a namno 2 @ni 2 o 3 Composite material and its preparation method and application in sodium ion battery

A composite material and precursor material technology, applied in NaMnO2@Ni2O3 composite material and its preparation, the application field of sodium ion battery, can solve the problems affecting the electrochemical performance of the battery, structural instability, etc., to improve the electrochemical performance, The effect of improving production efficiency and product quality and saving resources

Active Publication Date: 2022-05-13
湖州青钠新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve NaMnO 2 The structural instability brought by the material as a battery material affects the technical problem of the electrochemical performance of the battery, and a NaMnO 2 @Ni 2 o 3 Composite material and its preparation method and application in sodium ion battery

Method used

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  • a namno <sub>2</sub> @ni <sub>2</sub> o <sub>3</sub> Composite material and its preparation method and application in sodium ion battery
  • a namno <sub>2</sub> @ni <sub>2</sub> o <sub>3</sub> Composite material and its preparation method and application in sodium ion battery
  • a namno <sub>2</sub> @ni <sub>2</sub> o <sub>3</sub> Composite material and its preparation method and application in sodium ion battery

Examples

Experimental program
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Effect test

Embodiment 1

[0023] a NaMnO 2 @Ni 2 o 3 A method for preparing a composite material, comprising the steps of:

[0024] (1) Add 0.4102g of sodium acetate, 1.25g of manganese acetate, 0.040g of polyethylene glycol and 0.040g of glucose into water, ultrasonicate for half an hour to obtain a homogeneous mixed solution, and then feed the mixed solution at a feed rate of 2L / h, at the inlet Spray drying at a temperature of 220°C and an outlet temperature of 100°C to obtain precursor materials;

[0025] (2) Mix the precursor material with nickel acetate at a mass ratio of 5:1, add water and then ball mill it downward at a speed of 400rpm for 5 hours. Calcined at 500 °C for 3 h under nitrogen atmosphere to obtain NaMnO 2 @Ni 2 o 3 composite material.

[0026] To the NaMnO that present embodiment makes 2 @Ni 2 o 3 Composites observed by transmission electron microscopy. TEM such as figure 1 shown, from figure 1 It can be seen that the prepared NaMnO 2 @Ni 2 o 3 The particle size of t...

Embodiment 2

[0028] a NaMnO 2 @Ni 2 o 3 A method for preparing a composite material, comprising the steps of:

[0029] (1) Add 0.4512g sodium nitrate, 1.25g manganese acetate, 0.061g polyethylene glycol and 0.071g glucose into water, and ultrasonicate for half an hour to obtain a homogeneous mixed solution, and then put the mixed solution at a feed rate of 3L / h, at the inlet Spray drying at a temperature of 230°C and an outlet temperature of 110°C to obtain precursor materials;

[0030] (2) Mix the precursor material with nickel hydroxide at a mass ratio of 6:1, add water and ethanol (the mass ratio of water and ethanol is 1:1), and then ball mill it downward at a speed of 500 rpm for 2 hours. ℃ for 6 hours, and then placed in a tube furnace for calcination at 600 ℃ for 2 hours under a nitrogen atmosphere to obtain NaMnO 2 @Ni2 o 3 composite material.

Embodiment 3

[0032] a NaMnO 2 @Ni 2 o 3 A method for preparing a composite material, comprising the steps of:

[0033] (1) Add 0.5332g sodium chloride, 1.46g manganese sulfate, 0.005g polyvinyl alcohol and 0.006 sucrose into water, and ultrasonically half an hour to obtain a homogeneous mixed solution, which is then fed at a feed rate of 2L / h, imported Spray drying at a temperature of 200°C and an outlet temperature of 90°C to obtain precursor materials;

[0034] (2) Mix the precursor material with nickel chloride at a mass ratio of 5:1, add water and ethanol (the mass ratio of water and ethanol is 1:1), and then ball mill it downward at a speed of 400 rpm for 5 hours. ℃ for 8 hours, and then placed in a tube furnace for calcination at 400 ℃ for 9 hours under a nitrogen atmosphere to obtain NaMnO 2 @Ni 2 o 3 composite material.

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Abstract

The present invention relates to a kind of NaMnO 2 @Ni 2 o 3 The composite material and its preparation method and application in sodium-ion batteries comprise the following steps: (1) adding sodium source and manganese source to water, ultrasonically uniformly obtaining a mixed solution, and then spray-drying the mixed solution to obtain a precursor material (2) mixing the precursor material with a nickel source, adding a solvent and then ball milling, drying after ball milling, and then calcining to obtain NaMnO 2 @Ni 2 o 3 composite material. The NaMnO that the inventive method makes 2 @Ni 2 o 3 The composite material is a shell-core structure, Ni 2 o 3 for the shell material. NaMnO of the present invention 2 @Ni 2 o 3 As the electrode material of sodium ion battery, the composite material can improve the electrochemical performance of the battery.

Description

technical field [0001] The invention relates to the technical field of inorganic materials, in particular to a NaMnO 2 @Ni 2 o 3 Composite materials and their preparation methods and applications in sodium-ion batteries. Background technique [0002] Lithium-ion batteries have been applied in large-scale energy storage due to their high conversion efficiency and easy maintenance. However, with the application of lithium-ion batteries in the field of large-scale energy storage equipment, this has also accelerated the mining speed of lithium resources. However, the uneven distribution of lithium resources on the earth and the abundant storage capacity lead to the rising production cost of lithium-ion batteries, which restrict the development of lithium-ion batteries. Compared with lithium resources, sodium resources are abundant and low in cost. At the same time, sodium-ion batteries have good safety. Therefore, Na-ion batteries will be easier to realize large-scale appl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/62H01M4/505H01M10/054B82Y30/00B82Y40/00
CPCH01M4/505H01M4/624H01M4/628H01M10/054B82Y30/00B82Y40/00H01M2004/028H01M2004/021Y02E60/10
Inventor 龚华旭窦雨琴王迪邱媛琪陈永珍
Owner 湖州青钠新能源科技有限公司
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