Method for preparing cobaltous oxide/graphene nanometer composite material

A nano-composite material and graphene technology, which is applied in the field of preparing cobalt oxide/graphene nano-composite materials, can solve the problems of expensive, environmental, and toxic organic substances, and achieve the effect of high loading capacity, simple process, and uniform dispersion
CN104835653AActive Publication Date: 2015-08-12SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
Publication Date
2015-08-12

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Abstract

The invention provides a method for preparing a cobaltous oxide / graphene nanometer composite material, which comprises the steps of performing ultrasonic processing on graphite oxide in deionized water for obtaining graphene oxide solution, dissolving Co(NO3)2.6H2O into the deionized water for obtaining cobaltous nitrate solution, then dripping NH3.H2O, dispersing a generated solid product in the deionized water for preparing cobalt hydroxide colloidal solution; mixing the cobaltous nitrate solution with the cobalt hydroxide colloidal solution, performing washing and drying; and processing at the temperature of 150-500 DEG C for obtaining the cobaltous oxide / graphene nanometer composite material. The method for preparing the cobaltous oxide / graphene nanometer composite material has advantages of simple operation, high speed, large-scale production, and environment-friendly effect.
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Description

[0001] Field

[0002] The invention belongs to a green method for preparing cobalt oxide / graphene nano composite material. technical background

[0003] Composite materials exhibit excellent electrochemical performance due to the synergy between individual components, and have potential application value in supercapacitor electrode materials (Adv. Mater., 2011, 23: 4828; Advanced Materials, 2011 23 Volume: 4828 pages) (Energy Environ.Sci., 2011, 4:1113; Energy and Environmental Science, 2011, Volume 4: 1113 pages). As a new type of carbon material, graphene has a two-dimensional planar single atomic layer structure and a super high specific surface area (2630m 2 g -1 ) and significant electronic conductivity and other unique properties, which make it a good nano-additive for composite functional materials. Recently, many researchers have devoted themselves to the synthesis of nanocomposites of transition metal oxides / hydroxides and graphene (or reduced graphene oxide). (El...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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