Preparation method of charged Bi2O3@RGO nanorod compound structure

A composite structure and nanorod technology, which is applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of high cost, limited subsequent use, and complicated process of composite structures, and achieve good electrochemical performance and high repeatability , the effect of simple process

Inactive Publication Date: 2016-03-23
MORIMATSU (JIANGSU) HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In addition, ZhaoY et al prepared Bi 2 S 3 CNT (carbon nanotube) composite structure is used to improve the capacity of lithium batteries to achieve good results, but in the existing preparation methods, the complicated process and the use of expensive instruments make the cost of preparing related composite structures too high, which greatly limits the subsequent use

Method used

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Comparison scheme
Effect test

Embodiment 1

[0021] In this embodiment charged Bi 2 S 3 The preparation method of nanorod RGO composite structure, comprises the following steps:

[0022] (1) Dissolve 2mmol of bismuth nitrate pentahydrate in 50ml of nitric acid with a molar concentration of 4mol / L to form a colorless and transparent solution;

[0023] (2) After ultrasonically dispersing 10 mg of graphene oxide in 50 ml of deionized water, slowly add the colorless and transparent solution in step (1) to form a black mixed solution;

[0024] (3) Add 5 mmol of thioacetamide to the black mixed solution in step (2), then let it stand for 48 hours until the black flocculent precipitate appears, take out the black flocculent precipitate, and rinse repeatedly with deionized water to pH value is 7;

[0025] (4) Disperse the reacted product in step (3) in a hydrazine hydrate solution with a mass concentration of 50%, and continuously stir for 8 hours with a magnetic stirrer whose rotation speed is controlled at 3000-6000r / min un...

Embodiment 2

[0028] In this embodiment charged Bi 2 S 3 The preparation method of nanorod RGO composite structure, comprises the following steps:

[0029] (1) Dissolve 2mmol of bismuth nitrate pentahydrate in 50ml of nitric acid with a molar concentration of 2mol / L to form a colorless and transparent solution;

[0030] (2) After ultrasonically dispersing 5 mg of graphene oxide in 50 ml of deionized water, slowly add the colorless and transparent solution in step (1) to form a black mixed solution;

[0031] (3) Add 5 mmol of thioacetamide to the black mixed solution in step (2), then let it stand for 24 hours until the black flocculent precipitate appears, take out the black flocculent precipitate, and rinse repeatedly with deionized water to pH value is 7;

[0032] (4) Disperse the reacted product in step (3) in a hydrazine hydrate solution with a mass concentration of 50%, and continuously stir for 12 hours with a magnetic stirrer whose rotation speed is controlled at 3000-6000r / min un...

Embodiment 3

[0035] In this embodiment charged Bi 2 S 3 The preparation method of nanorod RGO composite structure, comprises the following steps:

[0036] (1) Dissolve 2mmol of bismuth chloride in 50ml of hydrochloric acid with a molar concentration of 4mol / L to form a colorless and transparent solution;

[0037] (2) After ultrasonically dispersing 10 mg of graphene oxide in 50 ml of deionized water, slowly add the colorless and transparent solution in step (1) to form a black mixed solution;

[0038] (3) Add 5 mmol of thioacetamide to the black mixed solution in step (2), then let it stand for 48 hours until the black flocculent precipitate appears, take out the black flocculent precipitate, and rinse repeatedly with deionized water to pH value is 7;

[0039] (4) Disperse the reacted product in step (3) in a hydrazine hydrate solution with a mass concentration of 50%, and continuously stir for 12 hours with a magnetic stirrer whose rotation speed is controlled at 3000-6000r / min until b...

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Abstract

The invention relates to a preparation method of a charged Bi2O3@RGO nanorod compound structure. The method comprises the steps that soluble bismuth salt is dissolved in an acid solution to form a colorless transparent solution; ultrasonic dispersion is conducted on graphene oxide in deionized water to form a solution; the graphene oxide solution is added to the colorless transparent solution, and the solution is changed into a black mixture; thioacetamide is added to the black mixture, and standing is conducted; black flocculent precipitation is generated at the bottom and the side wall of a beaker, the precipitation is repeatedly washed through deionized water till the pH value is seven, and then the precipitation is dispersed in a hydrazine hydrate solution with certain concentration and stirred; centrifugal purification is conducted on a reaction precipitation product, the purified product is washed through ethyl alcohol and deionized water and dried in a vacuum drying oven, and the obtained product is the charged Bi2O3@RGO nanorod compound structure. The preparation method of the charged Bi2O3@RGO nanorod compound structure has the advantages that the preparation process is simple and does not need to be supported by large expensive instruments, and the prepared charged Bi2O3@RGO nanorod compound structure has good electrochemical property.

Description

technical field [0001] The invention relates to the field of composite material preparation, in particular to a charged Bi with good electrochemical performance 2 S 3 Preparation of nanorod RGO composite structure. Background technique [0002] Carbon-based materials such as bulk graphite, carbon nanotubes, and graphene have the advantages of abundant raw materials, green and non-toxic, and low cost, so they have a wide range of application values ​​in the field of batteries in the energy industry. Especially reduced graphene oxide (RGO), due to its good kinetic and electrical properties, is the closest to the requirements of battery anode materials among carbon-based materials, but the high cycle capacity loss rate is the main problem that limits its application. The metal chalcogenide carbon-based composite structure has an obvious improvement effect on reducing the cycle capacity loss. [0003] In 2012, SathishM et al. used SnS 2 Nanoparticle-modified ultrathin graphe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G29/00B82Y30/00C01B31/04
CPCC01G29/00C01P2004/16C01P2006/40
Inventor 王立科茅陆荣
Owner MORIMATSU (JIANGSU) HEAVY IND CO LTD
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