Hexagonal vanadium pentoxide nano-material as well as preparation method and application thereof

A technology of vanadium pentoxide and nanomaterials, which is applied in the field of electrochemistry, can solve the problems of complex reaction process and high cost of reaction raw materials, and achieve the effects of simple preparation process, good cycle stability and excellent electrochemical performance

Active Publication Date: 2016-03-09
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the electrochemical performance of the cathode material prepared by this patent is relatively excellent, the cost of the reaction raw material is relatively high, and the reaction process is relatively complicated.

Method used

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  • Hexagonal vanadium pentoxide nano-material as well as preparation method and application thereof
  • Hexagonal vanadium pentoxide nano-material as well as preparation method and application thereof
  • Hexagonal vanadium pentoxide nano-material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Stir and mix 32g of vanadium pentoxide powder, 72ml of benzyl alcohol and 530ml of isopropanol (molar ratio: 1:4:40), reflux and condense at 95°C for 4 hours, remove unreacted vanadium pentoxide powder by filtration, and obtain oxidized Vanadium sol. The obtained vanadium oxide sol was concentrated by distillation at 95° C. to 1 / 3 of the original volume to obtain concentrated vanadium oxide sol. Mix and stir 15ml of concentrated vanadium oxide sol and 2ml of ethanol evenly, then add 30ml of deionized water and keep stirring to obtain a red-black viscous solution. After stirring for half an hour, transfer the viscous solution into a 50ml hydrothermal kettle, and place it in a 180°C oven for hydrothermal reaction for 7 days. After naturally cooling to room temperature, filter and rinse with deionized water and absolute ethanol several times. A black deposit was obtained. The obtained black deposit is heat-treated at 350° C. in air for 1 hour to obtain vanadium pentoxide...

Embodiment 2

[0041] Stir and mix 32g of vanadium pentoxide powder, 72ml of benzyl alcohol and 530ml of isopropanol (molar ratio: 1:4:40), reflux and condense at 95°C for 4 hours, remove unreacted vanadium pentoxide powder by filtration, and obtain oxidized Vanadium sol. The obtained vanadium oxide sol was concentrated by distillation at 95° C. to 1 / 3 of the original volume to obtain concentrated vanadium oxide sol. The prepared 15ml of concentrated vanadium oxide sol was not mixed with the ethanol solution, and 30ml of deionized water was directly added to the 15ml of concentrated vanadium oxide sol and continuously stirred to obtain a red-black viscous solution. After stirring for half an hour, transfer the viscous solution into a 50ml hydrothermal kettle, and place it in a 180°C oven for hydrothermal reaction for 7 days. After naturally cooling to room temperature, filter and rinse with deionized water and absolute ethanol several times. A black deposit was obtained. The obtained black...

Embodiment 3

[0044] Stir and mix 30g of vanadium pentoxide powder, 17.5ml of benzyl alcohol and 500ml of isopropanol (the molar ratio is 1:1:40), reflux and condense at 90°C for 4h, and remove unreacted vanadium pentoxide powder by filtration to obtain Vanadium oxide sol. The obtained vanadium oxide sol was concentrated by distillation at 95°C to 1 / 2 of the original volume to obtain concentrated vanadium oxide sol. Mix and stir 15ml of concentrated vanadium oxide sol and 1ml of ethanol evenly, then add 30ml of deionized water and keep stirring to obtain a red-black viscous solution. After stirring for half an hour, transfer the viscous solution into a 50ml hydrothermal kettle, and place it in a 200°C oven for hydrothermal reaction for 7 days. After naturally cooling to room temperature, filter it, and rinse it several times with deionized water and absolute ethanol. A black deposit was obtained. The obtained black deposit was heat-treated in air at 300° C. for 2 hours to obtain vanadium ...

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Abstract

The present invention relates to a hexagonal vanadium pentoxide nano-material as well as a preparation method and an application thereof. The vanadium pentoxide nano-material is hexagonal, and the thickness of each angle is about 100-300 nm. The preparation method comprises the following steps: using vanadium pentoxide powder, benzyl alcohol, and isopropanol as raw materials, preparing vanadium oxide collosol through reflux condensation and distillation concentration, mixing the collosol, ethanol and deionized water to obtain a vanadium pentoxide nano-material through a hydrothermal reaction and post sintering treatment. The prepared vanadium pentoxide nano-material is extremely suitable for an anode material of lithium-ion batteries. Compared with the prior art, the nano-material has the advantages of simple process, low manufacturing costs and excellent electrochemical performance and the like.

Description

technical field [0001] The invention relates to the technical field of electrochemistry, in particular to a hexagonal sheet-shaped vanadium pentoxide nanomaterial with a high-performance hexagonal sheet-like nanostructure and a preparation method and application thereof. Background technique [0002] The rapid development of science and technology is profoundly affecting people's daily life, but a series of problems brought about by the development of science and technology, such as environmental pollution, climate deterioration and the depletion of fossil energy, are becoming important issues that countries around the world need to solve urgently in pursuit of development. In order to realize the sustainable development of human beings, reducing the use of fossil energy and actively developing clean and sustainable renewable energy such as solar energy and wind energy have become the consensus of all countries in the world. The use of new energy is usually converted into el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G31/02B82Y40/00H01M4/48
CPCY02E60/10
Inventor 高国华梁兴毕文超杨辉宇吴广明沈军周斌
Owner TONGJI UNIV
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