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Recovery and reuse of a vanadium pentoxide material in lithium-ion batteries

A lithium-ion battery, vanadium pentoxide technology, applied in battery recycling, recycling technology, secondary battery and other directions, can solve the problems of difficult recycling operation, high recycling cost, poor ion transmission capacity and so on

Active Publication Date: 2021-09-14
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of vanadium pentoxide, such as poor ion transport ability, difficult recovery operation after battery cycle and high recovery cost, limit its further commercial application.

Method used

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  • Recovery and reuse of a vanadium pentoxide material in lithium-ion batteries
  • Recovery and reuse of a vanadium pentoxide material in lithium-ion batteries
  • Recovery and reuse of a vanadium pentoxide material in lithium-ion batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In the fume hood, use a hydraulic folding machine to disassemble the vanadium pentoxide-based waste lithium-ion battery after 10 cycles. The vanadium pentoxide material is ultrasonically cleaned with deionized water for 2 minutes, and the copper foil is taken out. Wash the vanadium pentoxide active material with water and ethanol for 2 minutes.

[0034] The vanadium pentoxide active material was heated to 500°C in a muffle furnace at 10°C min -1 Keep the heating rate for 3h, and then cool to room temperature to obtain the black recovered product lithium vanadium oxide.

Embodiment 2

[0036] In the fume hood, use a hydraulic folding machine to disassemble the vanadium pentoxide-based waste lithium-ion battery after 10 cycles. The vanadium pentoxide material is ultrasonically cleaned with deionized water for 30 seconds, and the copper foil is taken out. Wash the vanadium pentoxide active material with water and ethanol for 30s.

[0037] The vanadium pentoxide active material was heated to 500°C in a muffle furnace at 10°C min -1 Keep the heating rate for 3h, and then cool to room temperature to obtain the black recovered product lithium vanadium oxide.

Embodiment 3

[0039] In the fume hood, use a hydraulic folding machine to disassemble the vanadium pentoxide-based waste lithium-ion battery after 10 cycles. The vanadium pentoxide material is ultrasonically cleaned with deionized water for 5 minutes, and the copper foil is taken out. Wash the vanadium pentoxide active material with water and ethanol for 5 minutes.

[0040] The vanadium pentoxide active material was heated to 500°C in a muffle furnace at 10°C min -1 Keep the heating rate for 3h, and then cool to room temperature to obtain the black recovered product lithium vanadium oxide.

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Abstract

The invention discloses the recovery and reuse of a vanadium pentoxide material in a lithium ion battery, and belongs to the technical field of preparation of functional nanometer materials. This recovery method does not need to use a large amount of acid and alkali, but adopts a simple calcination process. The vanadium pentoxide material after the battery cycle is washed with water and alcohol, and calcined and annealed in air to obtain lithium vanadium oxide (LiV 3 o 8 ) materials are then reapplied in Li-ion batteries. The invention successfully converts the recycled vanadium pentoxide material into lithium vanadium oxide, and the obtained lithium vanadium oxide has excellent ion conductivity and lithium storage capacity, and can realize long-life lithium with high specific capacity and excellent stability. ion battery. The recovery process is simple to operate, no toxic substances are generated during the reaction process, and the energy consumption is low, so it can be applied to large-scale industrial production.

Description

technical field [0001] The invention relates to the recovery and reuse of a vanadium pentoxide material in a lithium ion battery, which can be used as a recovery and preparation method for an energy storage material, and belongs to the technical field of preparation of functional nanometer materials. Background technique [0002] In recent years, with the vigorous development of new industries such as mobile communication tools and electric vehicles, there are strict requirements for high-performance clean energy lithium-ion batteries: high energy density, high power density, long service life, environmental protection and recyclability, etc. Although the existing lithium-ion battery materials and technical development level have made breakthroughs, there are still many limitations in achieving large-scale applications, and it is difficult to meet the corresponding needs of the market. With the development of the lithium-ion battery market, people's demand for new energy sou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/54H01M4/485H01M10/0525B82Y40/00
CPCB82Y40/00H01M4/485H01M10/0525H01M10/54Y02E60/10Y02W30/84
Inventor 朱纪欣杜玲玉
Owner NANJING TECH UNIV
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