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Preparation method and application of metal organic framework MIL-101-V with three-dimensional mesoporous structure

A metal-organic framework, three-dimensional mesoporous technology, applied in structural parts, electrical components, electrochemical generators, etc., can solve the problem of unfavorable rate performance and long-cycle stability of zinc-ion batteries, difficult high-rate charge-discharge cycle performance, secondary Due to the large size of manganese oxide particles, the effects of low cost of raw materials, improved electrochemical performance, and simple and easy-to-operate synthesis methods are achieved.

Pending Publication Date: 2021-11-02
安徽理工大学环境友好材料与职业健康研究院(芜湖)
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the manganese dioxide cathode material itself has poor conductivity and low structural stability, which adversely affects the rate performance and long-term cycle stability of zinc-ion batteries.
At present, the commercial manganese dioxide particle size is large, the conductivity is poor, the charge-discharge specific capacity is low, and it is prone to uneven dispersion in the process of mixing with the conductive agent to prepare the electrode, which is difficult to maintain at a high current density. Stable high-rate charge-discharge cycle performance

Method used

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  • Preparation method and application of metal organic framework MIL-101-V with three-dimensional mesoporous structure
  • Preparation method and application of metal organic framework MIL-101-V with three-dimensional mesoporous structure
  • Preparation method and application of metal organic framework MIL-101-V with three-dimensional mesoporous structure

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Effect test

Embodiment 1

[0028] A method of preparing a metal organic skeleton MIL-101-V in a three-dimensional media structure, according to the following steps:

[0029] S1: 30 ml of deionized water and 30 ml of water and 30 ml of water and 30 ml of water and 30 ml of absolute ethanol are mixed with a mixed solvent by magnetic stirring, and the vanadium chloride and the terephthalic acid monomer are mixed in the mixed solvent in the mixed solvent, and 25% by weight Ammonia was 6 ml to add a mixed solution.

[0030] S2: The mixed solution was stirred for 30 min and then transferred to a 100 mL autoclave, water heat treatment at a temperature of 180 ° C for 20 hours, and vanadium ions in the vanadium chloride and p-oslated formation were formed. Finally, it was washed three times with deionized water and ethanol. After the washing was completed, it was dried at 60 ° C for 24 hours to obtain a three-dimensional media metal organic skeleton MIL-101-V composite material, and then grounded and weighed product...

Embodiment 2

[0033] Metal organic skeleton MIL-101-V composites using the above three-dimensional media

[0034] At normal temperature, 0.04 g of the conductive carbon black was added to 0.8 g of 2.5 wt% polyvinylidene fluoride N-methylpyrrolidone solution to obtain a mixed solution. After 20 min, a 0.14 g of a three-dimensional diaphragm structure metal organic skeleton MIL-101-V composite material was added to the above mixed solution, and stirred for 4 hours to give a mixed uniform positive slurry. After stirring, the resulting positive electrode slurry is evenly applied to the surface of the titanium foil. After drying the coated titanium foil, a small circle having a diameter of 14 mm was cut, ie the zinc ion battery positive electrode.

[0035] A zinc ion battery was produced by producing a zinc ion battery using the above method

[0036] The zinc foil is also cut into a 14 mm small circle as a battery negative electrode material, and a 16 mm glass filter paper is used as a positive and ...

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Abstract

The invention discloses a preparation method and application of a metal organic framework MIL-101-V with a three-dimensional mesoporous structure, and an MIL-101-V composite material with a three-dimensional porous structure is obtained through a simple hydrothermal reaction. When the composite material is used as a positive electrode of a zinc ion battery, the composite material shows excellent electrochemical performance and still has the specific discharge capacity of 102.94 mAh / g after 100 cycles. The raw materials used in the method are renewable and environment-friendly, the operation is simple, and the method has a good application prospect in the aspect of large-scale energy storage of the aqueous zinc ion battery.

Description

Technical field [0001] The present invention relates to the preparation method of metal organic skeleton MIL-101-V, in particular, of a three-dimensional mediatable structure, and its application thereof. Background technique [0002] As the fossil fuel excessive consumption, energy crisis and climate deterioration have become a problem that the world needs to be solved. At present, the lithium-ion battery is used as a traditional energy storage device, which is widely used in the field of electrochemical energy storage, electric vehicles, flexibility and wearable electronic equipment due to its high energy density and long life. However, due to the poor safety performance of lithium ion batteries, and the increasing shortage of lithium resources, the development of high-orte and low-cost new batteries will become the focus of the battery. [0003] Benefited from Zn 2+ / Zn low oxidative reduction potential (-0.76V relative to standard hydrogen electrodes), high theoretical speci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00H01M4/60H01M10/36
CPCC08G83/008H01M4/606H01M10/36Y02E60/10
Inventor 潘成岭王辉尹成杰潘育松
Owner 安徽理工大学环境友好材料与职业健康研究院(芜湖)
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