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Preparation method and application of H4.5Mo5.25O18*( H2O)1.36 hexagonal columnar micrometer rod and application

A hexagonal columnar, micro-rod technology, applied in the field of material chemistry, can solve the problems of poor conductivity and low lithium ion diffusion capacity, and achieve the effects of low cost, simple synthesis process and excellent electrochemical performance.

Active Publication Date: 2015-12-16
苏州科弗曼机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to aim at MoO 3 Intrinsic poor conductivity and low lithium ion diffusion ability, providing a H 4.5 Mo 5.25 o 18 ·(H 2 O) 1.36 Preparation method and application of hexagonal columnar microrods

Method used

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  • Preparation method and application of H4.5Mo5.25O18*( H2O)1.36 hexagonal columnar micrometer rod and application
  • Preparation method and application of H4.5Mo5.25O18*( H2O)1.36 hexagonal columnar micrometer rod and application
  • Preparation method and application of H4.5Mo5.25O18*( H2O)1.36 hexagonal columnar micrometer rod and application

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Embodiment 1

[0019] with H 4.5 Mo 5.25 o 18 ·(H 2 O) 1.36 A preparation method for hexagonal columnar microrods, comprising the steps of:

[0020] (1) Add 0.2 g of analytically pure ammonium molybdate to 15 ml of deionized water and stir for 20 minutes to dissolve it.

[0021] (2) Add 10 ml of analytically pure formic acid to the solution obtained in step (1), and stir for 20 minutes in a water bath at 80°C.

[0022] (3) Add 0.1 g of analytically pure polyvinylpyrrolidone to the solution obtained in step (2), and continue stirring for 20 minutes.

[0023] (4) Put the solution obtained in step (3) into a 100ml reactor for hydrothermal reaction, and conduct a hydrothermal reaction at 160°C for 14 hours, then naturally cool to room temperature and take out the reactor.

[0024] (5) The product obtained in step (4) was centrifugally filtered, washed 4 times with absolute ethanol, and dried in an oven at 70°C for 24 hours to obtain a blue powder, namely H 4.5 Mo 5.25 o 18 ·(H 2 O) 1....

Embodiment 2

[0029] with H 4.5 Mo 5.25 o 18 ·(H 2 O) 1.36 A preparation method for hexagonal columnar microrods, comprising the steps of:

[0030] (1) Add 0.6 g of analytically pure ammonium molybdate to 30 ml of deionized water and stir for 30 minutes to dissolve it.

[0031] (2) Add 30 ml of analytically pure formic acid to the solution obtained in step (1), and stir for 30 minutes in a water bath at 90°C.

[0032] (3) Add 0.5 g of analytically pure polyvinylpyrrolidone to the solution obtained in step (2), and continue stirring for 30 minutes.

[0033] (4) Put the solution obtained in step (3) into a 100ml reactor for hydrothermal reaction. At 180°C, conduct a hydrothermal reaction for 24 hours, cool naturally to room temperature, and then take out the reactor.

[0034] (5) Centrifuge the product obtained in step (4), wash it with absolute ethanol for 6 times, and dry it in an oven at 70°C for 20 hours to obtain a blue powder, which is 1-3 microns in diameter and 5-20 microns in l...

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Abstract

The invention discloses a preparation method and application of a H4.5Mo5.25O18*( H2O)1.36 hexagonal columnar micrometer rod and application. The preparation method comprises adding 0.2-0.6 g of analytically-pure ammonium molybdate into 15-30 mL of deionized water, and stirring for 10-30 min for dissolving ammonium molybdate; adding 10-30 mL of analytically-pure formic acid into the obtained solution, and stirring for 10-30 min under the condition of a water bath with the temperature of 80-90 DEG C; continuing to add 0.1-0.5 g of analytically-pure polyvinylpyrrolidone, and continuing to stir for 10-30 min; putting the obtained solution into a reaction vessel with the volume of 100 mL, performing a hydro-thermo reaction at 160-180 DEG C for 14-24 h, naturally cooling to room temperature and taking out of the reaction vessel; performing centrifugal filtration on the obtained product, washing for 3-6 times by using anhydrous ethanol, and baking in a baking oven with the temperature of 70 DEG C for 24 h, so as to obtain the H4.5Mo5.25O18.(H2O)1.3 hexagonal columnar micrometer rod. The preparation method is simple in operation, low in cost and low in energy consumption, and the obtained product is high in crystallization degree, can be synthesized in a large scale, and is applicable as a high-magnification lithium-ion-battery cathode material.

Description

technical field [0001] The invention belongs to the field of material chemistry, in particular to a H 4.5 Mo 5.25 o 18 ·(H 2 O) 1.36 The invention discloses a preparation method of a hexagonal columnar microrod, and the material can be used as an electrode negative electrode material of a lithium ion battery. Background technique [0002] From hybrid electric vehicles, pure electric vehicles, smart grids to portable electronic products, lithium-ion batteries have been widely used in various fields. With the continuous emergence of various new application fields, higher requirements are placed on the technology and performance indicators of lithium-ion batteries. It is particularly urgent to develop high specific capacity, high rate performance and excellent cycle stability. Among them, the design of highly efficient anode materials for lithium-ion batteries is one of the key factors. [0003] Although molybdenum trioxide is regarded as one of the candidate anode mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/00H01M4/48
CPCY02E60/10
Inventor 王海李字华孙壮志苏健邱陈伟王林江
Owner 苏州科弗曼机械有限公司