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A kind of preparation method of graphene and polyaniline composite fiber electrode material

An electrode material and composite fiber technology, which is applied in the field of composite electrode material preparation, can solve the problems of easy dense stacking of graphene sheets, easy aggregation of polyaniline, etc., and achieves easy large-scale preparation, low cost, and simple operation. Effect

Active Publication Date: 2021-12-07
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problems that polyaniline is easy to agglomerate and graphene sheets are easy to densely stack during the composite process of polyaniline and graphene, greatly improves the electrochemical performance of electrode materials, and the method has the advantages of simple operation, low cost, The characteristics of easy large-scale preparation

Method used

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  • A kind of preparation method of graphene and polyaniline composite fiber electrode material
  • A kind of preparation method of graphene and polyaniline composite fiber electrode material
  • A kind of preparation method of graphene and polyaniline composite fiber electrode material

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Embodiment 1

[0033] Embodiment 1: a kind of preparation method of graphene and polyaniline composite fiber electrode material comprises the following steps:

[0034] (1) Polyaniline is cleaned with deionized water and dried to obtain product A; the polyaniline is prepared by rapid polymerization;

[0035] (2) Add 0.006g of product A into 10mL of organic solvent; the organic solvent is N,N-dimethylformamide, ultrasonically disperse for 20min, and magnetically stir for 20min;

[0036] (3) Add 0.6g of graphene oxide into product B, ultrasonically disperse at 5°C for 2h, and then add 10mL of deionized water dropwise under the condition of magnetic stirring to obtain graphene oxide and polyaniline composite gel, namely C product;

[0037] (4) Product C is prepared into fibers by wet spinning technology, and after hydroiodic acid reduction, vacuum drying at 50°C for 26 hours to obtain fiber electrode materials, the electrode materials are made of 1M polyvinyl alcohol (PVA) and sulfuric acid Th...

Embodiment 2

[0038] Embodiment 2: a kind of preparation method of graphene and polyaniline composite electrode material comprises the following steps:

[0039] (1) polyaniline is cleaned with deionized water and dried to obtain product A; the polyaniline is prepared by rapid polymerization;

[0040](2) Add 0.012g of product A into 10mL of organic solvent; the organic solvent is N,N-dimethylformamide, ultrasonically disperse for 30min, and magnetically stir for 40min;

[0041] (3) Add 0.6 g of graphene oxide into product B, ultrasonically disperse at 5°C for 1 h, and then add 10 mL of deionized water dropwise under the condition of magnetic stirring to obtain a composite gel of graphene oxide and polyaniline, namely C product;

[0042] (4) Prepare product C into fibers by wet spinning technology, reduce with hydroiodic acid, and dry in vacuum at 60°C for 24 hours to obtain the electrode material. The electrode material is made of a gel composed of 1M polyvinyl alcohol and sulfuric acid. E...

Embodiment 3

[0043] Embodiment 3: a kind of preparation method of graphene and polyaniline composite fiber electrode material comprises the following steps:

[0044] (1) Polyaniline is cleaned with deionized water and dried to obtain product A; the polyaniline is prepared by rapid polymerization;

[0045] (2) Add 0.03g of product A into 10mL of organic solvent; the organic solvent is N,N-dimethylformamide, ultrasonically disperse for 30min, and magnetically stir for 40min;

[0046] (3) Add 0.6g of graphene oxide into product B, ultrasonically disperse at -3°C for 2h, and then add 10mL of deionized water dropwise under the condition of magnetic stirring to obtain graphene oxide and polyaniline composite gel, i.e. product C;

[0047] (4) Prepare product C into fibers by wet spinning technology, reduce with hydroiodic acid, and dry in vacuum at 70°C for 22 hours to obtain the electrode material. The electrode material is made of a gel composed of 1M polyvinyl alcohol and sulfuric acid. Elec...

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Abstract

The invention discloses a preparation method of graphene and polyaniline composite fiber electrode material. The method comprises the following steps: (1) washing polyaniline with deionized water and drying it to obtain product A; (2) adding product A to an organic solvent, ultrasonically dispersing, and stirring magnetically to obtain product B; (3) preparing graphite oxide Graphene oxide is added to product B, after ultrasonic dispersion at -3~5°C, then deionized water is added dropwise under the condition of magnetic stirring to obtain graphene oxide and polyaniline composite gel, which is product C; (4) Product C is prepared into a fibrous electrode material, undergoes chemical reduction or thermal reduction, and is vacuum-dried to obtain a fibrous electrode material. The invention solves the problems that polyaniline is easy to agglomerate and graphene sheets are easy to densely stack during the composite process of polyaniline and graphene, and greatly improves the electrochemical performance of electrode materials, and the method has the advantages of simple operation, low cost, The beneficial effect of easy scale-up preparation.

Description

technical field [0001] The invention relates to a preparation method of a composite electrode material, in particular to a preparation method of a graphene and polyaniline composite fiber electrode material. Background technique [0002] With the decrease of fossil fuels, people urgently need to find new energy sources that can replace fossil fuels. In the process of utilizing new energy, the storage and conversion of energy is very important, and energy storage devices such as supercapacitors and batteries have been extensively studied by scientists. For energy storage devices, the storage of ions by electrode materials and the electrical conductivity have a great influence on the performance of energy storage devices. Graphene has become one of the most potential energy storage materials due to its huge specific surface area and high electrical conductivity. One, however, the theoretical specific capacitance of graphene is relatively low (550F g -1 ), and the strong π-π ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/26H01G11/36H01G11/40H01G11/48H01G11/86
CPCH01G11/26H01G11/36H01G11/40H01G11/48H01G11/86Y02E60/13
Inventor 邵姣婧刘美丽龙翔
Owner GUIZHOU UNIV
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