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Preparation method and application of NaNixMnyM1-x-yO2 material

A nanixmnym1-x-yo2, mixed material technology, applied in chemical instruments and methods, final product manufacturing, sustainable manufacturing/processing, etc., can solve problems such as poor cycle stability, achieve high capacity retention, simple operation, easy The effect of industrialization

Inactive Publication Date: 2021-01-29
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the currently proposed cathode candidate materials, such as transition metal oxides (TMOs), polyanionic compounds, Prussian blue analogues, and organic salts, layered transition metal oxides (TMOs) rely on their convenient 2DNa + Diffusion pathways and high theoretical capacity make attractive cathode candidates for sodium-ion batteries (SIBs), but with poor cycle stability

Method used

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  • Preparation method and application of NaNixMnyM1-x-yO2 material
  • Preparation method and application of NaNixMnyM1-x-yO2 material
  • Preparation method and application of NaNixMnyM1-x-yO2 material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]A kind of NaNi0.5Mn0.4Co0.1O2The preparation method of the material includes the following steps:

[0034](1) Press NaNi0.5Mn0.4Co0.1O2The stoichiometric ratio of each element in the stoichiometric ratio, weigh 1.05g sodium carbonate, 2.48g nickel acetate tetrahydrate, 1.96g manganese acetate tetrahydrate, 0.49g cobalt acetate with a balance, and mix them evenly, then add 10.0mL absolute ethanol and 10.0mL Dissolve in deionized water to obtain a mixture;

[0035](2) Pour the mixture into a ball milling tank, then add 0.1g glucose and 0.1g polyethylene glycol, and then ball mill on a planetary ball mill at 200rpm for 2 hours; obtain precursor materials;

[0036](3) Dry the obtained precursor material with a spray dryer (control the injection rate of the spray dryer to 10mL / min, the inlet temperature of the spray dryer is 120 ℃, the outlet temperature is 80 ℃), after spray drying in Malaysia Calcined in a furnace at 600℃ for 10 hours, NaNi will be obtained after the calcination is comple...

Embodiment 2

[0038]A kind of NaNi0.4Mn0.55Co0.05O2The preparation method of the material includes the following steps:

[0039](1) Press NaNi0.4Mn0.55Co0.05O2For the stoichiometric ratio of each element in the balance, weigh out 1.72g sodium acetate, 1.99g nickel acetate tetrahydrate, 1.96g manganese nitrate, 0.29g cobalt nitrate, and mix them evenly, then add 5.0mL absolute ethanol and 15.0mL deionized Dissolve in water to obtain a mixture;

[0040](2) Pour the mixture into a ball mill tank, then add 0.2g polyvinyl alcohol and 0.2g polyvinylpyrrolidone, and then ball mill on a planetary ball mill at 300rpm for 10 hours; obtain precursor materials;

[0041](3) Dry the obtained precursor material with a spray dryer (control the injection rate of the spray dryer to 35 mL / min, the inlet temperature of the spray dryer is 140 ℃, the outlet temperature is 85 ℃), after spray drying in Malaysia Calcined in a Furnace at 700℃ for 24 hours, NaNi is obtained after the calcination is completed0.4Mn0.55Co0.05O2materia...

Embodiment 3

[0043]A kind of NaNi0.4Mn0.4Cu0.1Mg0.1O2The preparation method of the material includes the following steps:

[0044](1) Press NaNi0.4Mn0.4Cu0.1Mg0.1O2The stoichiometric ratio of each element in the stoichiometric ratio, weigh 1.70g sodium nitrate, 2.10g nickel sulfate, 0.56g manganese trioxide, 0.32g copper sulfate, 0.30g magnesium nitrate with a balance, and mix them evenly, then add 5.0mL absolute ethanol Dissolve in 15.0mL deionized water to obtain a mixture;

[0045](2) Pour the mixture into a ball mill tank, then add 0.2g sucrose and 0.2g polyethylene glycol, and then ball mill it on a planetary ball mill at 300 rpm for 3 hours; obtain precursor materials;

[0046](3) Dry the obtained precursor material with a spray dryer (control the injection rate of the spray dryer to be 50mL / min, the inlet temperature of the spray dryer is 160℃, and the outlet temperature is 85℃). Calcined in a Furnace at 800℃ for 14 hours, NaNi will be obtained after the calcination is completed0.4Mn0.4Cu0.1Mg0.1O...

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Abstract

The invention discloses a preparation method and application of a NaNixMnyM1-x-yO2 material. The preparation method comprises the following steps: (1) mixing and dissolving a sodium source, a nickel source, a manganese source and an M source according to the stoichiometric ratio of each element in the NaNixMnyM1-x-yO2 material to obtain a mixed material, wherein M is any one of Cu, Co, Zn, Mg, Crand Zr, 0 < = x < = 1, 0 < = y < = 1, and 0 < = 1xy < = 1; (2) adding an organic additive into the mixed material, and then carrying out ball milling to obtain a precursor material; and (3) drying theprecursor material, and then calcining the precursor material to obtain the NaNixMnyM1-x-yO2 material. The sodium ion battery positive electrode material (NaNixMnyM1-x-yO2 ) prepared by the method has the advantages of high theoretical specific capacity, simplicity in operation and easiness in industrialization; the prepared NaNixMnyM1-x-yO2 material is used as a positive electrode material of asodium ion battery to assemble the sodium ion battery, the assembled sodium ion battery has relatively high specific capacity, excellent cycling stability and rate capability and high capacity retention ratio, a new method is provided for large-scale application of the sodium ion battery in the future, and the NaNixMnyM1-x-yO2 material has a wide application prospect.

Description

Technical field[0001]The invention relates to the technical field of battery electrode material preparation, in particular to a NaNixMnyM1-x-y O2Preparation methods and applications of materials.Background technique[0002]Due to the increase in global energy consumption, energy production, storage and conversion have become key issues. The rapid consumption of fossil fuels, the increase in carbon dioxide emissions, the intensification of environmental problems, and the development of various renewable and clean energy sources such as wind, solar and tidal energy have led to the development of grid-scale energy storage systems (ESS). The effective storage and use of these energy sources has also become an important research area. In ESS, rechargeable battery technology has become one of the promising candidates for sustainable electrode materials and electricity storage due to its flexibility, high energy conversion efficiency and simple maintenance. In addition, the low cost, long cy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/00H01M4/505H01M4/525H01M10/054H01M10/058
CPCC01G53/006H01M4/505H01M4/525H01M10/054H01M10/058H01M2004/028C01P2004/03C01P2006/40Y02E60/10Y02P70/50
Inventor 龚华旭王迪陈永珍江钰龙睿祺张少杰
Owner JIANGSU UNIV OF TECH
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