Method for synthesizing silver indium sulfide heterojunction structure nano material through hydro-thermal mode

A technology of silver indium sulfide and heterostructure, which is applied in the field of hydrothermal synthesis of silver indium sulfide heterostructure nanomaterials, can solve the problems of complex reaction conditions, excessively high reaction temperature, long reaction time and the like, and achieves simple raw materials and product purity. High effect, simple preparation method

Active Publication Date: 2013-02-13
ZHEJIANG UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the lithium battery of indium sulfide has a high theoretical capacity (about 710 mAh g -1 ), in lithium battery research, indium sulfide has also become the attention of many research groups (Cryst. Growth Des., 2009, 9, 113, J. Mater. Chem., 2011, 21, 17063, J. Mater. Chem. , 2011, 21, 18398, J. Mater. Chem., 2012, 22, 11107), but the synthesis of indium sulfide nanomaterials mostly requires relatively complex reaction conditions, long reaction time, and some high reaction temperatures bring safety hazards At the same time, the performance of lithium battery needs to be further improved

Method used

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  • Method for synthesizing silver indium sulfide heterojunction structure nano material through hydro-thermal mode
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  • Method for synthesizing silver indium sulfide heterojunction structure nano material through hydro-thermal mode

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Effect test

Embodiment 1

[0032] Follow the preparation process. First drop 2mL of the alcohol suspension of silver nanowires into 23ml of deionized water, and stir magnetically for 5 minutes, then add 0.231g of indium trichloride tetrahydrate solid into the previous mixed solution, and stir magnetically for 7 minutes to obtain a new mixed solution ; Another 260mg of cetyltrimethylammonium bromide was added, and the stirring was continued for 10 minutes; finally, 178mg of thioacetamide was added, and magnetically stirred for 10 minutes to obtain the precursor of the reaction. The mixed solution was poured into a 100ml three-necked round bottom flask, and placed in a reaction heating reaction system with a reflux device to keep the temperature while refluxing. The reaction conditions were: 95°C, 80min. After the reaction, the solution was centrifuged at a centrifugal rate of 10000r / min for 15min. After repeated centrifugation for 5 times, the solid obtained was vacuum-dried at room temperature into a p...

Embodiment 2

[0034]Follow the preparation process. Add 0.231g of indium trichloride tetrahydrate into a beaker containing 25ml of deionized water, and stir magnetically for 7 minutes to obtain a transparent and clear solution; add 260mg of hexadecyltrimethylammonium bromide and continue to stir for 10 minutes; When the solution was still clear, 178 mg of thioacetamide was finally added and magnetically stirred for 10 minutes to obtain a pale yellow solution, which was used as a reaction precursor. The solution was injected into a 100ml three-necked round-bottomed flask, and placed in a reaction heating reaction system with a reflux device to keep the temperature constant while refluxing. The reaction conditions were: 95°C, 80min. After the reaction, the solution was centrifuged at a centrifugal rate of 10000r / min for 15min. After repeated centrifugation for 5 times, the solid obtained was vacuum-dried at room temperature into a powder. The scanning electron microscope test sample is to t...

Embodiment 3

[0036] Follow the preparation process. Follow the preparation process. First drop 2mL of the alcohol suspension of silver nanowires into 23ml of deionized water, and stir magnetically for 10 minutes, then add 0.231g of indium trichloride tetrahydrate solid into the previous mixed solution, and stir magnetically for 7 minutes to obtain a new mixed solution ; Finally, 178mg of thioacetamide was added and magnetically stirred for 10 minutes to obtain the precursor of the reaction. Pour the mixed solution into a 100ml three-necked round bottom flask, and keep the temperature constant while refluxing in a reaction heating reaction system with a reflux device. The reaction conditions are: 95°C, 80min. After the reaction, the solution was centrifuged at a centrifugal rate of 10000r / min for 15min. After repeated centrifugation for 5 times, the solid obtained was vacuum-dried at room temperature into a powder. The scanning electron microscope test sample is to take out a small amoun...

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Abstract

The invention discloses a method for synthesizing a silver indium sulfide heterojunction structure nano material through a hydro-thermal mode. The method comprises steps of dissolving an alcoholic suspension of silver nanowires in de-ionized water, stirring the alcoholic suspension, adding indium trichloride tetrahydrate crystal to the mixing liquid, conducting magetic stirring, adding a certain amount of surface active agent cetyl trimethyl ammonium bromide, stirring the surface active agent cetyl trimethyl ammonium bromide till the surface active agent cetyl trimethyl ammonium bromide is dissolved completely, adding a certain amount of thiacetamide, stirring the thiacetamide till the thiacetamide is dissolved completely, regarding the formed mixing liquid as a precursor solution of the silver indium sulfide heterojunction structure nano material, refluxing and heating the precursor solution in a round bottom flask with three necks by using a hydro-thermal method, changing conditions, and obtaining nano structure materials with different shapes. The reaction system is simple, the reaction temperature is low, the synthesized silver indium sulfide structure is novel, the synthesized composite material yield is high, and the reverse specific discharge capacity of the material is high when the material serves as a lithium material cathode. Besides, the method has good repeatability and operability.

Description

technical field [0001] The invention relates to a method for preparing nanomaterials, in particular to a method for hydrothermally synthesizing silver indium sulfide heterostructure nanomaterials. Background technique [0002] Nanomaterials and nanostructures are the most dynamic research objects in the field of new materials research today, and have a very important impact on future economic and social development. They are also the most active and important components of nanotechnology that are closest to applications. In terms of practical applications, due to the large specific surface area and unique nanostructure of semiconductor materials such as nano-oxides and sulfides, especially the theoretical specific capacity and high specific energy density of lithium batteries, it is considered that the 21st century is the most likely to be used as Electrode materials are used in energy storage devices such as lithium batteries. Therefore, the electrochemical research of nan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G15/00B82Y30/00
Inventor 蒋建中叶方敏姜清奎
Owner ZHEJIANG UNIV
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