CoS/CoNi(OH)<4> porous nanocomposite and preparation method thereof

A nanocomposite material, 2·6H2O technology, applied in nanotechnology, nanotechnology, hybrid/electric double layer capacitor manufacturing, etc., can solve the problem of unsatisfactory cycle stability, achieve scientific and reasonable preparation method, novel appearance, good effect

Inactive Publication Date: 2018-12-07
NORTHEAST DIANLI UNIVERSITY
View PDF5 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its cycle stability is not ideal. At a current density of 3A / g, after 3000 cycles, the specific capacitance only maintains 73.8%.

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
  • CoS/CoNi(OH)&lt;4&gt; porous nanocomposite and preparation method thereof
  • CoS/CoNi(OH)&lt;4&gt; porous nanocomposite and preparation method thereof
  • CoS/CoNi(OH)&lt;4&gt; porous nanocomposite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1, a kind of CoS / CoNi(OH) 4 The preparation method of the porous nanocomposite material, the preparation steps are:

[0026] (1) Add 1mmol Co(NO 3 ) 2 ·6H 2O was dissolved in 25 mL of methanol to obtain Co(NO 3 ) 2 ·6H 2 O solution; 4mmol 2-methylimidazole was dissolved in 25mL methanol to obtain a 2-methylimidazole solution; under stirring conditions, the Co(NO 3 ) 2 ·6H 2 The O solution and the 2-methylimidazole solution were quickly mixed, stirred for 30 minutes, and left to stand at room temperature for 24 hours. The resulting product was washed with methanol and then vacuum-dried at 60°C for 12 hours to obtain ZIF-67; wherein, ZIF- 67 is cobalt ion metal organic framework; Co(NO 3 ) 2 ·6H 2 O is cobalt nitrate;

[0027] (2) Weigh 0.36mmol of ZIF-67 as a precursor, and ultrasonically disperse it in 25mL of absolute ethanol to obtain a uniformly dispersed ZIF-67 absolute ethanol dispersion; weigh 0.06mmol of TAA and dissolve it in 25mL of absol...

Embodiment 2

[0029] Embodiment 2, a kind of CoS / CoNi(OH) 4 The preparation method of the porous nanocomposite material, the preparation steps are:

[0030] (1) Add 1mmol Co(NO 3 ) 2 ·6H 2 O was dissolved in 25 mL of methanol to obtain Co(NO 3 ) 2 ·6H 2 O solution; 4mmol 2-methylimidazole was dissolved in 25mL methanol to obtain 2-methylimidazole solution, and under stirring conditions, the Co(NO 3 ) 2 ·6H 2 The O solution and the 2-methylimidazole solution were quickly mixed, stirred for 30 minutes, and left to stand at room temperature for 24 hours. After washing with methanol, the obtained product was vacuum-dried at 60° C. for 12 hours to obtain ZIF-67;

[0031] (2) Weigh 0.36mmol of ZIF-67 as a precursor, and ultrasonically disperse it in 25mL of absolute ethanol to obtain a uniformly dispersed ZIF-67 absolute ethanol dispersion; weigh 0.13mmol of TAA and dissolve it in 25mL of absolute ethanol, Obtain the TAA solution; under the condition of stirring, quickly add the TAA solu...

Embodiment 3

[0033] Embodiment 3, a kind of CoS / CoNi(OH) 4 The preparation method of the porous nanocomposite material, the preparation steps are:

[0034] (1) Add 1mmol Co(NO 3 ) 2 ·6H 2 O was dissolved in 25 mL of methanol to obtain Co(NO 3 ) 2 ·6H 2 O solution, 4mmol 2-methylimidazole was dissolved in 25mL methanol to obtain a 2-methylimidazole solution, and under stirring conditions, the Co(NO 3 ) 2 ·6H 2 The O solution and the 2-methylimidazole solution were quickly mixed, stirred for 30 minutes, and left to stand at room temperature for 24 hours. After washing with methanol, the obtained product was vacuum-dried at 60° C. for 12 hours to obtain ZIF-67;

[0035] (2) Weigh 0.36mmol of ZIF-67 as a precursor, and ultrasonically disperse it in 25mL of absolute ethanol to obtain a uniformly dispersed ZIF-67 absolute ethanol dispersion; weigh 0.26mmol of TAA and dissolve it in 25mL of absolute ethanol, Obtain the TAA solution; under the condition of stirring, quickly add the TAA so...

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
diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a CoS / CoNi(OH)<4> porous nanocomposite used in the technical field of super capacitor electrode materials. The CoS / CoNi(OH)<4> porous nanocomposite is characterized in that ZIF-67 used as a reaction precursor is partially vulcanized by using TAA first; then, Ni(NO3)<2>.6H<2>O is added, and etching precipitation reaction is conducted between the Ni(NO<3>)<2>.6H<2>O and theremaining ZIF-67; and the finally obtained CoS / CoNi(OH)<4> porous nanocomposite is of a chip level packaged porous hollow rhombohedral dodecahedron multistage structure with the diameter between 500nmand 600nm, and the nanocomposite has a novel shape and excellent properties. A scientific, reasonable, simple, practical and low-cost preparation method which is suitable for large-scale industrial production and has a good effect is further disclosed.

Description

technical field [0001] The invention relates to the field of supercapacitor electrode material preparation, in particular to a CoS / CoNi(OH) 4 Porous nanocomposites and methods for their preparation. Background technique [0002] Energy is an important material basis for the survival and development of human beings. However, with the rapid development of the global economy, fossil energy is becoming increasingly exhausted, prompting people to turn their attention to the development and rational use of renewable clean energy. From the perspective of energy utilization, electric energy has become an indispensable source of human material production and social development. In order to effectively use electric energy, it is urgent to improve and develop new energy conversion and energy storage devices. Supercapacitor is a new type of energy storage device between traditional capacitors and rechargeable batteries. Because of its advantages such as high power density, long cycle l...

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): H01G11/24H01G11/26H01G11/30H01G11/46H01G11/86B82Y30/00
CPCB82Y30/00H01G11/24H01G11/26H01G11/30H01G11/46H01G11/86Y02E60/13
Inventor 关晓辉黄莫寒杨柳
Owner NORTHEAST DIANLI UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap