A kind of electrospinning preparation method of manganese molybdate porous nanotube and manganese molybdate porous nanotube

An electrospinning and manganese molybdate technology, applied in the field of nanomaterials, can solve the problems of difficult industrial application of porous manganese molybdate nanotubes, difficulty in forming coaxial Taylor cones, uncertainty in the process of filament production, etc. Excellent rate performance, good cycle stability, improved kinetic performance

Inactive Publication Date: 2018-04-13
XINYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although hollow fibers with smaller diameters can be prepared by using the coaxial method, it is difficult to form a stable coaxial Taylor cone in the actual preparation process, and although it is theoretically established, there are serious uncertainties in the actual filament production process sex and instability
Therefore, the method of coaxial electrospinning to prepare porous manganese molybdate nanotubes is difficult for industrial application

Method used

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  • A kind of electrospinning preparation method of manganese molybdate porous nanotube and manganese molybdate porous nanotube
  • A kind of electrospinning preparation method of manganese molybdate porous nanotube and manganese molybdate porous nanotube
  • A kind of electrospinning preparation method of manganese molybdate porous nanotube and manganese molybdate porous nanotube

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Effect test

Embodiment 1

[0030] Embodiment 1 discloses a method for preparing manganese molybdate porous nanotubes by electrospinning, including the following steps:

[0031] S1: Add a mixed solution composed of 3ml deionized water and 2ml absolute ethanol into a weighing bottle, add ammonium heptamolybdate and manganese chloride with a molar ratio of 1:7 into the weighing bottle, and magnetically stir to dissolve to form molybdenum Manganese acid precursor solution; wherein, the ratio of the total mass of ammonium heptamolybdate and manganese chloride to the volume of the mixed solution is 0.52g / ml;

[0032] S2: Add 1g of polyvinylpyrrolidone powder with a molecular weight of 1.3 million to the manganese molybdate precursor solution obtained in step S1, and stir to form a uniform milky white mixed solution; wherein the quality of the polyvinylpyrrolidone powder and the manganese molybdate precursor The volume ratio of the solution is 0.2g / ml;

[0033] S3: Add 0.1 ml of hydrochloric acid dropwise to the mix...

Embodiment 2

[0037] Embodiment 2 discloses a method for preparing manganese molybdate porous nanotubes by electrospinning, including the following steps:

[0038] S1: Add a mixed solution composed of 1ml deionized water and 4ml DMF into the weighing bottle, add sodium molybdate and manganese acetate with a molar ratio of 1:1 into the weighing bottle, magnetically stir and dissolve to form a manganese molybdate precursor Solution; Among them, the ratio of the total mass of sodium molybdate and manganese acetate to the volume of the mixed solution is 0.1g / ml;

[0039] S2: Add 0.4g of polyvinylpyrrolidone powder with a molecular weight of 1.3 million and 0.1681g of citric acid to the manganese molybdate precursor solution obtained in step S1, and stir to form a uniform milky white mixed solution; among them, the polyvinylpyrrolidone powder and lemon The ratio of the total mass of the acid to the volume of the manganese molybdate precursor solution is 0.114g / ml;

[0040] S3: Add 0.3 ml of hydrochlor...

Embodiment 3

[0048] Embodiment 3 discloses a method for preparing manganese molybdate porous nanotubes by electrospinning, including the following steps:

[0049] S1: Add a mixed solution composed of 1ml deionized water and 5ml DMF into a weighing bottle, add sodium molybdate and manganese acetate with a molar ratio of 1:1 into the weighing bottle, magnetically stir and dissolve to form a manganese molybdate precursor Solution; Among them, the ratio of the total mass of sodium molybdate and manganese acetate to the volume of the mixed solution is 0.08g / ml;

[0050] S2: Add 1.5 g of polyvinylpyrrolidone powder with a molecular weight of 1.3 million to the manganese molybdate precursor solution obtained in step S1, and stir to form a uniform milky white mixed solution; among them, the quality of the polyvinylpyrrolidone powder and the manganese molybdate precursor The volume ratio of the body solution is 0.25g / ml;

[0051] S3: Add 0.5 ml of hydrochloric acid dropwise to the mixed solution obtained...

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Abstract

The invention discloses a method of preparing manganese molybdate porous nanotubes through electrostatic spinning. By applying a uniaxial electrostatic spinning technology to the preparation process of manganese molybdate porous nanotubes, the production process is simplified, the production cost is reduced, the yield of manganese molybdate porous nanotubes is improved, manganese molybdate porous nanotubes can be produced on a large scale, and the actual demand is satisfied. The process of the method is short. The manganese molybdate porous nanotubes prepared are of uniform size, high crystallinity, high length-to-diameter ratio, and large specific surface area. The invention further discloses a manganese molybdate porous nanotube which has a unique porous hollow structure. Porous nanotubes form a cross-linked network structure. The transfer of ions / electrons and the penetration of electrolyte are promoted. The diffusion path of electrolyte ions in the material is shortened. The manganese molybdate porous nanotube has high specific capacity, excellent rate performance and good cycle stability. Moreover, the dynamic performance is greatly improved.

Description

Technical field [0001] The invention relates to the field of nano materials, in particular to a method for preparing manganese molybdate porous nanotubes by electrostatic spinning and manganese molybdate porous nanotubes. Background technique [0002] Supercapacitor is a kind of electrochemical energy storage device. Compared with various energy storage devices that are widely used at present, it has the advantages of fast charging and discharging with large current, long cycle life, and large specific capacity. In addition, supercapacitors also have the characteristics of high safety performance, no pollution to the environment, and wide operating temperature range, so they occupy an increasingly key position in high-tech energy storage technology. [0003] Electrode material is one of the key factors that determine the performance of supercapacitors. According to the difference in electrochemical energy storage mechanism, electrode materials mainly include carbon materials, condu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/86D01F9/08D01D10/02D01D5/24D01D5/00B82Y40/00B82Y30/00
CPCY02E60/13
Inventor 罗永松陆阳赵梦龙罗荣杰曾凡梅张英歌
Owner XINYANG NORMAL UNIVERSITY
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