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A kind of manganese vanadate nanometer material and its synthesis method, application

A technology to synthesize manganese vanadate nanometer and manganese vanadate nanometer, applied in the field of inorganic non-metallic materials, can solve the problems of high energy consumption, large size, long cycle, etc., and achieve the effect of controllable conditions, uniform size and pure product

Inactive Publication Date: 2017-03-01
SHIJIAZHUANG UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

The traditional synthetic method of manganese vanadate is mainly high-temperature solid-state reaction, manganese vanadate powder with irregular shape can be prepared by high-temperature solid-phase method, the reaction process consumes a lot of energy, and the cycle is long, and the product is usually a block Bulk material, large and uneven in size

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  • A kind of manganese vanadate nanometer material and its synthesis method, application
  • A kind of manganese vanadate nanometer material and its synthesis method, application
  • A kind of manganese vanadate nanometer material and its synthesis method, application

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Effect test

Embodiment 1

[0036] 4 mmol of ammonium metavanadate (NH 4 VO 3 , analytically pure) was dissolved in 8 mL of distilled water, and 2 mmol of manganese chloride (MnCl 2 · 4H 2 O, analytical grade) was dissolved in 4 mL of distilled water, and the NH 4 VO 3 The solution was added dropwise to MnCl 2 solution, make a reaction system, stir for 10 min, with 1mol / L HNO 3 (Analytical pure) solution Adjust the pH value of the reaction system to 2, continue to stir for 10 min, transfer it to a 20 mL hydrothermal reaction kettle, seal it, and place it in a thermostat for 3 hours at 120°C for hydrothermal reaction. After the reaction is completed, Cool to room temperature, centrifuge to obtain a precipitate, wash the precipitate five times with deionized water and absolute ethanol, and finally centrifuge and place the obtained precipitate in an oven, and dry it in vacuum at 60 °C for 16 h to obtain manganese vanadate MnV 12 o 31 10H 2 O nanomaterials.

[0037] Carry out phase analysis with X-r...

Embodiment 2

[0039] 0.2mmol of NH 4 VO 3 Dissolved in 8 mL of distilled water, 0.2 mmol of MnCl 2 · 4H 2 O was dissolved in 4 mL of distilled water, and the NH 4 VO 3 The solution was added dropwise to MnCl 2 solution, stirred for 10 min, with 1mol / L HNO 3 The solution adjusts the pH value of the reaction system to 2 and continues to stir for 15 min, then transfers it into a 20 mL hydrothermal reaction kettle, seals it and places it in a constant temperature box for 1 hour of hydrothermal reaction at 160 °C, and cools to room temperature after the reaction is completed , centrifuged to obtain a precipitate, washed with deionized water and absolute ethanol for 3 times, and dried in an oven at 60 °C for 16 h under vacuum to obtain MnV 12 o 31 10H 2 O material. The results of phase and morphology analysis are as follows: image 3 , Figure 4 As shown, it can be seen that the characteristic peak position and intensity of the product are related to the MnV 12 o 31 10H 2 O standard...

Embodiment 3

[0041] 8mmol of NH 4 VO 3 Dissolved in 8 mL of distilled water, 4 mmol of MnCl 2 · 4H 2 O was dissolved in 4 mL distilled water, and the NH 4 VO 3 The solution was added dropwise to MnCl 2 solution, stirred for 10 min, with 1mol / L HNO 3 The solution adjusts the pH value of the reaction system to 1 and continues to stir for 5 min, then transfers it into a 20 mL hydrothermal reaction kettle, seals it and places it in a constant temperature box for 6 hours of hydrothermal reaction at 110 °C, and cools to room temperature after the reaction , centrifuged to obtain a precipitate, washed five times with deionized water and absolute ethanol, and placed the obtained precipitate in an oven at 60 °C for 16 h in vacuum to obtain MnV 12 o 31 10H 2 O material. The results of phase and morphology analysis are as follows: Figure 5 , Image 6 As shown, the XRD spectrum results show that the intensity and position of the product diffraction peaks are related to the MnV 12 o 31 10...

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Abstract

The invention discloses a manganese vanadate nanometer material, a synthesis method and an application thereof, and belongs to the field of inorganic non-metallic materials. Using a one-step hydrothermal method, by adjusting the reaction conditions, manganese, vanadium, and oxygen are mixed at the molecular level to prepare MnV12O31·10H2O nanowires, expanding the types of manganese vanadate nanomaterials; further using the "dipping-drying" method The conductive polymer polyethylenedioxythiophene-polystyrenesulfonic acid (PEDOT-PSS) was coated on the surface layer of MnV12O31·10H2O nanowires to obtain composite modified nanomaterials MnV12O31·10H2O / PEDOT-PSS, and MnV12O31· 10H2O nanowires and composite modified nanomaterials MnV12O31·10H2O / PEDOT‑PSS are used as cathode materials for lithium-ion batteries. The beneficial effect of the present invention is that no surfactant or organic template is used in the synthesis process, the environment is friendly, the product is pure, the shape and size of the material are uniform, the synthesis method is simple, the conditions are controllable, and it is suitable for mass production, laying a good foundation for application research .

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, and in particular relates to a manganese vanadate nanometer material and its synthesis method and application. Background technique [0002] Manganese vanadate is an important inorganic material. According to the different proportions of manganese, vanadium and oxygen, manganese vanadate has many different compositions and structures. Such materials have good application prospects in electrical devices, optical devices and lithium-ion batteries due to their good electrical, optical and electrochemical properties. The traditional synthetic method of manganese vanadate is mainly high-temperature solid-state reaction, manganese vanadate powder with irregular shape can be prepared by high-temperature solid-phase method, the reaction process consumes a lot of energy, and the cycle is long, and the product is usually a block Bulk material, large and uneven in size. In recent years, wit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/505C01G45/00B82Y30/00H01M10/0525
CPCY02E60/10
Inventor 张绍岩侯梦华候玲玲马文钦
Owner SHIJIAZHUANG UNIVERSITY
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