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Universal preparation method of transition metal sulfide nanotube and application of transition metal sulfide nanotube as cathode material of rechargeable magnesium battery

A metal sulfide and transition metal technology, applied in battery electrodes, chemical instruments and methods, copper sulfide, etc., can solve the problem of high energy consumption, achieve high specific capacity, low price, and the synthesis method is simple, fast and easy to adjust.

Inactive Publication Date: 2020-11-27
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are currently different methods for synthesizing different transition metal sulfide nanotubes, and most of them require high-energy preparation methods such as hydrothermal and chemical vapor deposition methods. Therefore, a general and low-energy transition metal sulfide nanotube has been developed. The preparation method of the tube is imminent

Method used

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  • Universal preparation method of transition metal sulfide nanotube and application of transition metal sulfide nanotube as cathode material of rechargeable magnesium battery
  • Universal preparation method of transition metal sulfide nanotube and application of transition metal sulfide nanotube as cathode material of rechargeable magnesium battery
  • Universal preparation method of transition metal sulfide nanotube and application of transition metal sulfide nanotube as cathode material of rechargeable magnesium battery

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preparation example Construction

[0022] A general preparation method of transition metal sulfide nanotubes and its application as a positive electrode material for rechargeable magnesium batteries, the preparation steps are as follows:

[0023] (1) Mix a certain amount of ethylene glycol and deionized water evenly;

[0024] (2) The mixed solvent in step 1 is heated to a certain temperature in a water bath under stirring;

[0025] (3) adding a metal source substance and a sulfur source substance to the mixed solvent in step 2;

[0026] (4) The mixed system in step 3 is stirred and reacted for a certain period of time to obtain reactants, and the products are washed and dried to obtain transition metal sulfide nanotubes.

specific Embodiment 1

[0028] (1) Take a clean 200mL beaker, add 30mL ethylene glycol and 10mL deionized water into the beaker, and stir to obtain a colorless and clear solution.

[0029] (2) Place the beaker in step (1) in a water bath, turn on the heating device, and heat the mixed solution to 60°C.

[0030] (3) Add 2.5 mmol of copper nitrate trihydrate and 1.3 mmol of sodium thiosulfate to the mixed solution in step (2) at the same time, and react for 25 minutes under stirring to obtain a dark green turbid solution.

[0031] (4) The turbid solution in step (3) was centrifuged and washed several times with ethanol and deionized water, and the product obtained by centrifugation was dried at 80° C. for 12 hours to obtain CuS nanotubes.

specific Embodiment 2

[0033] (1) Take a clean 200mL beaker, add 30mL ethylene glycol and 10mL deionized water into the beaker, and stir to obtain a colorless and clear solution.

[0034] (2) Place the beaker in step (1) in a water bath, turn on the heating device, and heat the mixed solution to 60°C.

[0035] (3) 2.5 mmol of copper sulfate pentahydrate and 1.3 mmol of sodium thiosulfate were simultaneously added to the mixed solution in step (2), and stirred for 25 minutes to obtain a dark green turbid solution.

[0036] (4) The turbid solution in step (3) was centrifuged and washed several times with ethanol and deionized water, and the product obtained by centrifugation was dried at 80° C. for 12 hours to obtain CuS nanotubes.

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Abstract

The invention relates to a universal preparation method of a transition metal sulfide nanotube and application of the transition metal sulfide nanotube as a rechargeable magnesium battery cathode material. The preparation method comprises the following steps of: uniformly mixing a solvent ethylene glycol and deionized water according to a certain volume ratio to obtain a mixed solvent; heating themixed solvent in a water bath to a certain temperature, adding a certain amount of transition metal source substance and sulfur source substance into the mixed solvent, reacting for a period of timewhile stirring, centrifugally washing the product with deionized water and ethylene glycol for multiple times after the reaction is finished, and drying to obtain the transition metal sulfide nanotube. The preparation method has the advantages that the synthesis method is simple, rapid, easy to adjust and low in cost, and the synthesized product has a stable hollow tubular structure and has high specific capacity, ideal cycling stability and excellent rapid charging and discharging performance when being used as a cathode material of a rechargeable magnesium battery.

Description

technical field [0001] The invention relates to the technical field of improving the energy storage capacity of transition metal sulfides as anode materials for rechargeable magnesium batteries, in particular to a general preparation method of transition metal sulfide nanotubes and their application as anode materials for rechargeable magnesium batteries. Background technique [0002] Transition metal sulfides have been widely used in the research of cathode materials for rechargeable magnesium batteries due to their good structural flexibility and high theoretical capacity. However, due to the large charge density of magnesium ions with two charges, the structure of the matrix cathode material is easily damaged and exhibits poor electrochemical storage of magnesium during the repeated insertion and extraction of magnesium ions. dynamics. Therefore, optimizing and adjusting the structure of transition metal sulfides so that they have better electrochemical magnesium storage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/12C01G31/00C01G23/00C01G39/06H01M4/58H01M10/054
CPCC01G3/12C01G23/007C01G31/00C01G39/06C01P2002/72C01P2004/03C01P2004/04C01P2004/13C01P2006/40H01M4/5815H01M10/054Y02E60/10
Inventor 曹传宝杜昌亮
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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