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Preparation method of manganese sesquioxide hierarchical-structure material

A manganese trioxide, hierarchical structure technology, applied in manganese oxide/manganese hydroxide, nanotechnology for materials and surface science, structural parts, etc., can solve the problem of less research on preparation methods, and achieve easy control of operation. , Low preparation cost, rich void effect

Inactive Publication Date: 2016-08-24
BOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The morphology and structure of the nano-sized manganese trioxide material determine its physical and chemical properties. There are few studies on the preparation method of the manganese trioxide grade structure material. The present invention discloses a preparation method of the manganese trioxide grade structure material

Method used

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  • Preparation method of manganese sesquioxide hierarchical-structure material
  • Preparation method of manganese sesquioxide hierarchical-structure material
  • Preparation method of manganese sesquioxide hierarchical-structure material

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Manganese nitrate and oxalic acid were formulated into aqueous solutions, and the manganese nitrate aqueous solution was added dropwise to the oxalic acid aqueous solution at 20°C and the stirring speed was 150 rpm. The molar concentration of manganese nitrate aqueous solution is 0.05 mol / L, and the molar concentration of oxalic acid aqueous solution is 0.5 mol / L. The molar ratio of manganese nitrate and oxalic acid is 1:10. The rate of dropping manganese nitrate aqueous solution is 180 drops / min, and the reaction time under stirring condition is 10 minutes. After the reaction is completed, filter and wash with water and dry. The drying time is 3 hours, the drying temperature is 60°C, and the heating rate is 10°C. / minute. Then calcination was carried out in a muffle furnace, the calcination temperature was 400 °C, the calcination time was 2 h, and the heating rate was 10 °C / min. After natural cooling, the target product is obtained.

[0034] The product is a sheet-l...

Embodiment 2

[0036] Manganese chloride and oxalic acid were formulated into aqueous solutions, and the manganese chloride aqueous solution was added dropwise to the oxalic acid aqueous solution at 20°C and the stirring speed was 150 rpm. The molar concentration of manganese chloride aqueous solution is 0.1 mol / L, and the molar concentration of oxalic acid aqueous solution is 0.5 mol / L. The molar ratio of manganese chloride and oxalic acid is 1:50. The rate of dropping the manganese chloride aqueous solution is 180 drops / min, and the reaction time under the stirring condition is 10 minutes. °C / min. Calcination was then carried out in a muffle furnace, the calcination temperature was 350 °C, the calcination time was 3 h, and the heating rate was 10 °C / min. After natural cooling, the target product is obtained.

[0037]The product is a sheet-like grade structure material assembled from a large number of manganese oxide nanoparticles. The size of the flakes is between 15-20 μm, and the siz...

Embodiment 3

[0039] Manganese chloride and oxalic acid were formulated into aqueous solutions, and the manganese chloride aqueous solution was added dropwise to the oxalic acid aqueous solution at 20°C and the stirring speed was 120 rpm. The molar concentration of manganese chloride aqueous solution is 1.0 mol / L, and the molar concentration of oxalic acid aqueous solution is 2.0 mol / L. The molar ratio of manganese chloride and oxalic acid is 1:10. The rate of dropping the manganese chloride aqueous solution is 180 drops / min, and the reaction time under the stirring condition is 10 minutes. °C / min. Then calcination was carried out in a muffle furnace, the calcination temperature was 400 °C, the calcination time was 2 h, and the heating rate was 20 °C / min. After natural cooling, the target product is obtained.

[0040] The product is a sheet-like grade structure material assembled from a large number of manganese oxide nanoparticles. The size of the flakes is between 15-20 μm, and the si...

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Abstract

The invention belongs to the technical field of functional material preparation and relates to a preparation method of a manganese sesquioxide hierarchical-structure material. The method comprises the following steps: dropwise adding a soluble manganese salt aqueous solution into an oxalic acid aqueous solution; reacting at constant temperature under a stirring condition until precursor precipitate is generated; and after the reaction is over, filtering, washing, drying and calcining to obtain the manganese sesquioxide hierarchical-structure material. The product is a flaky hierarchical-structure material formed by assembling a large quantity of manganese oxide nano particles. The flake size is 10-20mu m, and the size of the manganese oxide nano particles is 20-30nm. With low preparation cost and easiness in operation control, the technology has relatively high production efficiency and can realize industrial mass production. The manganese sesquioxide hierarchical-structure material prepared by the preparation method is used as an electrode material and has relatively high specific capacitance and good cycle performance.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional materials, and in particular relates to a preparation method of a mesogenic material of dimanganese trioxide. Background technique [0002] The concept of hierarchical architecture is to define buildings, bridges and other buildings. In the field of micro-nano materials research, this concept is borrowed, usually called hierarchical structure materials. Hierarchical structural material forms are divided into different grades, the higher grades are composed of lower grade building blocks, and the higher grades control or take precedence over the lower grades. For hierarchical structural materials, the assembly method of the assembly unit is extremely important, and the difference in the assembly method will lead to the difference in the form and performance of the final hierarchical structural material. [0003] Manganese trioxide (Mn 2 o 3 ) has a wide range of uses, and its ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/02H01M4/50H01G11/46B82Y30/00
CPCB82Y30/00C01G45/02C01P2002/72C01P2004/03C01P2004/20C01P2004/50C01P2004/61C01P2006/80H01G11/46H01M4/502Y02E60/10
Inventor 许家胜王涵张杰王琳孙誉东张霞王莉丽钟克利唐克邢锦娟张艳萍刘琳钱建华
Owner BOHAI UNIV
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