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Method for preparing manganese dioxide/carbon microsphere electrode by organic matter electrolytic process

A manganese dioxide and carbon microsphere technology, applied in the field of material chemistry, can solve the problems of high energy consumption, complex manganese dioxide/carbon microsphere electrode process, etc. Effect

Inactive Publication Date: 2016-02-03
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a kind of method that utilizes organic matter electrolysis to prepare manganese dioxide / carbon microsphere electrode, and described method for utilizing organic matter electrolysis to prepare manganese dioxide / carbon microsphere electrode solves the problems in the prior art Manganese dioxide / carbon microsphere electrode prepared by hydrothermal method is complicated in process and technical problem of high energy consumption

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  • Method for preparing manganese dioxide/carbon microsphere electrode by organic matter electrolytic process
  • Method for preparing manganese dioxide/carbon microsphere electrode by organic matter electrolytic process
  • Method for preparing manganese dioxide/carbon microsphere electrode by organic matter electrolytic process

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Embodiment 1

[0017] A kind of method utilizing organic matter electrolysis of the present invention to prepare manganese dioxide / carbon microspheres specifically comprises the following steps:

[0018] (1) With stainless steel electrode as cathode, platinum sheet electrode as anode, manganese nitrate with a concentration of 0.001mol / L and NMP aqueous solution with a volume concentration of 0.1 as electrolyte, under the condition of 50℃, constant voltage 100v, electrolysis 30min. After electrolysis, the product obtained on the cathode is rinsed with deionized water, and then dried at 80° C. to obtain a manganese dioxide / carbon microsphere electrode.

Embodiment 2

[0020] A kind of method utilizing organic matter electrolysis of the present invention to prepare manganese dioxide / carbon microspheres specifically comprises the following steps:

[0021] (1) Using the Ti sheet electrode as the cathode, the platinum sheet electrode as the anode, and the NMP aqueous solution containing manganese nitrate with a concentration of 0.001mol / L and a volume concentration of 0.1 as the electrolyte, under the condition of 50°C, a constant voltage of 200v, Electrolysis for 30min. After electrolysis, the product obtained on the cathode is rinsed with deionized water, and then dried at 80° C. to obtain a manganese dioxide / carbon microsphere electrode.

Embodiment 3

[0023] A kind of method utilizing organic matter electrolysis of the present invention to prepare manganese dioxide / carbon microspheres specifically comprises the following steps:

[0024] (1) The stainless steel sheet electrode is used as the cathode, the platinum sheet electrode is used as the anode, the manganese nitrate solution with a concentration of 0.005mol / L and the NMP aqueous solution with a volume concentration of 0.1 are used as the electrolyte, and the constant voltage is 5v at 50°C. Electrolysis 8h. After electrolysis, the product obtained on the cathode is rinsed with deionized water, and then dried at 80° C. to obtain a manganese dioxide / carbon microsphere electrode.

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Abstract

The invention discloses a method for preparing a manganese dioxide / carbon microsphere electrode by an organic matter electrolytic process. The method comprises the following steps: with inert electrodes as a cathode and an anode, and a water solution containing an organic reagent and manganate as an electrolyte, carrying out an electrolysis in a constant-voltage manner, wherein the voltage is 1V to 300V and the control temperature is 25-90 DEG C; and washing the product obtained from the cathode with deionized water after electrolysis is ended, and then drying the product to obtain the manganese dioxide / carbon microsphere electrode. In the water solution containing the organic reagent and the manganate, the concentration of manganese ions is 0.001-0.01mol / L; the volume concentration of the organic reagent is 0.05-0.5; and the organic reagent is one or a mixture of more than two of n-methyl pyrrolidone, methanol, ethanol or acetone. According to the method disclosed by the invention, catalytic action of Mn ions is adopted in a preparation process, so that decomposition voltage of an organic matter is reduced; the method has the effects of safety and low energy consumption; the deposition rate of the material is effectively improved; and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the field of material chemistry and relates to an electrode material for a supercapacitor, in particular to a manganese dioxide / carbon composite material, specifically a method for preparing a manganese dioxide / carbon microsphere electrode by electrolysis of organic matter. Background technique [0002] Supercapacitor is a new type of energy storage and conversion device, which has the advantages of high energy density, fast charge and discharge, long life, low pollution, etc. It is widely used in electric vehicles and various electronic products, and the electrode material is for its main factor affecting performance. [0003] Currently, MnO 2 Due to its excellent electrochemical properties, it is generally considered to be the most likely RuO 2 materials of substitutes, however pure MnO 2 It has the limitations of poor conductivity and low performance utilization. The composite material of manganese dioxide / carbon microsp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/30H01G11/42H01G11/46
Inventor 张全生雷天辉张立恒张道明霍梦飞任桢
Owner SHANGHAI INST OF TECH
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