A co-doped flexible sodium ion battery cathode material and a preparation method thereof

A technology for sodium ion batteries and positive electrode materials, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of high preparation cost, failure to use flexible electrodes, complicated preparation methods, etc., and achieve high capacity and excellent market application. Value, the effect of simple preparation process

Active Publication Date: 2019-01-18
GUANGDONG BRUNP RECYCLING TECH +1
View PDF11 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN104701543A discloses a Prussian blue analog positive electrode material for a sodium ion battery and a preparation method thereof, which uses the Na obtained by coprecipitation 2 Ni 0.4 co 0.6 Fe(CN) 6 The positive electrode material needs to use cobalt, the preparation cost is high, and it cannot be used for flexible electrodes
CN106549139A discloses a flexible self-supporting nanofiber electrode and its preparation method and lithium-sodium ion battery. The technical scheme uses electrospinning to embed active materials into the carbon nanofiber substrate, and its preparation method is relatively complicated

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 co-doped flexible sodium ion battery cathode material and a preparation method thereof
  • A co-doped flexible sodium ion battery cathode material and a preparation method thereof
  • A co-doped flexible sodium ion battery cathode material and a preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The preparation method of this co-doped flexible sodium ion battery cathode material comprises the following steps:

[0034] 1) mixing the nickel salt solution and the transition metal salt solution to obtain a mixed salt solution;

[0035] 2) Mix the mixed salt solution with Na 4 Fe(CN) 6 Mixing of solutions, avoiding light reaction, aging;

[0036] 3) Extract the composite flexible substrate obtained by the reaction, wash, dry, and press to obtain a co-doped flexible sodium-ion battery positive electrode material, whose chemical formula is Na 2 Ni m m n Fe(CN) 6 , the value ranges of m and n are as mentioned above.

[0037] Preferably, in step 1) of the preparation method, the concentration of the nickel salt solution or the transition metal salt solution is 0.005mol / L-0.2mol / L.

[0038] Preferably, in step 1) of the preparation method, the amount of nickel salt and transition metal salt is 0≤Ni / M≤10 according to the stoichiometric ratio of Ni and transition me...

Embodiment 1

[0054] Take 0.129g NiCl according to the ratio of Ni to Mn stoichiometric ratio 1:4 2 and 0.503g MnCl 2 Dissolve in 50mL deionized water respectively, and then mix the two solutions evenly in a 350mL beaker and record it as mixed solution A; another 2.42g Na 4 Fe(CN) 6 10H 2 O was dissolved in 100mL deionized water, recorded as solution B, and a square conductive carbon cloth with a mass of 0.182g and a side length of 40mm was added to solution B; then the mixed solution A was slowly added dropwise to the solution in a dark environment In B, use 100W low-power ultrasound for 2 hours in this process, and after aging for 20 hours, separate the composite flexible substrate and sediment powder at this time, wash with absolute ethanol and deionized water alternately for 3 times, and then put it in a vacuum at 60 °C After 24 hours in the drying oven, the composite flexible carbon cloth was rolled to obtain the Prussian blue analogue Na 2 Ni 0.2 mn 0.8 Fe(CN) 6 Na-ion battery ...

Embodiment 2

[0056] Take 0.065g NiCl according to the ratio of Ni to Mn stoichiometric ratio 1:9 2 and 0.566g MnCl 2 Dissolve in 50mL deionized water respectively, and then mix the two solutions evenly in a 350mL beaker and record it as mixed solution A; another 2.42g Na 4 Fe(CN) 6 10H 2 O was dissolved in 100mL deionized water, recorded as solution B, and a square conductive carbon cloth with a mass of 0.182g and a side length of 40mm was added to solution B; then the mixed solution A was slowly added dropwise to the solution in a dark environment In B, use 100W low-power ultrasound for 6 hours in this process, and after aging for 18 hours, take out the composite flexible substrate and sediment powder at this time, alternately wash 3 times with absolute ethanol and deionized water, and then put it in 60 ° C for vacuum drying After 24 hours in the box, the composite flexible carbon cloth was rolled to obtain the Prussian blue analog Na 2 Ni 0.1 mn 0.9 Fe(CN) 6 Na-ion battery flexibl...

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 discloses a co-doped flexible sodium ion battery cathode material and a preparation method thereof. The co-doped flexible sodium ion battery cathode material has the chemical formula ofNa2NimMnFe (CN) 6; Wherein M is at least one of Mn, Co, Ti, Fe, Cu, Zn and Cr; 0 <= m <= 1, 0 <= n <= 1. At that same time, the preparation method of the co-doped flexible sodium ion battery cathode material is also disclosed. The flexible composite electrode material obtained by the invention has the advantages of high capacity, high cycle stability and the like of electrochemical performance, meanwhile, has excellent flexibility and mechanical tensile strength, and the preparation process is very simple, low in cost, environmentally friendly and pollution-free, is suitable for mass preparation, and has excellent market application value.

Description

technical field [0001] The invention relates to a co-doped flexible sodium ion battery cathode material and a preparation method thereof. Background technique [0002] The successful commercialization of lithium-ion batteries has brought a lot of convenience to people's daily life, but at the same time, its poor safety performance and high cost have also become the motivation for researchers to work hard to improve. Compared with lithium-ion batteries, sodium-ion batteries are used as energy storage carriers. Although they are slightly inferior in terms of cycle performance, efficiency, and energy density, the raw material sodium of sodium-ion batteries comes from a wide range of sources, and the price is cheap, and the distribution of resources is not subject to geographical restrictions. Therefore, it has great resource and cost advantages, and large-scale energy storage pays more attention to the safety and cost factors of the battery system. [0003] Prussian blue, as a...

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): H01M4/58H01M10/054C01C3/12
CPCC01C3/12C01P2002/72C01P2004/03C01P2004/61C01P2004/62H01M4/58H01M10/054Y02E60/10
Inventor 许帅军叶文锦阮丁山唐胜贺汪乾刘婧婧
Owner GUANGDONG BRUNP RECYCLING TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap