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

Potassium ion battery sulfur-doped MXene negative electrode material and preparation method thereof

A negative electrode material, sulfur doping technology, used in battery electrodes, secondary batteries, circuits, etc., can solve problems such as unsatisfactory performance, and achieve the effects of low cost, stable charge and discharge performance, and good electrical conductivity

Active Publication Date: 2019-06-14
WUYI UNIV
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, MXene itself is used as a negative electrode material for potassium-ion batteries, and its performance is still unsatisfactory.

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
  • Potassium ion battery sulfur-doped MXene negative electrode material and preparation method thereof
  • Potassium ion battery sulfur-doped MXene negative electrode material and preparation method thereof
  • Potassium ion battery sulfur-doped MXene negative electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A preparation method of sulfur-doped MXene negative electrode material for potassium ion battery, comprising the following steps:

[0031] (1) Weigh 0.5g of V 2 CT x Add 0.5 g of dimethyl sulfone to deionized water, and magnetically stir for 4 hours to obtain a mixed solution;

[0032] (2) Move the mixed solution to the reaction kettle, move the reaction kettle to the oven and set the reaction temperature to 120°C and the reaction time to 12h, then cool to room temperature;

[0033] (3) The product obtained in step (2) was alternately washed 3 times with deionized water and ethanol, placed in a centrifuge for centrifugation at a speed of 3200r / min, and then vacuum-dried at 50°C for 12h;

[0034] (4) The product obtained in step (3) is heated up to 120° C. at a rate of 5° C. / min under a protective atmosphere of high-purity argon (purity ≥ 99.8%) at a gas flow rate of 150 ml / min, and kept at this temperature for 2 hour, cool down to room temperature to obtain the final...

Embodiment 2

[0038] A preparation method of sulfur-doped MXene negative electrode material for potassium ion battery, comprising the following steps:

[0039] (1) Weigh 0.4g of V 2 CT x Add 4 g of dimethyl sulfone to deionized water, and magnetically stir for 6 hours to obtain a mixed solution;

[0040] (2) Move the mixed solution to the reaction kettle, move the reaction kettle to the oven and set the reaction temperature to 150°C and the reaction time to 15h, then cool to room temperature;

[0041] (3) The product obtained in step (2) was alternately washed 3 times with deionized water and ethanol, placed in a centrifuge for centrifugation at a speed of 3200r / min, and then vacuum-dried at 50°C for 12h;

[0042] (4) The product obtained in step (3) is heated up to 420° C. at a rate of 5° C. / min under a protective atmosphere of high-purity argon (purity ≥ 99.8%) at a gas flow rate of 150 ml / min, and kept at this temperature for 4 hour, cool down to room temperature to obtain the final s...

Embodiment 3

[0046] A preparation method of sulfur-doped MXene negative electrode material for potassium ion battery, comprising the following steps:

[0047] (1) Weigh 0.3g of V 2 CTx and 6g of dimethyl sulfone were added to deionized water, and magnetically stirred for 8 hours to obtain a mixed solution;

[0048] (2) Move the mixed solution to the reaction kettle, move the reaction kettle to the oven and set the reaction temperature to 200°C and the reaction time to 18h, then cool to room temperature;

[0049] (3) The product obtained in step (2) was alternately washed 3 times with deionized water and ethanol, placed in a centrifuge for centrifugation at a speed of 3200r / min, and then vacuum-dried at 50°C for 12h;

[0050] (4) The product obtained in step (3) is heated up to 700° C. at a rate of 5° C. / min under a protective atmosphere of high-purity argon (purity ≥ 99.8%) at a gas flow rate of 150 ml / min, and kept at this temperature for 6 hour, cool down to room temperature to obtain ...

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
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a potassium ion battery sulfur-doped MXene negative electrode material and a preparation method thereof. The method comprises the following steps that (1) adding MXene and a sulfur source according to the mass ratio of 1:1-20 into deionized water, and stirring to prepare a mixed solution with the concentration of 1-100 mg / ml; (2) transferring the mixed solution into a reaction kettle, heating to 120-200 DEG C, reacting for 12-18 h, and then cooling to room temperature; (3) washing the product obtained in the step (2) by using a detergent, centrifuging, and then performing vacuum drying; (4) and placing the dried product in the step (3) in a tubular furnace, introducing protective gas, carrying out heat treatment reaction, and cooling to room temperature to obtain the potassium ion battery sulfur-doped MXene negative electrode material. The potassium ion battery negative electrode material prepared by the method has good conductivity, higher specific capacity andstable charge and discharge performance.

Description

technical field [0001] The invention belongs to the field of new energy materials, and in particular relates to a preparation method of a potassium-ion battery sulfur-doped MXene negative electrode material and its application in a potassium-ion battery. Background technique [0002] With the development of modern society, fossil energy sources are constantly depleted and exhausted, and the problem of environmental pollution has become increasingly prominent. The development and research of new renewable clean energy sources have attracted widespread attention. Due to the abundant potassium resources, uniform distribution, and low cost, potassium-ion batteries may become a widely used battery system in the field of large-scale electrochemical energy storage. However, the electrochemical performance of potassium-ion batteries is still unsatisfactory. How to improve the specific capacity of potassium-ion batteries while maintaining excellent cycle performance is a current res...

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): H01M4/58H01M10/054
CPCY02E60/10
Inventor 张业龙余金龙孙宏阳徐晓丹刘城位汪达张弛宋伟东陈梅温锦秀郭月曾庆光彭章泉
Owner WUYI UNIV
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