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Alpha-MoO3-x nanobelt and preparation method thereof as well as electrode material and energy storage device

A -moo3-x, energy storage device technology, applied in the field of nanomaterials, can solve the problems of high price, small specific capacity of carbon materials, large resistance, etc., and achieve the effect of enhanced conductivity, increased capacity, and simple process

Active Publication Date: 2019-06-14
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specific capacity of carbon materials is small, the resistance is large, and the energy density of capacitors is not high; the rare metal oxide RuO 2 Although it has high specific capacity and good conductivity, it is expensive and cannot be used on a large scale
Electrode materials, as a key factor determining capacitor performance, limit the development of supercapacitors

Method used

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  • Alpha-MoO3-x nanobelt and preparation method thereof as well as electrode material and energy storage device
  • Alpha-MoO3-x nanobelt and preparation method thereof as well as electrode material and energy storage device
  • Alpha-MoO3-x nanobelt and preparation method thereof as well as electrode material and energy storage device

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Experimental program
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Effect test

Embodiment 1

[0060] This embodiment provides a kind of α-MoO 3-x The preparation method of nanobelt, comprises the following steps:

[0061] S1. Dissolve 0.5g of molybdenum powder in 10ml of hydrogen peroxide solution with a mass fraction of 30% in an ice bath, stir rapidly until uniform, and cool to obtain a yellow mixed solution;

[0062] S2. Add 10ml of absolute ethanol and 50ml of deionized water into the yellow mixed solution obtained in step S1, and stir for 1 hour to obtain a bright yellow mixed solution;

[0063] S3. Transfer the bright yellow mixed solution obtained in step S2 to a 100ml reactor for solvothermal reaction, the reaction temperature is 140°C, and the time is 18h;

[0064] S4. After the reaction kettle is naturally cooled to room temperature in step S3, open the reaction kettle, the upper layer is a blue solution, and the bottom sediment is a blue band-shaped product; the obtained sediment is alternately washed 5 times with absolute ethanol and deionized water , and...

Embodiment 2

[0066] This embodiment provides a kind of α-MoO 3-x The preparation method of nanobelt, comprises the following steps:

[0067] S1. Dissolve 0.3g of molybdenum powder in 10ml of hydrogen peroxide solution with a mass fraction of 25% under ice bath conditions, stir rapidly until uniform, and cool to obtain a yellow mixed solution;

[0068] S2. Add 5ml of absolute ethanol and 50ml into the yellow mixed solution obtained in step S1, and stir for 1 hour to obtain a bright yellow mixed solution;

[0069] S3. Transfer the bright yellow solution obtained in step S2 to a 100ml reactor for solvothermal reaction, the reaction temperature is 170°C, and the time is 10h;

[0070] S4. After the reaction kettle is naturally cooled to room temperature in step S3, open the reaction kettle, the upper layer is a blue solution, and the bottom sediment is a blue band-shaped product; the obtained sediment is alternately washed 5 times with absolute ethanol and deionized water , and dried at 80°C ...

Embodiment 3

[0072] This embodiment provides a kind of α-MoO 3-x The preparation method of nanobelt, comprises the following steps:

[0073] S1. Dissolve 0.6g of molybdenum powder in 10ml of hydrogen peroxide solution with a mass fraction of 40% under ice bath conditions, stir rapidly until uniform, and cool to obtain a yellow mixed solution;

[0074] S2. Add 10ml of absolute ethanol and 50ml of deionized water into the yellow solution obtained in step S1, and magnetically stir for 3 hours to obtain a bright yellow mixed solution;

[0075] S3. Transfer the bright yellow solution obtained in step S2 to a 100ml reactor for solvothermal reaction, the reaction temperature is 140°C, and the time is 24h;

[0076] S4. After the reaction kettle is naturally cooled to room temperature in step S3, open the reaction kettle, the upper layer is a blue solution, and the bottom sediment is a blue band-shaped product; the obtained sediment is alternately washed 5 times with absolute ethanol and deionized...

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Abstract

The invention discloses an alpha-MoO3-x nanobelt and a preparation method thereof as well as an electrode material and an energy storage device. The preparation method of the alpha-MoO3-x nanobelt comprises the following steps: taking molybdenum powder and dissolving the molybdenum powder in a hydrogen peroxide solution, adding a reducing agent, sufficiently mixing, transferring the obtained mixture into a reaction kettle for reacting to prepare the alpha-MoO3-x nanobelt. The prepared alpha-MoO3-x nanobelt has abundant and uniformly-distributed oxygen vacancies, and is extremely excellent in morphology and excellent in conductivity; and the alpha-MoO3-x nanobelt can be prepared into the electrode material with extremely excellent electrochemical properties such as capacity, rate performance and cycling performance, so that the electrochemical properties of the energy storage device can be improved.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to an orthorhombic molybdenum trioxide (α-MoO2) containing oxygen vacancies 3-x ) nanoribbon and its preparation method and comprising α-MoO 3-x Electrode materials and energy storage devices based on nanoribbon materials. Background technique [0002] As an environmentally friendly and efficient energy storage device, supercapacitors are widely used in electronic watches, toys, aerospace vehicles, etc. At present, carbon materials and RuO are widely used as electrode materials for supercapacitors. 2 . However, the specific capacity of carbon materials is small, the resistance is large, and the energy density of capacitors is not high; the rare metal oxide RuO 2 Although it has high specific capacity and good conductivity, it is expensive and cannot be used on a large scale. Electrode materials, as a key factor determining the performance of capacitors, limit the development of sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/02B82Y40/00H01G11/24H01G11/46H01G11/86H01M4/48H01M10/0525
CPCY02E60/13Y02E60/10
Inventor 赵世玺吴启龙
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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