Carbon nanotube composite cobalt sulfide nanomaterial and preparation method and application thereof

A carbon nanotube composite and nanomaterial technology, which is applied in the field of carbon nanotube composite cobalt sulfide nanomaterials and its preparation, can solve the problems of cycle performance degradation and achieve the effects of smaller expansion range, improved pore size distribution, and inhibition of expansion
CN110844899AInactive Publication Date: 2020-02-28GUANGZHOU UNIVERSITY
3 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUANGZHOU UNIVERSITY
Publication Date
2020-02-28
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a carbon nanotube composite cobalt sulfide nanomaterial and a preparation method and application thereof. The preparation method comprises the following steps: uniformly mixinga cobalt salt solution, a zinc salt solution and a 2-methylimidazole solution, carrying out a reaction to obtain a precipitate, and washing and drying the precipitate to obtain a zeolite imidazate skeleton structure material; then roasting the zeolite imidazate skeleton structure material in an inert atmosphere to obtain a carbon nanotube composite metal cobalt nanomaterial; and finally, uniformlymixing the carbon nanotube composite metal cobalt nanomaterial with sulfur, and carrying out a sulfuration reaction in an inert atmosphere to obtain the carbon nanotube composite cobalt sulfide nanomaterial. The material can be used as an active material of an electrode. According to the invention, the zeolite imidazate skeleton structure material is subjected to high-temperature roasting to formcarbon nanotubes in situ, so material expansion is inhibited, an expansion amplitude is reduced, structural stability is improved, and a supercapacitor and a lithium-sulfur battery are allowed to have high capacity retention ratio after hundreds of times of cycles.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of electrode materials, and in particular relates to a carbon nanotube composite cobalt sulfide nanomaterial and a preparation method and application thereof. Background technique

[0002] Supercapacitor is a new type of energy storage device, which has the advantages of long cycle life, fast charging and discharging, and high power density. It is widely used in various fields, such as military industry, electronic products, civil and industrial fields. The main electrode material of supercapacitor is carbon material, which mainly takes advantage of the advantages of high specific surface area and rich pore structure of carbon material. However, carbon materials also have the defect of low wettability, which prevents electrolyte ions from fully entering the micropores, greatly reduces the specific surface utilization of carbon materials, and severely limits the capacity of supercapacitors.

[0003] Transiti...

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