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Preparation of ZnMn2O4/Mn2O3 composite material and method for testing electrochemical performance of ZnMn2O4/Mn2O3 composite material

A technology of composite materials and testing methods, applied in the direction of material electrochemical variables, electrochemical generators, hybrid capacitor electrodes, etc., can solve problems such as large particles, high energy consumption, and small specific capacitance of electrode materials

Inactive Publication Date: 2019-05-28
SHAOXING UNIVERSITY
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Problems solved by technology

The operation process of this method is more complicated, the required temperature is higher, and the energy consumption is more
[0007] (2) Due to the high calcination temperature in the prior art, the obtained material is in the form of lumps, which needs to be pulverized before it can be used. The pulverized particles are relatively large, and the specific capacitance as an electrode material is small
In order to solve the shortcomings of the existing technology and obtain materials with higher specific capacitance, it is necessary to invent a new synthetic route

Method used

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  • Preparation of ZnMn2O4/Mn2O3 composite material and method for testing electrochemical performance of ZnMn2O4/Mn2O3 composite material
  • Preparation of ZnMn2O4/Mn2O3 composite material and method for testing electrochemical performance of ZnMn2O4/Mn2O3 composite material
  • Preparation of ZnMn2O4/Mn2O3 composite material and method for testing electrochemical performance of ZnMn2O4/Mn2O3 composite material

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Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0038] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0039] Such as figure 1 As shown, the ZnMn provided by the embodiment of the present invention 2 o 4 / Mn 2 o 3 The preparation method of composite material is:

[0040] S101: dissolving KOH and NaOH with deionized water to make solution A;

[0041] S102: Add 0.5mol / L of Zn(CH 3 COO) 2 The solution was poured into 1.0mol / L Mn(CH 3 COO) 2 The solution is dubbed solution B;

[0042] S103: Add solution A to solution B dropwise under stirring condition;

[0043] S104: After the ...

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Abstract

The invention belongs to the technical field of composite material preparation, and discloses preparation of a ZnMn2O4 / Mn2O3 composite material and a method for testing the electrochemical performanceof the ZnMn2O4 / Mn2O3 composite material. The preparation method of the composite material comprises the following steps: dissolving KOH and NaOH with deionized water to prepare a solution A; pouring0.5 mol / L of Zn (CH3COO) 2 solution into 1.0 mol / L of Mn (CH3COO) 2 solution to prepare a solution B; dropwise adding the solution A into the solution B; transferring the mixed solution into a high-pressure kettle, reacting at 180 DEG C for 24 hours, naturally cooling to room temperature, and centrifugally separating a product; and placing the centrifuged substance in a tubular furnace, calciningfor 5 hours at 500 DEG C in an air atmosphere, and naturally cooling. By comparing the impedance curves of the material before and after charging and discharging, the material has good stability, andan electrochemical test shows that the material has good rate capability and cycle performance.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, in particular to a ZnMn 2 o 4 / Mn 2 o 3 Preparation of composite materials and testing methods for their electrochemical properties. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] In recent years, with the development of new energy materials, lithium-ion batteries and supercapacitors have attracted more and more attention. A supercapacitor is a new type of energy storage device, also known as an electrochemical capacitor. In terms of energy storage, compared with other energy storage devices, it has higher specific capacitance and specific power, and has significant advantages in cycle life and other aspects. The current research on supercapacitors is mainly to study its electrode materials and electrolytes. Common materials used as supercapacitor electrodes include carbon materials, conducti...

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Application Information

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IPC IPC(8): H01M4/36H01M4/50H01M4/58H01M10/36H01M10/38H01G11/86H01G11/24H01G11/46G01N27/30G01N27/48
CPCY02E60/10Y02P70/50
Inventor 丁伟王高军王象
Owner SHAOXING UNIVERSITY
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