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

a v 2 c@c composite hollow nanotube and preparation method thereof

A hollow nano, carbon nanotube technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as low utilization of active materials

Active Publication Date: 2021-04-20
QINGDAO UNIV OF SCI & TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above problems, the present invention passes V 2 The C nanosheets are evenly attached to the multi-level structure carbon nanotubes, giving full play to the V 2 C features high active sites and high specific capacity, and multi-level carbon nanotubes can effectively suppress the two-dimensional sheet structure V 2 The agglomeration of C, solving the problem of low utilization of active materials caused by it

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
  • a v <sub>2</sub> c@c composite hollow nanotube and preparation method thereof
  • a v <sub>2</sub> c@c composite hollow nanotube and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] a V 2 The preparation method of C@C composite hollow nanotube comprises the following steps:

[0028] (1) Add 1g of PVP to 15ml of DMF solution, stir at 75°C until dissolved.

[0029] (2) Utilize sodium fluoride and hydrochloric acid to V 2 AlC was etched at 75°C for 72 hours, centrifuged and washed three times with deionized water, and finally replaced with DMF solution for one wash, ultrasonically dispersed into a uniformly mixed V 2 C in DMF.

[0030] (3) Add 10ml of V in step (2) 2 Add 1g of PVP to the DMF solution of C, stir and dissolve at 70°C to prepare the electrospinning precursor solution.

[0031] (4) Using a coaxial electrospinning device, place the PVP solution in (1) in the inner tube of the concentric tube, place the PVP solution in (3) in the outer tube of the concentric tube, and spin under 20KV high pressure .

[0032] (5) The V obtained in (4) 2 The C@C film is dried in a vacuum oven, annealed at a high temperature in an inert gas, and the ann...

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 belongs to the technical field of electrode material preparation, in particular to a V 2 C@C composite hollow nanotube and preparation method thereof. By coaxial electrospinning method V 2 The C nanosheets are evenly attached to the multi-level structure carbon nanotubes, giving full play to the V 2 C features high active sites and high specific capacity, and multi-level carbon nanotubes can effectively suppress the two-dimensional sheet structure V 2 The agglomeration of C solves the problem of low utilization of active materials caused by it.

Description

Technical field: [0001] The invention belongs to the technical field of electrode material preparation, in particular to a V 2 C@C composite hollow nanotube and preparation method thereof. Background technique: [0002] Lithium-ion batteries have attracted extensive attention due to their advantages such as high energy density and good safety. However, with the development of electric vehicles and other fields, people's requirements for lithium-ion batteries are getting higher and higher. At present, the graphite-based carbon negative electrodes used in commercial lithium-ion batteries have been difficult to meet the requirements. Anode materials with excellent performance and cycle performance are of great significance to the improvement of lithium-ion battery performance. [0003] V 2 C has a high specific capacity and is an ideal anode material. However, its two-dimensional sheet structure is easy to agglomerate, which restricts its practical application, so it needs ...

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 Patents(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/62H01M10/0525B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/362H01M4/58H01M4/62H01M4/625H01M4/628H01M10/0525Y02E60/10
Inventor 王晓君刘治明徐常蒙魏晴杨磊
Owner QINGDAO UNIV OF SCI & TECH