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

Preparation method, product and application of vanadium-based positive electrode material for zinc-ion battery

A zinc-ion battery, cathode material technology, applied in electrode manufacturing, battery electrodes, nanotechnology for materials and surface science, etc., can solve the problems of poor conductivity, unstable layered structure, etc. Rate performance, rich material source effect

Active Publication Date: 2022-06-07
CENT SOUTH UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, V 2 o 5 ·nH 2 O also has the disadvantages of unstable layered structure and poor conductivity.

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
  • Preparation method, product and application of vanadium-based positive electrode material for zinc-ion battery
  • Preparation method, product and application of vanadium-based positive electrode material for zinc-ion battery
  • Preparation method, product and application of vanadium-based positive electrode material for zinc-ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]First weigh 0.1182g ammonium metavanadate, so that it is fully dissolved in 20mL deionized water, and then take 0.94mL ethylenediamine, under the condition of magnetic stirring, it is slowly titrated to the above solution, after stirring evenly, 1M HCl is added dropwise to the above solution, adjusting the pH to 4.0. The above solution was poured into a high-pressure water hot kettle, moved to the oil bath pot, and the magnetic stirring was maintained under the condition of 120 °C oil bath for 6 h, so that the ethylenediamine was fully polymerized. Finally, the collected precipitate was filtered and the precipitate was placed in a vacuum drying box at 80 °C for 12 to 15 hours to obtain vanadium-based cathode material C 2 H 8 N 2 V 7 O 16 。

[0030] Vanadium-based cathode material C prepared in the present embodiment 2 H 8 N 2 V 7 O 16 XRD analysis is performed, the results of which are as follows Figure 1 as shown, from Figure 1 It can be seen that the characteristic peaks o...

Embodiment 2

[0035] First weigh 0.0697g acetylaceton oxyvanadium, so that it is fully dissolved in 20mL deionized water, and then take 0.63mL of ethylenediamine, under the condition of magnetic stirring, it is slowly titrated into the above solution, stirred evenly, 1.5MHCl is added dropwise to the above solution, adjust the pH to 5.0. The above solution was poured into a high-pressure water hot kettle, moved to the oil bath pot, and the magnetic stirring was maintained under the condition of 140 °C oil bath for 6 h, so that the ethylenediamine was fully polymerized in situ. Finally, the collected precipitate was filtered and the precipitate was placed in a vacuum drying box at 70 °C for 15 hours to obtain vanadium-based cathode material.

[0036] Illuminate C 2 H8 N 2 V 7 O 16 The mass ratio of the material, acetylene black, binder is 7:2:1 to weigh the raw material, after mixing, fully grind and mix well, and then add NMP (NMP and the mass ratio of the binder is 1:0.02326) to make the ground...

Embodiment 3

[0039] First weigh 0.2912g of vanadium pentoxide, so that it is fully dissolved in 20mL deionized water, and then take 1.16mL of ethylenediamine, under the condition of magnetic stirring, it is slowly titrated into the above solution, stirred evenly, 1M HCl is added dropwise to the above solution, adjusted pH to 3.0. The above solution was poured into a high-pressure water hot kettle, moved to the oil bath pot, and the magnetic force was stirred for 4 h under the condition of 160 °C oil bath, so that the ethylenediamine was fully polymerized in situ. Finally, the collected sediment was filtered and the sediment was placed in a vacuum drying box at 90 °C for 12 hours to obtain a vanadium-based material.

[0040] Illuminate C 2 H 8 N 2 V 7 O 16 The mass ratio of the material, acetylene black, binder is 7:2:1 to weigh the raw material, after mixing, fully grind and mix well, and then add NMP (NMP and the mass ratio of the binder is 1:0.02326) to make the ground powder appear slurry, ...

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
lengthaaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a vanadium-based positive electrode material for a zinc-ion battery and its product and application, comprising the following steps: 1) dissolving a vanadium-based compound in water to obtain a vanadium-based compound solution, and adding the Add organic amine dropwise to obtain a mixed solution; 2) Add inorganic acid dropwise to the mixed solution under stirring conditions, after the dropwise addition, continue to stir until mixed evenly to obtain a reaction solution; 3) Transfer the reaction solution to a high-pressure hydrothermal kettle placed in an oil bath, heated to a set temperature, and reacted. After the reaction was completed, it was naturally cooled to room temperature, and then the reaction solution was suction-filtered and dried to obtain a vanadium-based positive electrode material. The vanadium-based positive electrode material in the present invention is a nanowire structure embedded with organic molecules, which combines the excellent characteristics of inorganic materials, organic materials and unique nanowire structures, makes up for the defects of vanadium oxides, and has good assembly performance. It has the characteristics of excellent electrochemical performance and long cycle stability.

Description

Technical field [0001] The present invention belongs to the field of zinc-ion batteries, specifically relates to a zinc-ion battery vanadium-based cathode material preparation method and products and applications thereof. Background [0002] In the course of battery research, researchers are committed to developing ideal batteries with high energy / power density, long cycle life, good safety, and low price to meet people's demand for electricity in personal electronic devices, electric vehicles, large-scale energy storage devices, and other smart grids. Since Sony developed the first generation of lithium-ion batteries in the 1990s, they have dominated the field of electrochemical energy storage with their advantages of high energy / power density, slow self-discharge, and long cycle life. With the high cost of batteries, safety risks and complex operations caused by the lack of lithium resources, zinc ions in rechargeable water systems with high energy / power density, low cost, simp...

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): H01M4/62H01M4/48H01M4/02H01M4/04H01M4/131H01M4/1391H01M10/05H01M10/36B82Y30/00B82Y40/00
CPCH01M4/483H01M4/48H01M4/624H01M4/628H01M4/02H01M4/0404H01M4/131H01M4/1391H01M10/05H01M10/36B82Y30/00B82Y40/00H01M2004/028H01M2004/021Y02E60/10
Inventor 周江马雪梅曹鑫鑫梁叔全
Owner CENT SOUTH 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