Preparation method of composite electrode material based on three-dimensional graphene/manganic manganous oxide

A technology of trimanganese tetraoxide and composite electrodes, which is applied in the field of physics, can solve the problems of low specific surface area of ​​porous nickel, unfavorable ion transport channels, and low uniformity of pores, and achieve high utilization rate, large quantity, and high conductivity. Effect

Active Publication Date: 2016-08-10
西安海辰兴新材料科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the shortcomings of this method are as follows: firstly, the method adopts the step anodic oxidation method to make pores on nickel metal, and the uniformity of the pores is not high, which is not conducive to the formation of uniform ion transport channels.
Second, the method adopts the step anodic oxidation method to prepare the porous nickel specific surface area is not high

Method used

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  • Preparation method of composite electrode material based on three-dimensional graphene/manganic manganous oxide
  • Preparation method of composite electrode material based on three-dimensional graphene/manganic manganous oxide
  • Preparation method of composite electrode material based on three-dimensional graphene/manganic manganous oxide

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Embodiment 1

[0052] Example 1: Preparation of a three-dimensional graphene / manganese tetraoxide composite electrode with a growth time of 20 minutes for trimanganese tetroxide.

[0053] Step 1: Substrate pretreatment.

[0054] Use a flattener to thin the foamed nickel sheet with a thickness of 1.6mm to obtain a foamed nickel sheet with a thickness of 0.25mm, then clean the foamed nickel sheet with ethanol, deionized water, and 5M HCl solution, and finally use deionized water to remove the foamed nickel sheet. After cleaning, the foamed nickel flakes after cleaning are obtained.

[0055] Step 2: Electrochemical deposition of copper.

[0056] The electrochemical three-electrode method is adopted, in which the working electrode is a foamed nickel sheet, the reference electrode is Ag / AgCl, and the auxiliary electrode is Pt, and the cleaned foamed nickel sheet is placed in 2M CuSO 4 ·5H 2 O and 1M HBO 3 In the mixed solution, add the electrochemical deposition voltage of -0.5V, deposit for ...

Embodiment 2

[0069] Example 2: Preparation of a three-dimensional graphene / manganese tetraoxide composite electrode with a growth time of 30 minutes for trimanganese tetraoxide.

[0070] Step A: Substrate pretreatment.

[0071] Use a flattener to thin the foamed nickel sheet with a thickness of 1.6mm to obtain a foamed nickel sheet with a thickness of 0.25mm, then clean the foamed nickel sheet with ethanol, deionized water, and 5M HCl solution, and finally use deionized water to remove the foamed nickel sheet. After cleaning, the foamed nickel flakes after cleaning are obtained.

[0072] Step B: Electrochemical deposition of copper.

[0073] The electrochemical three-electrode method is adopted, in which the working electrode is a foamed nickel sheet, the reference electrode is Ag / AgCl, and the auxiliary electrode is Pt, and the cleaned foamed nickel sheet is placed in 2M CuSO 4 ·5H 2 O and 1M HBO 3 In the mixed solution, add the electrochemical deposition voltage of -1V, deposit for 1...

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Abstract

The invention discloses a preparation method of a composite electrode material based on three-dimensional graphene / manganic manganous oxide. The preparation method comprises the steps of growing the graphene on three-dimensional foamed copper nickel alloy according to a chemical vapor deposition method; then eliminating the copper nickel alloy, preparing the self-supported three-dimensional graphene with multiple channel holes; and finally, dipping the three-dimensional graphene into a mixed solution which comprises potassium permanganate and sodium nitrate, and growing the manganic manganous oxide on the three-dimensional graphene, thereby preparing the three-dimensional graphene / manganic manganous oxide composite electrode material. The three-dimensional graphene / manganic manganous oxide composite electrode material preparing according to the preparation method has a multichannel netted structure and furthermore has advantages of large number of ion transportation channels, superhigh specific surface area and high conductivity. The three-dimensional graphene / manganic manganous oxide composite electrode material can be used for preparing the composite electrode of a supercapacitor and the composite electrode of other energy storage elements.

Description

technical field [0001] The invention belongs to the field of physical technology, and further relates to a preparation method of a three-dimensional graphene / trimanganese tetraoxide composite electrode material in the field of material science and electrochemical technology. The composite electrode material prepared by the invention can be used to prepare composite electrodes of supercapacitors, and can also be used to prepare composite electrodes of other energy storage elements. Background technique [0002] Supercapacitors have become a new class of energy storage components due to their advantages such as high power density, short charge and discharge time, no pollution, and long cycle life. Electrode materials for supercapacitors include carbon-based electrode materials, metal oxide electrode materials, and conductive polymer electrode materials. With the increasing attention to energy issues, it is an urgent problem to seek an electrode material with advantages such a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/24H01G11/30H01G11/36H01G11/46
CPCY02E60/13H01G11/86H01G11/24H01G11/30H01G11/36H01G11/46
Inventor 宁静王东张进成陆芹穆美珊郝跃
Owner 西安海辰兴新材料科技有限公司
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