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

A kind of three-dimensional porous black phosphorene/graphene for magnesium ion battery and its preparation method and application

A technology for dimensionally porous black phosphorene and magnesium ion batteries, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of cumbersome process and easily affecting the stability of nano black phosphorene, and achieve high energy density, excellent Effects of electrochemical performance, good cycle stability, and rate capability

Active Publication Date: 2021-08-03
SHANGHAI UNIV OF MEDICINE & HEALTH SCI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is not only cumbersome, but also easily affects the stability of nano black phosphorene during reduction.

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 kind of three-dimensional porous black phosphorene/graphene for magnesium ion battery and its preparation method and application
  • A kind of three-dimensional porous black phosphorene/graphene for magnesium ion battery and its preparation method and application
  • A kind of three-dimensional porous black phosphorene/graphene for magnesium ion battery and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] Weigh 500mg of red phosphorus, 80mg of tin powder and 40mg and mix them evenly, put them into a quartz ampoule with a length of 12cm and an inner diameter of 1cm, pass high-purity argon to remove the air, seal it with an oxygen-hydrogen flame, place it in a muffle furnace, and heat it at 1°C / min to 650°C, keep warm for 5h and then cool down to 500°C at 0.3°C / min, keep warm at this temperature for 2h and then cool down to room temperature naturally, break open the quartz ampoule with a tool, take out the black phosphorus crystal and wash it with hot toluene for several times , vacuum-dried to obtain black phosphorus crystals;

[0090] Take 7.75g (0.02mol) of tetrabutylammonium hexafluorophosphate cationic intercalation agent and dissolve it in 40mL N,N-dimethylformamide as the electrolyte, and clamp black phosphorus crystals with a size of 5*5*10mm on the electrode holder As a working electrode, a 10*10*0.5mm platinum plate electrode is used as a counter electrode, and ...

Embodiment 2

[0103] The three-dimensional porous black phosphorene / graphene composite was prepared by the same steps as in Example 1, except that the mass ratio of black phosphorene to graphene in the nano black phosphorene dispersion was 1:0.6.

[0104] After testing, the SEM image of the product prepared in this embodiment is as follows Image 6 As shown, the composite material has a three-dimensional porous structure, and black phosphorene is uniformly dispersed on the graphene skeleton.

[0105] The same steps as in Example 1 were used to prepare and assemble a battery, and further performance tests showed that the battery had better electrochemical performance.

Embodiment 3

[0107] The three-dimensional porous black phosphorene / graphene composite was prepared by the same steps as in Example 1, except that the mass ratio of black phosphorene to graphene in the nano black phosphorene dispersion was 1:4.

[0108] After testing, the SEM image of the product prepared in this embodiment is as follows Figure 7 As shown, the composite material has a three-dimensional porous structure, and black phosphorene is uniformly dispersed on the graphene skeleton.

[0109] The same steps as in Example 1 were used to prepare and assemble a battery, and further performance tests showed that the battery had better electrochemical performance.

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
thicknessaaaaaaaaaa
sizeaaaaaaaaaa
sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a three-dimensional porous black phosphorene / graphene for magnesium-ion batteries and its preparation method and application. The three-dimensional porous black phosphorene / graphene uses three-dimensional porous graphene as the skeleton, and the nano black phosphorene is evenly distributed On the surface of graphene; the surface of nano black phosphorene is positively charged, and the positive charge is stably combined with graphene through electrostatic adsorption; the sheet thickness of nano black phosphorene is less than or equal to 10nm, and the sheet size is less than 500nm. The present invention discloses for the first time a three-dimensional porous black phosphorene / graphene for magnesium ion batteries. The three-dimensional porous black phosphorene / graphene has a special morphology and can be used as a negative electrode material for magnesium ion batteries. On the other hand, it also liberates the magnesium-ion battery from the dilemma of not being able to use the traditional simple ionic salt / organic electrolyte system, and provides a great opportunity for the further development of high-voltage cathode materials and the improvement of the energy density of magnesium-ion batteries. possible.

Description

technical field [0001] The invention relates to the technical field of magnesium ion batteries, in particular to a three-dimensional porous black phosphorene / graphene for magnesium ion batteries and its preparation method and application. Background technique [0002] With the increasingly prominent energy and environmental issues, the development of new renewable energy is imminent, and efficient, sustainable and stable new energy storage technology is of great significance to the development and utilization of new energy. Magnesium-ion batteries are low in price due to abundant magnesium resources, low reduction potential (-2.37V vs. SHE), and high volume specific capacity (3833mAh cm -3 ), no dendrite formation, high safety, and good application prospects in large-scale power battery systems, and is rapidly becoming a promising energy storage and conversion technology. However, the metal magnesium anode is easy to react with the traditional electrolyte to form a passivat...

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): H01M4/36H01M4/38H01M4/587H01M10/054
CPCH01M4/364H01M4/38H01M4/587H01M10/054H01M2004/027Y02E60/10
Inventor 贾冬玲
Owner SHANGHAI UNIV OF MEDICINE & HEALTH SCI
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