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Solvent-thermal method for preparing spring-shaped superstructural Sn(HPO4)2.H2O nanodisk

A solvothermal and superstructure technology, applied in the fields of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve problems such as no nanodisk negative electrode material, and achieve easy control of process parameters, simple preparation equipment and process, and production. short cycle effect

Inactive Publication Date: 2009-10-21
HUAZHONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no research on the preparation of spring-like superstructure Sn(HPO 4 ) 2 ·H 2 Patent Report on O Nanodisk Anode Material

Method used

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  • Solvent-thermal method for preparing spring-shaped superstructural Sn(HPO4)2.H2O nanodisk
  • Solvent-thermal method for preparing spring-shaped superstructural Sn(HPO4)2.H2O nanodisk
  • Solvent-thermal method for preparing spring-shaped superstructural Sn(HPO4)2.H2O nanodisk

Examples

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Effect test

Embodiment 1

[0019] Step 1, take by weighing tin chloride, it is dissolved in dehydrated alcohol, is made into 160 milliliters of tin ion concentration and is 0.2mol / L solution;

[0020] Step 2, dropwise adding 85wt% concentrated phosphoric acid to adjust the pH value of the solution to 5;

[0021] Step 3, placing the solution obtained in step 2 in a 200 ml reactor, and performing a solvothermal reaction at 180° C. for 24 hours;

[0022] After step 4 and step 3 are finished, the solid product is centrifuged and washed 3 times with distilled water and absolute ethanol respectively;

[0023] Step 5. Place the product obtained in step 4 in a constant temperature drying oven at 60°C for 12 hours to obtain a spring-like superstructure Sn(HPO 4 ) 2 ·H 2 O nanodisks.

Embodiment 2

[0025] Step 1, take by weighing tin chloride, be dissolved in dehydrated alcohol, be made into the concentration of 160 milliliters of tin ions and be 1mol / L solution;

[0026] Step 2, dropwise adding 85wt% concentrated phosphoric acid to adjust the pH value of the solution to 5;

[0027] Step 3, placing the solution obtained in step 2 in a 200 ml reactor, and performing a solvothermal reaction at 180° C. for 24 hours;

[0028] After step 4 and step 3 are finished, the solid product is centrifuged and washed 4 times with distilled water and absolute ethanol respectively;

[0029] Step 5. Place the product obtained in step 4 in a constant temperature drying oven at 60°C for 12 hours to obtain a spring-like superstructure Sn(HPO 4 ) 2 ·H 2 O nanodisks.

Embodiment 3

[0031] Step 1, take by weighing tin chloride, be dissolved in dehydrated alcohol, be made into the concentration of tin ion in 160 milliliters of solutions and be 0.2mol / L;

[0032] Step 2, dropwise adding 85wt% concentrated phosphoric acid to adjust the pH value of the solution to 5;

[0033] Step 3, placing the solution obtained in step 2 in a 200 ml reactor, and performing a solvothermal reaction at 180° C. for 48 hours;

[0034] After step 4 and step 3 are finished, the solid product is centrifuged and washed 3 times with distilled water and absolute ethanol respectively;

[0035] Step 5. Place the product obtained in step 4 in a constant temperature drying oven at 60°C for 12 hours to obtain a spring-like superstructure Sn(HPO 4 ) 2 ·H 2 O nanodisks.

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Abstract

The invention provides a solvent-thermal method for preparing a spring-shaped superstructural Sn(HPO4)2.H2O nanodisk, which belongs to the category of nanometer material preparation by a wet chemical method. The method is characterized in that the method comprises the following steps of: adopting stannic salt as a raw material, and dissolving the stannic salt into anhydrous ethanol to obtain a tin salt solution; then dripping 85 weight percent strong phosphoric acid into the solution; and obtaining a spring-shaped superstructural Sn(HPO4).2H2O nanodisk powder material through the solvent-thermal treatment at a temperature of between 140 and 200 DEG C, the centrifugal washing and the drying. The method has the advantages that the method has mild preparation conditions, can obtain the spring-shaped superstructural Sn(HPO4)2.H2O nanodisk without high-temperature roasting, can control the size of the material by changing the preparation conditions, has simple equipment and process, and is easy to realize mass industrialized production.

Description

technical field [0001] The present invention is a method for preparing spring-like superstructure Sn(HPO 4 ) 2 ·H 2 The method of the O nano disk belongs to the category of preparing nanomaterials by wet chemical methods. The desired substance can be obtained by using this method without high-temperature roasting. Background technique [0002] Lithium-ion secondary battery is a power source with the best application and development prospects, and the negative electrode material is one of the key factors restricting its overall performance. The negative electrode materials used in the earliest commercialized lithium-ion batteries are almost all carbon / graphite materials, but when the carbon / graphite materials are charged and discharged for the first time, a passivation film will be formed on the carbon surface, resulting in capacity loss; and carbon electrodes The potential is very close to that of lithium. When the battery is overcharged, metal lithium may precipitate on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/26B82B3/00
Inventor 张礼知乔辉贾法龙
Owner HUAZHONG NORMAL UNIV
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