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Preparation method of gamma type magnesium dioxide nanowire bundle

A manganese dioxide nanometer and wire harness technology is applied in manganese oxide/manganese hydroxide, nanotechnology, nanotechnology and other directions to achieve the effects of shortening reaction time, high product yield and low production cost

Inactive Publication Date: 2016-06-08
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing δ-type manganese dioxide nanowire bundle preparation method, and provide a δ-type manganese dioxide with simple method, less sodium hydroxide consumption, low production cost and high product yield. Preparation method of manganese nanowire bundle

Method used

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  • Preparation method of gamma type magnesium dioxide nanowire bundle
  • Preparation method of gamma type magnesium dioxide nanowire bundle
  • Preparation method of gamma type magnesium dioxide nanowire bundle

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Quickly add 60mL of 4mol / L sodium hydroxide aqueous solution into 40mL of 30% hydrogen peroxide aqueous solution, mix well, and quickly add the resulting mixture into 200mL of 0.3mol / L manganese nitrate aqueous solution, and mechanically stir for 30 minutes Stand and age for 1 hour, filter with suction, wash with distilled water until neutral, add the obtained filter cake into 100mL of 1mol / L sodium hydroxide aqueous solution, stir evenly, transfer to a polytetrafluoroethylene reactor, in a homogeneous reactor After hydrothermal reaction at 150°C for 20 hours, the reaction product was suction filtered, washed with distilled water until neutral, and dried at room temperature to obtain 5.2 g of brown δ-type manganese dioxide nanowire bundles.

[0025] The obtained δ-type manganese dioxide nanowire bundles were characterized by RigakuMiniFlax600 X-ray diffractometer for crystal phase; HitachiTM3000 scanning electron microscope and HitachiJEM-2100 transmission electron micro...

Embodiment 2

[0028] In the present embodiment, 150 ℃ hydrothermal reaction in homogeneous reactor 16 hours, other steps are the same as embodiment 1, obtain 4.8g brown δ-type manganese dioxide nanowire bundles (see Figure 5 ), its diameter is 10-50nm, its length is 10-60μm, when the current density is 0.25A / g, its mass specific capacity is 188F / g.

Embodiment 3

[0030] In the present embodiment, 150 ℃ of hydrothermal reaction in homogeneous reactor 24 hours, other steps are the same as embodiment 1, obtain 5.3g brown δ type manganese dioxide nanowire bundles (see Figure 6 ), with a diameter of 10-50nm and a length of 10-80μm. When the current density is 0.25A / g, its mass specific capacity is 191F / g.

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Abstract

The invention discloses a preparation method of a gamma type magnesium dioxide nanowire bundle, and belongs to the technical field of preparation of semiconductor materials. The preparation method comprises the following steps of using manganese nitrate as a manganese source, and performing simple redox reaction to directly obtain layered manganese dioxide with low crystalline; performing hydrothermal treatment on the layered manganese dioxide with low crystalline in a sodium hydroxide solution, so as to obtain the gamma type magnesium dioxide nanowire bundle with high crystalline, wherein the diameter is 10-50nm, and the length is 10-100mum. The preparation method has the advantages that the method is simple, the usage amount of sodium hydroxide is less, the production cost is low, the product yield is high, the electrochemical property is excellent, and the gamma type magnesium dioxide nanowire bundle can be used as an electrode material of supercapacitors and lithium ion secondary cells.

Description

technical field [0001] The invention belongs to the technical field of semiconductor material preparation, and in particular relates to a preparation method of an ultra-long δ-type manganese dioxide nanowire bundle. Background technique [0002] Manganese dioxide is a transition metal oxide with important industrial uses. It has ion exchange and molecular adsorption properties and can be used as ion sieve, molecular sieve and catalyst. At the same time, it has superior electrochemical performance. The results of the study show that the performance of manganese dioxide nanomaterials is better than that of its bulk materials in terms of electron conduction and ion transport. [0003] The structural unit constituting the manganese dioxide crystal is formed by the coordination of 1 manganese atom and 6 oxygen atoms [MnO 6 ] octahedron. The manganese atom is in the center of the octahedron, and the oxygen atoms are in the vertices of the octahedron respectively, [MnO 6 ]Octah...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/02B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G45/02C01P2004/16C01P2004/61C01P2004/64
Inventor 刘宗怀王璐
Owner SHAANXI NORMAL UNIV
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