Unlock instant, AI-driven research and patent intelligence for your innovation.

Composite material of carbon-coated cobalt-cladded molybdate hybrid manganese dioxide heterogeneous structure for supercapacitor

A technology of carbon-coated cobalt-molybdenum and supercapacitors, which is applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve problems such as poor conductivity and restrict the development of electrode materials, and achieve high specific capacitance and superior electrochemical performance , to achieve a reasonable balance

Inactive Publication Date: 2017-06-13
SOUTH CHINA NORMAL UNIVERSITY
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But MnO 2 Poor electrical conductivity restricts its development as an electrode material

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
  • Composite material of carbon-coated cobalt-cladded molybdate hybrid manganese dioxide heterogeneous structure for supercapacitor
  • Composite material of carbon-coated cobalt-cladded molybdate hybrid manganese dioxide heterogeneous structure for supercapacitor
  • Composite material of carbon-coated cobalt-cladded molybdate hybrid manganese dioxide heterogeneous structure for supercapacitor

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] A method for preparing a carbon-coated cobalt-molybdic acid hybrid manganese dioxide heterostructure composite material for a supercapacitor comprises the following steps:

[0037] 1) Cobalt salt, molybdenum salt and nickel foam are synthesized by hydrothermal method to form nickel foam covered with cobalt molybdenum acid nanorods;

[0038] 2) After the product obtained in step 1) is carbonized, it is synthesized with manganese salt by a hydrothermal method.

[0039]Preferably, in step 1), the molar ratio of the cobalt salt to the molybdenum salt is 1:1.

[0040] Preferably, in step 1), the cobalt salt is divalent cobalt salt; the molybdenum salt is hexavalent molybdenum salt; further preferably, in step 1), the cobalt salt is CoCl 2 , Co(CH 3 COO) 2 or Co(NO 3 ) 2 , the molybdenum salt is (NH 4 ) 6 Mo 7 o 24 or Na 2 MoO 4 ; Further preferably, the cobalt salt is Co(NO 3 ) 2 , the molybdenum salt is Na 2 MoO 4 .

[0041] Preferably, in step 1), the react...

Embodiment

[0054] 1) Synthesis of cobalt molybdate CoMoO supported on nickel foam 4 Nano stave:

[0055] Take 1.5mmol Co(NO 3 ) 2 , 1.5mmol Na 2 MoO 4 Dissolve in a mixed solution of 15mL water and 15mL ethanol, and stir at room temperature for 0.5h to obtain a bright purple solution. Transfer it to a 50mL autoclave, and immerse the pretreated 1cm×2cm foam nickel into the above solution. The reactor was placed in an oven at 160 °C for 4 h. After the reaction was completed, the reactor was allowed to cool down naturally, the nickel foam was taken out, washed with water and absolute ethanol respectively, and dried overnight in an oven at 60°C.

[0056] 2) Synthesis of carbon-coated CoMoO 4 @MnO 2 (Cobalt molybdate hybrid manganese dioxide) nanomaterials

[0057] Will override CoMoO 4 The nanorod nickel foam was soaked in 0.01M glucose aqueous solution for 24h, taken out and dried, and then carbonized at 450°C for 2h in a nitrogen atmosphere. Then soak it in 0.01M KMnO 4 solutio...

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
current densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a composite material of carbon-coated cobalt-cladded molybdate hybrid manganese dioxide heterogeneous structure for a supercapacitor. The composite material is a core-shell structure material taking carbon-coated cobalt molybdate as the core and manganese dioxide as the shell. The preparation method of the composite material comprises the steps that 1, cobalt, molybdenum salt and nickel foam are synthesized by a hydrothermal method into coatings of cobalt molybdate nanorods nickel; 2, the obtained products from step 1 are carbonized, then prepared through manganese synthesis using the hydrothermal method. The invention provides a new idea of building composite materials through novel design, the manganese dioxide composites doped with cobalt molybdate is simple in preparation, low in cost and easy to implement. The prepared composite material used as an electrode material has superior electrochemical performance, relatively high capacitance and relatively good cycle stability, reasonable balance of material performance and cost is achieved, and the improvement of the overall performance of supercapacitors is facilitated, and the achievement of the industrialized application process is speeded up.

Description

technical field [0001] The invention relates to a carbon-coated cobalt-molybdic acid hybrid manganese dioxide heterostructure composite material for supercapacitors. Background technique [0002] The worldwide fossil energy crisis and global warming have made people pay more and more attention to the use of renewable energy, which has greatly promoted the vigorous development of new energy technologies in various countries, and the development of green and clean energy has become an irreversible trend in the contemporary era. However, the storage and utilization of new energy is another topic that cannot be ignored. Efficient energy storage and conversion technology is an important basis for the large-scale development of new energy and the utilization of renewable and clean energy. In addition, in order to meet the requirements of high-tech development such as large power sources, mobile communications, advanced weapons, and power grid peak regulation, new energy storage m...

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): H01G11/32H01G11/46H01G11/50H01G11/86
CPCY02E60/13H01G11/32H01G11/46H01G11/50H01G11/86
Inventor 邓洪贾凡力陈新丽李核黄丽娴吕舒婷刘瑾高嘉家
Owner SOUTH CHINA NORMAL UNIVERSITY
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com