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Preparation method and application of manganese dioxide electrode

A manganese dioxide electrode, divalent manganese technology, applied in manganese oxide/manganese hydroxide, positive electrode, battery electrode and other directions, can solve the problems of high cost of raw materials, serious environmental pollution, difficult to obtain biomass sources, etc. Excellent chemical properties, good effect

Active Publication Date: 2019-12-13
REHAB QINGDAO ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cost of raw materials in this method is high, the source of biomass is difficult to obtain, and organic substances such as aniline and pyrrole cause serious environmental pollution, which does not meet the current theme of green chemistry

Method used

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  • Preparation method and application of manganese dioxide electrode
  • Preparation method and application of manganese dioxide electrode
  • Preparation method and application of manganese dioxide electrode

Examples

Experimental program
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Embodiment 1

[0031] Dissolve 0.01mol of manganese sulfate in 250mL of deionized water, then add 1mL of hydrogen peroxide solution with a mass fraction of 30%, dissolve 0.02mol of sodium hydroxide solid in 50mL of deionized water, and after it is completely dissolved, add it to sulfuric acid In the mixed solution of manganese and hydrogen peroxide, the pH is 7.19, and it is magnetically stirred at room temperature for 24 hours (350 rpm). After 24 hours, the centrifuge centrifuged the material (3000rpm, 5 minutes), rinsed it three times with deionized water, and then put it into a constant temperature oven at 80 degrees Celsius to dry it under vacuum for 24 hours. After being dried, the obtained solid matter is ground into powder, put into a tube furnace and calcined at 250 degrees centigrade for 6 hours, and after natural cooling, manganese dioxide powder ( figure 1 ). XRD test results such as figure 2 As shown, through further XRD image verification, the manganese dioxide prepared by th...

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Abstract

The invention provides a preparation method of a manganese dioxide electrode (epsilon-MnO2). The method comprises the following steps: mixing a divalent manganese salt, hydrogen peroxide, an alkali metal hydroxide and water; carrying out centrifugal treatment on the mixed treatment product to obtain a centrifugal precipitate; and calcining the centrifugal precipitate to obtain the manganese dioxide electrode. The method is low in production cost, simple in process, convenient to operate, easy to control and environmentally friendly, and the prepared manganese dioxide electrode material has excellent electrochemical performance and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the field of energy material synthesis, in particular, the invention relates to a preparation method and application of a manganese dioxide electrode. Background technique [0002] Manganese dioxide is a transition metal oxide with important industrial uses. It has ion exchange and molecular adsorption properties and can be used as ion sieve, molecular sieve and catalyst. At the same time, it has superior electrochemical performance. [0003] At present, the method for preparing manganese dioxide mainly uses permanganate as an oxidizing agent to react with reducing agents such as organic matter such as aniline and pyrrole, biomass such as kiwi fruit and fresh jujube extract, or elemental carbon. However, the cost of raw materials in this method is high, the source of biomass is difficult to obtain, and organic substances such as aniline and pyrrole cause serious environmental pollution, which does not meet the current theme of...

Claims

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Application Information

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IPC IPC(8): C01G45/02H01M4/505H01M10/054
CPCC01G45/02C01P2002/72H01M4/505H01M10/054H01M2004/028Y02E60/10
Inventor 史秋羽刘昱陈璞
Owner REHAB QINGDAO ENERGY TECH CO LTD
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