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Nickel disulfide material with hollow micro-nano structure, preparation method of nickel disulfide material, aluminum ion battery positive electrode and aluminum ion battery

An aluminum ion battery, micro-nano structure technology, applied in nickel sulfide, battery electrodes, secondary batteries and other directions, can solve the problems of lack of electrode structure, poor battery cycle performance, lack of capacity and long-term stability of materials, etc., to achieve the preparation process Simple, stable cycle performance, non-denaturing effect

Active Publication Date: 2020-10-13
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there is a lack of materials with the required capacity and long-term stability among the existing cathode materials for aluminum-ion batteries, and the batteries show poor cycle performance due to the lack of a reasonable electrode structure.

Method used

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  • Nickel disulfide material with hollow micro-nano structure, preparation method of nickel disulfide material, aluminum ion battery positive electrode and aluminum ion battery
  • Nickel disulfide material with hollow micro-nano structure, preparation method of nickel disulfide material, aluminum ion battery positive electrode and aluminum ion battery
  • Nickel disulfide material with hollow micro-nano structure, preparation method of nickel disulfide material, aluminum ion battery positive electrode and aluminum ion battery

Examples

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Effect test

Embodiment 1

[0047] A method for preparing a hollow micro-nano structure nickel disulfide material, comprising the following steps:

[0048] 1) Add 1.5g sodium thiosulfate to 150mL deionized water, stir and mix evenly, then add 0.25g sodium lauryl sulfate, stir and mix until uniform, then add 1mL concentrated hydrochloric acid and stir evenly at 25°C for 3 hours, then add The obtained product filter paper was filtered and washed 30 times, and after washing, it was placed in an oven at 30° C. and dried for 5 hours to obtain nano-sulfur particles;

[0049] 2) Magnetically stir 0.08g of nickel nitrate, 0.05g of urea, and 20mL of deionized water evenly, then add 0.1g of nano-sulfur particles obtained in step 1) to the mixed solution, sonicate until dispersed, and transfer the mixed suspension to In a polytetrafluoroethylene liner, react in an oven at 70°C for 300min. After the reaction, cool to room temperature, wash twice by centrifugation, and dry at 55°C for 12h to obtain sulfur particles / n...

Embodiment 2

[0052] A preparation method of hollow micro-nano structure nickel disulfide, comprising the following steps:

[0053] 1) Add 1.75g ​​sodium thiosulfate to 200mL deionized water, stir and mix evenly, then add 0.37g sodium lauryl sulfate, stir and mix until uniform, then add 1mL concentrated hydrochloric acid and stir evenly at 35°C for 1.5h, then Filter and wash the obtained product filter paper 20 times, put it into an oven at 35°C after washing, and dry it for 5 hours to obtain nano-sulfur particles;

[0054] 2) Magnetically stir 0.12g of nickel nitrate, 0.1g of urea, and 25mL of deionized water evenly, then add 0.12g of nano-sulfur particles obtained in step 1) to the mixed solution, sonicate until dispersed, and transfer the mixed suspension to In a polytetrafluoroethylene liner, react in an oven at 85°C for 320min. After the reaction is completed, cool to room temperature, centrifuge and wash twice, and dry at 75°C for 12h to obtain sulfur particles / nickel oxyhydroxide com...

Embodiment 3

[0057] A preparation method of hollow micro-nano structure nickel disulfide, comprising the following steps:

[0058] 1) Add 1.85g sodium thiosulfate to 300mL deionized water, stir and mix evenly, then add 0.47g sodium lauryl sulfate, stir and mix until uniform, then add 1.5mL concentrated hydrochloric acid and stir evenly at 30°C for 2h, then Filter and wash the obtained product filter paper 20 times, put it into an oven at 45°C after washing, and dry it for 6 hours to obtain nano-sulfur particles;

[0059] 2) Magnetically stir 0.12g of nickel nitrate, 0.08g of urea, and 25mL of deionized water evenly, then add 0.12g of nano-sulfur particles obtained in step 1) to the mixed solution, sonicate until dispersed, and transfer the mixed suspension to In a polytetrafluoroethylene liner, react in an oven at 95°C for 320min. After the reaction is completed, cool to room temperature, centrifuge and wash twice, and dry at 75°C for 12h to obtain sulfur particles / nickel oxyhydroxide comp...

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Abstract

The invention discloses a nickel disulfide material with a hollow micro-nano structure, a preparation method of the nickel disulfide material, an aluminum ion battery positive electrode and an aluminum ion battery. The outer layers of nano sulfur particles are coated with hydroxyl nickel oxide through a hydrothermal method; calcining is performed at a proper temperature to form the nickel disulfide material with the hollow micro-nano structure; the aluminum ion battery positive electrode is prepared by taking the nickel disulfide material with the hollow micro-nano structure as a positive electrode active material; and the aluminum ion battery positive electrode can be assembled, so that the aluminum ion battery can be formed. The internal gap of the micro-nano structure of the hollow nickel disulfide material with the micro-nano structure is beneficial to ion flow in a charging and discharging process, the content of active substances is greatly increased, and the active mass loss inthe discharging and charging process is reduced, so that the electrochemical performance of the aluminum ion battery is improved.

Description

technical field [0001] The invention belongs to the technical field of new energy materials, and in particular relates to a hollow micro-nano structure nickel disulfide material and a preparation method thereof, an aluminum-ion battery positive electrode and an aluminum-ion battery. Background technique [0002] With the rapid development of science and technology, the research on portable energy storage materials has been paid more and more attention. At present, in the field of new energy materials technology, the main applications are lithium-ion batteries and lithium-sulfur batteries. However, due to the high cost of lithium, insufficient energy storage capacity, and safety issues, researchers still need to explore other materials. The content of aluminum in the earth's crust ranks third, and it is the most abundant metal element in the earth's crust, which can overcome the problem of resource scarcity; and the aluminum-ion battery uses a highly safe ionic liquid electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/11H01M4/58H01M10/054B82Y40/00
CPCC01G53/11H01M4/5815H01M10/054B82Y40/00H01M2004/028H01M2004/021C01P2004/61C01P2004/03C01P2002/72C01P2006/40Y02E60/10
Inventor 刘金云张敏蒋铭熙邓琳韩阗俐黄家锐
Owner ANHUI NORMAL UNIV
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