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

Preparation method of manganese oxide/porous carbon nanofiber composite material and product and application thereof

A technology of nanofibers and composite materials, which is applied in the field of preparation of oxide/porous carbon nanofiber composites, can solve the problems of high power density and high energy density loss, and achieve the effects of strengthening charge migration, protection and dissolution, and simple operation

Active Publication Date: 2015-04-22
ZHEJIANG UNIV
View PDF1 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Any attempt to gain high energy density at the expense of high power density is unwise

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
  • Preparation method of manganese oxide/porous carbon nanofiber composite material and product and application thereof
  • Preparation method of manganese oxide/porous carbon nanofiber composite material and product and application thereof
  • Preparation method of manganese oxide/porous carbon nanofiber composite material and product and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Add 1.5g of glucose, 40ml of deionized water, 0.1g of pelandas nanowires, 0.2g of F127, and 10mg of dopamine into a 50ml beaker, and stir to dissolve. dissolved in solution. The resulting solution was transferred to a reaction kettle, heated to 160°C, and reacted for 12 hours. After the reaction, the obtained precursor was washed with distilled water, then suction filtered, dried, and then carbonized at 900°C for 1 hour to obtain a manganese oxide / porous carbon nanofiber composite material. The scanning electron microscope image of the product is shown in figure 1 , see the transmission electron micrograph figure 2 and 3 . from figure 2 We can clearly see the manganese oxide / carbon nanofiber structure in which image 3 is the enlarged TEM image from image 3 We can see the obvious mesoporous structure. Figure 4 The specific surface area of ​​the product obtained by the low-temperature nitrogen adsorption and desorption test is given in , and the specific surfa...

Embodiment 2

[0056] Add 1.5g of glucose, 40ml of deionized water, 0.1g of pelandas nanowires, 0.2g of F127, and 10mg of dopamine into a 50ml beaker, and stir to dissolve. dissolved in solution. The resulting solution was transferred to a reaction kettle, heated to 160°C, and reacted for 12 hours. After the reaction, the obtained precursor was washed with distilled water, then suction filtered, dried, and then carbonized at 700°C for 1 h to obtain a manganese oxide / porous carbon nanofiber composite material. Figure 7 The specific surface area of ​​the product obtained by the low-temperature nitrogen adsorption and desorption test method is given in , and the specific surface area can reach 501m 2 / g. The pore volume ratio of micropores and mesopores is 0.18:0.82. It shows that we can control the pore structure and specific surface area of ​​the product by adjusting the calcination temperature.

Embodiment 3

[0058] Add 0.5g of glucose, 40ml of deionized water, 0.1g of pelandas nanowires, 0.2g of F127, and 10mg of dopamine into a 50ml beaker, and stir to dissolve. dissolved in solution. The resulting solution was transferred to a reaction kettle, heated to 160°C, and reacted for 12 hours. After the reaction, the obtained precursor was washed with distilled water, then suction-filtered, dried, and carbonized at 900°C for 1 h to obtain a manganese oxide / porous carbon nanofiber composite material, but the yield of the product was low. The scanning electron microscope image of the product is shown in Figure 8 .

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

PropertyMeasurementUnit
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a manganese oxide / porous carbon nanofiber composite material. According to the method, the biomass is used a raw material, the cryptomelane nanowire is used for forming a hard film plate, and the surfactant is used as a structural guiding agent; and under the effect of dopamine, hydrothermal reaction and calcining processing are carried out to obtain the manganese oxide / porous carbon nanofiber composite material. According to the preparation method provided by the invention, the biomass is used the raw material, so that the effects of low price and environment protection are realized; the equipment investment is low; the operation is simple; the difference between batches of products is small; and scale production can be realized. The prepared product has advantages of high capacitance, energy density, and power density, good rate capability and cycling stability, and excellent corrosion-resistant performance, so that the product is especially suitable for a super capacitor on the alkaline condition.

Description

technical field [0001] The invention relates to the field of preparation of electrode materials, in particular to a preparation method of a manganese oxide / porous carbon nanofiber composite material and its product and application. Background technique [0002] Along with petroleum resources are becoming increasingly scarce, and the exhaust emission of internal combustion engine that burns petroleum is more and more serious to environmental pollution (especially in large and medium cities), people are all researching the new energy device that replaces internal combustion engine. With its own advantages, supercapacitors can partially or completely replace traditional chemical batteries for traction power and starting energy of vehicles. It has higher power density than batteries and higher energy density than traditional electrolytic capacitors, making it an ideal energy storage device. However, how to prepare an electrode material with both high energy density and high pow...

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
IPC IPC(8): H01G11/36H01G11/46H01G11/26H01G11/86
CPCY02E60/13H01G11/36H01G11/26H01G11/46H01G11/86
Inventor 王勇王海燕
Owner ZHEJIANG UNIV
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