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A kind of flower-shaped manganese cobaltate and preparation method thereof

A manganese cobaltate and flower-like technology, which is applied in the field of inorganic transition metal composite oxide material synthesis, can solve the problems of complicated and complicated preparation methods of flower-like manganese cobaltate, achieve easy implementation of control conditions and means, and improve electrochemical energy storage. The effect of performance, process method short answer

Inactive Publication Date: 2017-04-05
HEBEI UNIV OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the deficiencies in the prior art, the main technical problem to be solved by the present invention is to provide a flower-shaped manganese cobaltate and its preparation method, to provide flower-shaped manganese cobaltate with a new structure and to solve the problem that the existing flower-shaped manganese cobaltate preparation method is too cumbersome and complicated. The problem

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  • A kind of flower-shaped manganese cobaltate and preparation method thereof
  • A kind of flower-shaped manganese cobaltate and preparation method thereof
  • A kind of flower-shaped manganese cobaltate and preparation method thereof

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Embodiment 1

[0029] The flower-like structure of the flower-like manganese cobaltate provided in the examples is formed by assembling nanosheets and solid cores. The nanosheets are arranged on the surface of the solid core and intertwined with each other. The average thickness of the nanosheets in this embodiment is 5nm to 60nm. For example, the average thickness of the nanosheets is 5nm, 10nm, 15nm, 30nm, 60nm, etc. The specific thickness can be prepared according to specific needs; the solid core in this embodiment The average size of the solid core is 0.1 μm to 1.0 μm, and the specific average size of the solid core body can be 0.1 μm, 0.3 μm, 0.5 μm, 0.7 μm, 1.0 μm and so on.

[0030] This embodiment also provides a method for preparing the flower-shaped manganese cobaltate as described above, please refer to figure 1 shown, including:

[0031] Step 101: dissolving cobalt acetate and manganese acetate in ethylene glycol, adding surfactant sodium lauryl sulfate, stirring evenly to for...

Embodiment 2

[0040] In order to better understand the present invention, the present invention will be further described below in conjunction with a specific preparation example.

[0041] Weigh 0.37g cobalt acetate (Co(Ac) 2 4H 2 O) and 0.18g manganese acetate (Mn(Ac) 2 4H 2 O) dissolved in 30ml ethylene glycol (Co 2+Concentration is 50mmol / l), then add 0.29g sodium dodecyl sulfate (SDS, Co 2+ : and SDS molar ratio is 1.5), after stirring evenly, the solution is transferred to a 50ml stainless steel hydrothermal kettle, heated to 160°C and kept for 15h, after the reaction, the product is separated, washed, dried, and then roasted at 350°C for 2h to obtain a black powder product .

[0042] The black powder product prepared above was subjected to an XRD test on an X'Pert PROMPD multifunctional X-ray diffractometer produced by Panalytical Company of the Netherlands (Panalytical). figure 2 It is the XRD spectrum of the black powder product obtained in this example, and the diffraction p...

Embodiment 3

[0050] In order to better understand the present invention, the present invention will be further described below in conjunction with a specific preparation example.

[0051] Weigh 0.67g cobalt acetate (Co(Ac) 2 4H 2 O) and 0.33g manganese acetate (Mn(Ac) 2 4H 2 O) dissolved in 30ml ethylene glycol (Co 2+ Concentration is 90mmol / l), then add 0.78g sodium dodecyl sulfate (SDS, Co 2+ : and SDS molar ratio is 1.0), after stirring evenly, the solution is transferred to a 50ml stainless steel hydrothermal kettle, heated to 190°C and kept for 6h, after the reaction, the product is separated, washed, dried, and then roasted at 350°C for 2h to obtain a black powder product . XRD spectrum analysis product is manganese cobaltate with spinel structure. SEM photos show that the product is a flower-like structure, which is formed by the assembly of solid core and outer flexible nanosheets, and its size is 2 μm to 3 μm. The molar ratio of cobalt and manganese elements measured by EDS...

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Abstract

The invention provides flower-like manganese cobalt oxide and a preparation method thereof, and belongs to the field of inorganic transition-metal oxide material synthesis. The flower-like manganese cobalt oxide is formed by commonly assembling a nano-sheet and a solid core body. The flower-like manganese cobalt oxide is prepared by the following steps: dissolving cobalt acetate and manganese acetate in ethylene glycol, adding a surfactant lauryl sodium sulfate, and uniformly stirring to form a mixed solution; adding the mixed solution into a reaction kettle to conduct a solvothermal reaction, and separating and washing to obtain a product after the solvothermal reaction is completed; and roasting the prepared product to obtain the flower-like manganese cobalt oxide. The preparation process is simple and convenient in method, simple and direct in process and easy to implement.

Description

technical field [0001] The invention relates to the technical field of synthesis of inorganic transition metal composite oxide materials, in particular to a flower-shaped manganese cobaltate and a preparation method thereof. Background technique [0002] Spinel-structure cobalt-manganese composite metal oxides such as manganese cobaltate (MnCo 2 o 4 ) has great application potential in the fields of magnetic semiconductors, lithium-ion battery electrode materials, and supercapacitor electrode materials due to its excellent electrical and magnetic properties. It is well known that the morphology and microstructure of materials are crucial to their physical and chemical properties. Therefore, manganese cobalt oxide materials with different morphologies have been synthesized successively, such as nanowires, nanosheets, porous microspheres, core-shell microspheres, hollow spheres, etc. with one-dimensional, two-dimensional or three-dimensional structures. In particular, the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G51/00B82Y40/00B82Y30/00
CPCC01G51/40C01P2002/72C01P2004/03C01P2004/04C01P2004/50C01P2004/61C01P2006/12
Inventor 刘爱凤车红卫
Owner HEBEI UNIV OF ENG
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