Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Flaky manganese dioxide hollow frame structure material and preparation method and application thereof

A technology of manganese dioxide and frame structure, which is applied in the field of nanomaterials, can solve the problems of high price, poor cycle stability, and low specific capacity of positive electrode materials for zinc-ion batteries, and achieves controllable structure, uniform distribution of components, and excellent zinc The effect of ion battery performance

Active Publication Date: 2020-07-10
ZHEJIANG UNIV OF TECH
View PDF8 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention overcomes commercial MnO 2 Anode materials for zinc-ion batteries have low specific capacity, poor cycle stability, and high price. A sheet-like manganese dioxide hollow frame structure material with uniform size and stable structure is provided.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flaky manganese dioxide hollow frame structure material and preparation method and application thereof
  • Flaky manganese dioxide hollow frame structure material and preparation method and application thereof
  • Flaky manganese dioxide hollow frame structure material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Heat the carbon fiber cloth with nitric acid in an oil bath at 80°C for 4 hours, rinse it with deionized water until it becomes neutral, and dry it in vacuum at 60°C for 24 hours to obtain a hydrophilic carbon cloth;

[0037] (2) At room temperature, add 40 mL of methanol solution containing 3.284 g of dimethylimidazole to 40 mL of methanol solution containing 1.308 g of cobalt nitrate hexahydrate, mix well under magnetic stirring for 6 hours, and add the above-mentioned hydrophilic carbon The cloth was reacted at room temperature for 12 h. After the reaction, it was rinsed with methanol three times; the obtained product was vacuum-dried at 60 °C for 24 h to obtain a three-dimensional Co-MOF / CC material; different magnifications of the three-dimensional Co-MOF / CC material The SEM picture is as follows figure 1 Shown; The XRD pattern of this three-dimensional Co-MOF / CC material is as follows figure 2 shown;

[0038] (2) At room temperature, add 36 mL of potassium ...

Embodiment 2

[0044] (1) Heat the carbon fiber cloth with nitric acid in an oil bath at 80°C for 6 hours, rinse it with deionized water until it becomes neutral, and dry it in vacuum at 60°C for 24 hours to obtain a hydrophilic carbon cloth;

[0045] (2) At room temperature, add 40 mL of methanol solution containing 3.284 g of dimethylimidazole to 40 mL of methanol solution containing 1.308 g of cobalt nitrate hexahydrate, mix well under magnetic stirring for 12 hours, add the above-mentioned hydrophilic carbon The cloth was reacted at room temperature for 12 h. After the reaction, it was washed with methanol three times; the obtained product was vacuum-dried at 60 °C for 24 h to obtain a three-dimensional Co-MOF / CC material;

[0046] (2) At room temperature, 6mg MnSO 4 Add 36mL aqueous solution of 100mL reaction kettle, add the above-mentioned Co-MOF / CC material, react in an oven at 180°C for 30min, rinse with deionized water three times, and the obtained product is vacuum-dried at 60°C fo...

Embodiment 3

[0048] (1) Heat the carbon fiber cloth with nitric acid in an oil bath at 80°C for 5 hours, rinse it with deionized water until neutral, and dry it in vacuum at 60°C for 24 hours to obtain a hydrophilic carbon cloth;

[0049] (2) At room temperature, add 40 mL of methanol solution containing 3.284 g of dimethylimidazole to 40 mL of methanol solution containing 1.308 g of anhydrous ferric chloride, mix well under magnetic stirring for 10 hours, add the above-mentioned hydrophilic The carbonized carbon cloth was reacted at room temperature for 12 h. After the reaction, it was washed with methanol three times; the obtained product was vacuum-dried at 60 °C for 24 h to obtain a three-dimensional Fe-MOF / CC material;

[0050] (2) At room temperature, add 36 mL of potassium permanganate solution with a concentration of 5 mmol / L into a 100 mL reaction kettle, add the above-mentioned Co-MOF / CC material, react in an oven at 100 °C for 180 min, and use deionized water After washing 3 tim...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of nano materials.In order to solve the problems of low specific capacity, poor cycling stability and high price of a commercial MnO2 zinc ion battery positive electrode material, the invention provides a flaky manganese dioxide hollow frame structure material and a preparation method and application thereof. The flaky manganese dioxide hollow frame structure material is prepared according to the following methodwhich comprises the steps: growing an MOF material on carbon fiber cloth in situ, then adding a manganese source, and converting the MOF material into the flaky manganese dioxide hollow frame structure material through a hydrothermal method. The method is simple in preparation process, mild in condition, universal, free of special requirements on equipment and capable of achieving large-scale industrial production; the flaky manganese dioxide hollow frame structure material retains an MOF frame structure, is uniform in size, stable in structure and uniform in component distribution, and has excellent zinc ion battery performance.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to a sheet-like manganese dioxide hollow frame structure material and a preparation method and application thereof. Background technique [0002] Nowadays, due to the continuous growth of economy and population, the global energy consumption and demand have increased dramatically, in order to reduce the gradual depletion of fossil fuels and the accompanying climate problems. The development of electric energy is getting more and more attention. However, the waste of traditional organic batteries has environmental pollution problems, and the development and utilization of new energy sources are imminent. As a new energy conversion device, zinc-ion batteries (ZIB) have high energy density, environmental friendliness, long service life, and energy conversion efficiency. High, low price and other advantages, has been widely concerned by people. However, it is still a great...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/50H01M4/62H01M10/054B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/362H01M4/502H01M4/62H01M10/054Y02E60/10
Inventor 曹澥宏高晓斌毋芳芳徐喜连蒋亚妮
Owner ZHEJIANG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com