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Graphite oxide/polyaniline/hollow tubular manganese dioxide composite material and synthesis method thereof

A technology for composite materials and synthesis methods, applied in the field of graphite oxide/polyaniline/hollow tubular manganese dioxide composite materials and their synthesis, can solve the problems of limited application, poor conductivity, etc., and achieve the overall shape and simple method , the effect of good performance

Inactive Publication Date: 2017-05-10
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to poor electrical conductivity and inherent defects in morphology, its application in supercapacitors is limited.

Method used

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  • Graphite oxide/polyaniline/hollow tubular manganese dioxide composite material and synthesis method thereof
  • Graphite oxide/polyaniline/hollow tubular manganese dioxide composite material and synthesis method thereof
  • Graphite oxide/polyaniline/hollow tubular manganese dioxide composite material and synthesis method thereof

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Embodiment 1

[0028] This embodiment synthesizes graphite oxide / polyaniline / hollow tubular manganese dioxide composite material according to the following steps:

[0029] (1) Prepare graphite oxide (GO) according to the improved Hummers method, the specific steps are as follows:

[0030] Weigh 1g of graphite powder and put it into a round bottom flask, then put it into a magnet, put the beaker in an ice-water bath environment and fix it on a magnetic stirrer, the whole experiment process is accompanied by stirring; add 98% concentrated sulfuric acid, then add 3.5g of potassium permanganate (note that the potassium permanganate should be added evenly within 10min), and then keep stirring in the ice water bath for 5min; remove the ice water bath environment, and put the whole The experiment was transferred to a warm water bath at 25°C and stirred for 24 hours; the entire experimental environment was transferred to an ice water bath again, and diluted with 200 mL of deionized water in a washin...

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Abstract

The invention discloses a graphite oxide / polyaniline / hollow tubular manganese dioxide composite material and a synthesis method thereof. In the graphite oxide / polyaniline / hollow tubular manganese dioxide composite material, a layer of polyaniline is grown on a surface of a sheet-shaped graphite oxide, and hollow tubular manganese dioxide is grown on a surface of the polyaniline. The method is simple, the obtained product is uniform in morphology, the advantages of the graphite oxide, the polyaniline and the manganese dioxide are combined, and the graphite oxide / polyaniline / hollow tubular manganese dioxide composite material has better performance when used as an electrode material of a supercapacitor.

Description

technical field [0001] The invention relates to the fields of supercapacitors and nanomaterial synthesis, in particular to a graphite oxide / polyaniline / hollow tubular manganese dioxide composite material and a synthesis method thereof. Background technique [0002] As a new type of energy storage device that combines the advantages of traditional capacitors and secondary batteries, supercapacitors can provide higher energy density than traditional capacitors, as well as better power density and cycle life than secondary batteries, and are expected to be widely used in Energy conversion, aerospace systems, communication engineering and microelectronic devices and other fields. From the perspective of energy storage mechanism, supercapacitors mainly include: electric double layer capacitors that use carbon-related materials as electrodes and rely on charge separation on the electrode / electrolyte surface to store energy; polymers and metal oxides as electrodes, relying on elect...

Claims

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Application Information

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IPC IPC(8): H01G11/48H01G11/86C08G73/02
CPCY02E60/13H01G11/48C08G73/0266H01G11/86
Inventor 李强李国金付广胜韩军建
Owner HEFEI UNIV OF TECH
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