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A porous mnco 2 o 4．5 Preparation method of electrode material

A porous structure and spindle technology, which is applied in the preparation of MnCo2O4.5 spindle micro-nano electrode materials and the preparation of supercapacitor electrode materials, achieves the effects of simple preparation process, high specific capacitance and rate performance, and mild conditions

Active Publication Date: 2020-04-24
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, no literature has reported the preparation of porous MnCo by solvothermal 2 o 4.5 Spindle structure and its application in supercapacitor electrodes

Method used

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  • A porous mnco <sub>2</sub> o <sub>4．5</sub> Preparation method of electrode material
  • A porous mnco <sub>2</sub> o <sub>4．5</sub> Preparation method of electrode material
  • A porous mnco <sub>2</sub> o <sub>4．5</sub> Preparation method of electrode material

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A porous MnCo 2 o 4.5 The preparation method of spindle micro-nano material comprises the following steps:

[0031] (1) Dissolve 0.25g of manganese acetate tetrahydrate and 0.5g of cobalt acetate tetrahydrate in a mixed solvent of 40mL of ethanol and water (v:v=1:1), and stir until they are completely dissolved;

[0032] (2) Add 1.2g of urea into the solution prepared in step (1), and stir thoroughly;

[0033] (3) Transfer the solution obtained in step (2) to a reaction kettle, seal it, and react at 140°C for 3 hours;

[0034] (4) After the reaction, the product was collected by centrifugation, washed three times with water and ethanol, and then dried in air at 50°C;

[0035] (5) Transfer the powder product obtained in step (4) to a muffle furnace, and calcinate in air at 450°C for 4h, with a heating rate of 2°C·min -1 , the MnCo with porous structure can be obtained 2 o 4.5 Micro-spindle structure.

[0036] figure 1 Represents the porous MnCo prepared in Exampl...

Embodiment 2

[0039] A kind of MnCo with porous layered spindle structure 2 o 4.5 The preparation method of micro-nano material comprises the following steps:

[0040] (1) Dissolve 0.25g of manganese acetate tetrahydrate and 0.5g of cobalt acetate tetrahydrate in a mixed solvent of 40mL of ethanol and water (v:v=1:1), and stir until they are completely dissolved;

[0041] (2) Add 1.2g of urea into the solution prepared in step (1), and stir thoroughly;

[0042] (3) Transfer the solution obtained in step (2) to the reactor, seal it, and react at 140°C for 9 hours;

[0043] (4) After the reaction, the product was collected by centrifugation, washed three times with water and ethanol, and then dried in air at 50°C;

[0044] (5) Transfer the powder product obtained in step (4) to a muffle furnace, and calcinate in air at 450°C for 4h, with a heating rate of 2°C·min -1 , the MnCo with porous structure can be obtained 2 o 4.5 Lamellar spindle.

[0045] image 3 It is the porous layered sp...

Embodiment 3

[0047] A porous MnCo 2 o 4.5 The preparation method of micro-nano material comprises the following steps:

[0048] (1) Dissolve 0.25g of manganese acetate tetrahydrate and 0.5g of cobalt acetate tetrahydrate in a mixed solvent of 40mL of ethanol and water (v:v=1:1), and stir until they are completely dissolved;

[0049] (2) Add 0.6g of urea into the solution prepared in step (1), and stir thoroughly;

[0050] (3) Transfer the solution obtained in step (2) to a reaction kettle, seal it, and react at 140°C for 3 hours;

[0051] (4) After the reaction, the product was collected by centrifugation, washed three times with water and ethanol, and then dried in air at 50°C;

[0052] (5) Transfer the powder product obtained in step (4) to a muffle furnace, and calcinate in air at 450°C for 4h, with a heating rate of 2°C·min -1 , the MnCo with porous structure can be obtained 2 o 4.5 micro-nano materials.

[0053] Figure 4 It is the porous MnCo prepared in Example 3 2 o 4.5 S...

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Abstract

The present invention discloses a preparation method for porous MnCo2O4.5 electrode materials. The preparation method comprises the following steps of: 1, weighing manganous acetate tetrahydrate and cobaltous acetate tetrahydrate, dissolving the manganous acetate tetrahydrate and cobaltous acetate tetrahydrate into a mixed solvent of ethyl alcohol and water, fully stirring the mixed solvent untilthe manganous acetate tetrahydrate and cobaltous acetate tetrahydrate are completely dissolved; 2, adding urea into a solution prepared in the step 2 for full stirring; 3, transferring the solution obtained in the step 2 into a reactor for seal, and performing reaction for 1-15 hours at the temperature of 100-180 DEG C; 4, performing centrifugation to collect products after the reaction is finished, washing the products for three times by employing ethyl alcohol and water, and performing drying of the products in the air at the temperature of 50 DEG C; and 5, transferring the powder products obtained in the step 4 into a muffle furnace, performing calcinations for 4 hours at the temperature of 450 DEG C in the air, wherein the temperature rise rate is 2 DEG C.min<-1>, the MnCo2O4.5 electrode materials with a porous structure. The preparation method for porous MnCo2O4.5 electrode materials can obtain MnCo2O4.5 electrode materials with different morphologies and sizes through simple control of the reaction parameters.

Description

technical field [0001] The invention relates to the field of preparation of electrode materials, in particular to the preparation of supercapacitor electrode materials, specifically a kind of MnCo with a porous structure 2 o 4.5 Preparation method of spindle micro-nano electrode material. Background technique [0002] The deterioration of the energy crisis has made supercapacitors with excellent characteristics such as high specific capacitance, high power density and long cycle life occupy an indispensable position in various energy storage systems. However, the further application of supercapacitors is largely limited by the limited energy density. It is well known that the specific capacitance of an electrode material is highly dependent on its electrical conductivity, ion diffusion rate, and especially its specific surface area, since a large specific surface area can lead to higher current densities and facilitate rapid ion transport. The type and morphology of mater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/24H01G11/30H01G11/46H01G11/86
CPCH01G11/24H01G11/30H01G11/46H01G11/86Y02E60/13
Inventor 陈慧玉王晋鹏孙家乐廖凡徐春菊
Owner ZHONGBEI UNIV