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

Method for preparing VS2 sodium-ion battery negative electrode material by one-step solvothermal method

A sodium-ion battery and negative electrode material technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of complexity, unsatisfactory initial Coulombic efficiency, and high cost, and achieve the effect of simple operation, favorable electron transfer, and low cost

Pending Publication Date: 2022-07-08
QILU UNIV OF TECH
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While these methods do slow down the volume expansion during cycling, they are either expensive or complex, and their initial coulombic efficiency (ICE) is still suboptimal
Therefore, further development of a simple and efficient synthetic VS 2 Materials approach remains a challenge

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
  • Method for preparing VS2 sodium-ion battery negative electrode material by one-step solvothermal method
  • Method for preparing VS2 sodium-ion battery negative electrode material by one-step solvothermal method
  • Method for preparing VS2 sodium-ion battery negative electrode material by one-step solvothermal method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: A Preparation of VS 2 Method for anode material of sodium ion battery

[0026] Specifically include the following steps:

[0027] (1) Measure 30 ml of nitrogen methyl pyrrolidone solution;

[0028] (2) Dissolve 0.468 g of vanadium source in NMP solution, stir for 30 min, add 1 g of thioacetamide, then add 4 mL of ammonia water, and continue to stir for 60 min.

[0029] (3) It was then transferred to a stainless steel reactor, kept at 180 °C for 20 h, and then lowered to room temperature. The obtained product was centrifuged, washed, and dried at 60 °C for 12 h to obtain VS 2 Solid powder, namely the VS 2 Anode material for sodium ion battery.

[0030] to the resulting VS 2 The anode material of sodium ion battery was tested, and its XRD pattern was as follows figure 1 shown, from figure 1 It can be seen in VS 2 (NMP) diffraction peaks all correspond to layered VS 2 (JCPDS No. 89-1640), its space group is P-3ml. It can be seen from the XRD pattern th...

Embodiment 2

[0032] Example 2: A Preparation of VS 2 Method for anode material of sodium ion battery

[0033] Specifically include the following steps:

[0034] (1) Measure 30 mL of nitrogen methyl pyrrolidone solution;

[0035] (2) Dissolve 0.468 g of vanadium source in NMP solution, stir for 40 min, add 1 g of thioacetamide, then add 6 mL of ammonia water, and continue to stir for 120 min.

[0036] (3) It was then transferred to a stainless steel reactor, kept at 160 °C for 20 h, and then lowered to room temperature. The obtained product was centrifuged, washed, and dried at 60 °C for 12 h to obtain VS 2 solid powder.

Embodiment 3

[0037] Example 3: A Preparation of VS 2 Method for anode material of sodium ion battery

[0038] Specifically include the following steps:

[0039] (1) Measure 30 mL of nitrogen methyl pyrrolidone solution;

[0040] (2) Dissolve 0.468 g of vanadium source in NMP solution, stir for 50 min, add 1 g of thioacetamide, then add 5 mL of ammonia water, and continue to stir for 100 min.

[0041](3) It was then transferred to a stainless steel reactor, kept at 180 °C for 22 h, and then lowered to room temperature. The obtained product was centrifuged, washed, and dried at 60 °C for 12 h to obtain VS 2 solid powder.

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

No PUM Login to View More

Abstract

The invention belongs to the technical field of preparation of sodium battery electrode materials, and particularly relates to a method for preparing a VS2 sodium ion battery negative electrode material by a solvothermal method, which comprises the following steps: dissolving a vanadium source in a nitrogen methyl pyrrolidone (NMP) solution, stirring, adding a sulfur source according to the molar ratio of vanadium to sulfur of 1: (3-5), dropwise adding ammonia water, magnetically stirring for 60-180 minutes, transferring the solution into a reaction kettle, keeping the temperature at 100-180 DEG C for 12-23 hours, filtering, washing, and drying to obtain the VS2 sodium ion battery negative electrode material. And centrifuging, washing and drying the obtained solid product to obtain the VS2 electrode material. The flower-shaped VS2 nanosheet is prepared by taking NMP (N-Methyl Pyrrolidone) as a solvent and adopting a solvothermal method. The three-dimensional self-assembly structure is beneficial to electron transfer, and large volume expansion in the sodium ion insertion / extraction process is relieved. The method has the advantages of simplicity in operation, low energy consumption, low cost and the like, and opens up a new idea for exploration and design of a sodium battery high-performance electrode material.

Description

technical field [0001] The invention belongs to the field of preparation of electrode materials for sodium batteries, in particular to a one-step solvothermal method for preparing VS 2 A method of anode material for sodium-ion batteries. Background technique [0002] Excessive use of fossil fuels has led to serious environmental pollution problems. Therefore, in order to solve energy and environmental problems, it is urgent to develop green energy and safe and reliable energy storage systems. Lithium-ion batteries (LIBs) have the advantages of high energy density, long life, and environmental protection. However, limited lithium resources limit the large-scale applications of lithium-ion batteries to a certain extent. Sodium-ion batteries (SIBs) will be a potential replacement for lithium-ion batteries. It turns out that traditional anode materials such as graphite are not suitable for sodium-ion batteries. Therefore, the development of anode materials suitable for sodium...

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): H01M4/58
CPCH01M4/58Y02E60/10
Inventor 任慢慢臧浩廷曹石磊杨飞刘伟良
Owner QILU UNIV OF TECH
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