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Recovery and reuse of vanadium pentoxide material in lithium ion battery

A lithium-ion battery and vanadium pentoxide technology, which is applied in battery recycling, recycling technology, secondary batteries, etc., can solve the problems of poor ion transmission capacity, high recycling cost, difficult recycling operation, etc., and achieve simple production process , high capacity, high conductivity and ion transfer rate effects

Active Publication Date: 2019-07-02
NANJING UNIV OF TECH
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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 vanadium pentoxide material in lithium ion battery
  • Recovery and reuse of vanadium pentoxide material in lithium ion battery
  • Recovery and reuse of vanadium pentoxide material in lithium ion battery

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 nano materials. The recyclingmethod does not require a large amount of acid and alkali, but uses a simple calcination process to water-wash and alcohol-wash the vanadium pentoxide material after a battery cycle, performs calcination annealing in the air to obtain a lithium vanadium oxide (LiV3O8) material and then reuses the material in lithium ion battery. The method successfully converts the cycled vanadium pentoxide material into lithium vanadium oxide. The obtained lithium vanadium oxide has excellent ion conductivity and lithium storage ability, and can realize a long-life lithium ion battery with high specific capacity and excellent stability. The recovery process is easy to operate, generates no toxic substance during the reaction process, is low in energy consumption, and can be applied to industrial large-scale 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 Applications(China)
IPC IPC(8): H01M10/54H01M4/485H01M10/0525B82Y40/00
CPCH01M10/54H01M4/485H01M10/0525B82Y40/00Y02W30/84Y02E60/10
Inventor 朱纪欣杜玲玉
Owner NANJING UNIV OF TECH
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