Manganese spinel nano material as well as preparation method and application of manganese spinel nano material

A nanomaterial and spinel technology, applied in the field of nanomaterial preparation, can solve the problems of increasing energy consumption, cost, harsh preparation process, etc., and achieve the effects of less energy consumption, high electrocatalytic efficiency, and improved electrocatalytic activity
CN102082270BActive Publication Date: 2013-02-27NANKAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANKAI UNIV
Publication Date
2013-02-27

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Abstract

The invention provides a manganese spinel nano material which comprises CoxMn(3-x)O4, MgMn2O4 and Mn3O4 nano particles as well as ZnMn2O4 hollow nano spheres, hollow micron spheres or nano pieces. The preparation method is as follows: MnO2 is reduced through a reducing agent at room temperature so as to prepare the manganese spinel nano material. The material can form a three-electrode system used for testing the redox property of the material, namely, in the three-electrode system, nano material is used as a working electrode, a Pt sheet is used as a counter electrode, saturated potassium chloride Ag / AgCl is used as a reference electrode and KOH solution is used as electrolyte. The invention has the advantages that the reaction process is carried out at room temperature, and energy source consumption is less; the nano material has a big specific surface area, and is capable of increasing the contact of active substance with oxygen and electrolyte; and the nano material as an electro-catalyst has high electro-catalysis efficiency, and has important value and actual significance in the fields of spinel oxide nano material preparation, electro-catalysis of metal air batteries and fuel cell and the like.
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Description

technical field

[0001] The invention relates to the preparation of nanometer materials, in particular to a kind of manganese series spinel nanomaterials and its preparation method and application. Background technique

[0002] Manganese spinel is a kind of manganese-containing oxides, the chemical formula is A x mn 3-x o 4 (0≤x≤2, A is a metal), is an important inorganic functional material. Due to the large number of manganese valence states, cheap price, non-toxic and environmental protection, manganese spinel is widely used in the fields of cathode catalysts for fuel cells and air batteries, gas-sensitive materials, heat-sensitive materials, magnetic materials, and battery materials.

[0003] In recent years, with the continuous development of nanotechnology, manganese-based spinel nanomaterials have attracted the attention of many researchers as a new type of high-efficiency electrochemical catalyst. At present, the synthesis techniques of manganese-based spinel nano...

Claims

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