Synthesis method of PEDOT loaded graphene

A synthesis method and graphene technology, applied in the field of material chemistry, can solve the problems of severe aggregation, phase separation, poor dispersion, and difficulty in obtaining nanocomposites

Inactive Publication Date: 2019-03-01
上海萃励电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The original discoverers Novoselov and Geim used mechanical exfoliation to prepare graphene. At present, graphene is usually prepared in large quantities by chemical reduction or thermal reduction of graphene oxide, but the dispersion is poor and the com

Method used

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  • Synthesis method of PEDOT loaded graphene

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] 0.01molL -1 EDOT monomer is dissolved in 50mL isopropanol, and 3gL is added -1 Graphite oxide is ultrasonically stirred and dispersed to form a sol; 0.05molL -1 Dissolve ferric chloride in 30mL deionized water solution, slowly add to the first sol, continue to stir during the addition, to obtain the mixed mother liquor; add 20mL 0.3molL -1 Potassium iodide solution, keep stirring at room temperature and react for 24 hours to get a precipitate, wash and dry the precipitate to get figure 1 The PEDOT shown supports graphene powder, and the PEDOT laminated sheets are attached to the graphene. After the powder is compacted by a cold press, the conductivity is 101S / cm.

Embodiment 2

[0012] 0.04molL -1 EDOT monomer is dissolved in 50mL isopropanol, and 2gL is added -1 Graphite oxide is ultrasonically stirred and dispersed to form a sol; 0.12molL -1 Dissolve ferric chloride in 30mL deionized water solution, slowly add to the first sol, continue to stir during the addition, to obtain the mixed mother liquor; add 20mL 0.5molL -1 The potassium iodide solution was stirred and reacted at room temperature for 8 hours to obtain a precipitate, and the precipitate was washed and dried to obtain PEDOT-supported graphene powder. The electrical conductivity of the powder after compaction with a cold press is 108S / cm.

Embodiment 3

[0014] 0.03molL -1 EDOT monomer is dissolved in 50mL isopropanol, and 1gL is added -1 Graphite oxide is ultrasonically stirred and dispersed to form a sol; 0.2molL -1 Dissolve ferric chloride in 30mL deionized water solution, slowly add to the first sol, continue to stir during the addition, to obtain the mixed mother liquor; add 20mL 0.8molL -1 The potassium iodide solution was stirred and reacted at room temperature for 8 hours to obtain a precipitate, and the precipitate was washed and dried to obtain PEDOT-supported graphene powder. After the powder is compacted by a cold press, the conductivity is 97S / cm.

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Abstract

The invention provides a synthesis method of PEDOT loaded grapheme. The synthesis method of PEDOT loaded graphene is characterized in that the synthesis method of the PEDOT loaded grapheme comprises the following steps that EDOT monomer is dissolved in isopropanol, graphite oxide is added, ultrasonically stirring and dispersing are carried out to form sol; ferric trichloride is dissolved in a deionized water solution, the mixture is slowly added into first sol, and continuously stirring is carried out during the adding process to obtain mixed mother liquor; a potassium iodide solution is added, continuously stirring and reacting at room temperature for 8-24 hours are carried out to obtain precipitate, the precipitate is washed and dried to obtain PEDOT loaded graphene powder. All the raw materials are common cheap chemicals, are synthesized by adopting a green process, PEDOT obtained by in-situ polymerization in the graphite oxide sol is uniformly modified on graphene oxide, then KI isused for reducing graphite oxide, and a product I2 is absorbed by PEDOT, so that uniform modification of the PEDOT on the surface of reduced highly conductive graphene is achieved, and the effect ofsynergistically increasing conductivity is achieved.

Description

Technical field [0001] The invention belongs to the technical field of material chemistry, and relates to a method for synthesizing PEDOT-loaded graphene. Background technique [0002] PEDOT has the characteristics of simple molecular structure, small energy gap, and high conductivity. It is widely used in the research of organic thin-film solar cell materials, OLED materials, and secondary batteries. The conductivity of intrinsic state PEDOT is very low, and the conductivity can be greatly improved by doping. Organic acids such as PSS, hydrochloric acid, iodine molecule, p-toluenesulfonic acid, camphorsulfonic acid, etc. are all dopants that can effectively improve the conductivity. Since Novoselov and Geim discovered a two-dimensional carbon allotrope composed of a single layer of atoms-graphene, its excellent electrical conductivity, mechanical properties and thermal stability have attracted widespread attention. Graphene is used as a matrix and PEDOT composite shows broad ap...

Claims

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Application Information

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IPC IPC(8): C01B32/184C08G61/12C08K3/04
CPCC01B32/184C08G61/126C08K3/042
Inventor 汪元元
Owner 上海萃励电子科技有限公司
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