improved.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a photocatalyst and its application in the photocatalytic environmental protection treatment of power batteries. Background technique [0002] Lithium battery electrolyte is the carrier of ion transport in the battery. Generally composed of lithium salt and organic solvent. The electrolyte plays the role of conducting ions between the positive and negative electrodes of the lithium battery. The electrolyte is prepared from raw materials such as high-purity organic solvent, electrolyte lithium salt and necessary additives under certain conditions and in a certain proportion. [0003] Lithium battery electrolyte is a liquid in which the electrolyte is dissolved in an organic solvent. The electrolyte is usually lithium perchlorate, lithium hexafluorophosphate, etc. Organic solvents are usually carbonate-based liquid organic substances. Electrolyte is an organic volatile liq...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/00B01J37/34B01D53/86B01D53/72
CPCB01J37/344B01J27/24B01D53/007B01D53/8668B01J35/393B01J35/394B01J35/39B01D53/885B01D2255/104B01D2255/207B01D2255/70B01D2259/804B01J37/0215B01J37/0221B01J37/0228B01J37/08B01J23/50B01J35/40B01J35/51B01D53/72B01J35/00B01D53/86B01J37/34B01J21/08B01J37/0036B01J37/024B01J37/04B01J37/14B01J37/341H01M10/54
Inventor 余海军彭挺谢英豪张学梅
Owner GUANGDONG BRUNP RECYCLING TECH
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