Preparation method of graphene/carbon nano tube co-reinforced conducting polymer hydrogel

A conductive polymer, carbon nanotube technology, applied in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrodes, etc., can solve the problems of difficult to obtain high specific capacitance, small effective specific surface area of ​​composite materials, etc., to facilitate the expansion of scale. Production, improvement of ion/electron transport ability and chemical stability, effect of improving electrochemical performance

Inactive Publication Date: 2016-01-13
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the π-π stacking effect of graphene and conductive polymers, the effective specific surface area of ​​the composite material is small, and it is still difficult to obtain high specific capacitance.

Method used

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  • Preparation method of graphene/carbon nano tube co-reinforced conducting polymer hydrogel
  • Preparation method of graphene/carbon nano tube co-reinforced conducting polymer hydrogel
  • Preparation method of graphene/carbon nano tube co-reinforced conducting polymer hydrogel

Examples

Experimental program
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Embodiment 1

[0032] A preparation method of graphene / carbon nanotubes co-reinforced conductive polymer hydrogel, the steps are as follows:

[0033] (1) At room temperature, dissolve 0.412g (0.1M) sodium polystyrene sulfonate (purchased from Aldrich, Germany) in 20mL0.05mg / mL graphene oxide solution (see HummersWS, OffemanRE.Preparationofgraphiteoxide.JAmChemSoc, 1958 for the preparation method ,80:1339), stirred and dispersed using ultrasound to form a solution.

[0034] (2) Add 10 mg of carboxylated carbon nanotubes (purchased from Shenzhen Nanoport Co., Ltd.) into the above aqueous solution, stir and disperse by ultrasonic waves to form a dispersion liquid.

[0035] (3) Add 110 μL (1 mmol) of 3,4-ethylenedioxythiophene monomer (purchased from Suzhou Yake Chemical Reagent Co., Ltd.) into the above dispersion liquid, stir and disperse with ultrasonic waves to form a reaction system;

[0036] (4) 12.12gFe(NO 3 )3 9H 2 O (30mmol, purchased from Sinopharm Chemical Reagent Co., Ltd.) was di...

Embodiment 2

[0049] A kind of preparation method of Graphene / carbon nanotube reinforced conductive polymer hydrogel, its difference with embodiment 1 is that the quality of polystyrene sodium sulfonate becomes 0.824g (0.2M) by 0.412g (0.1M) M), the concentration of graphene oxide was changed from 0.05 mg / mL to 0.1 mg / mL, and 10 mg carboxylated carbon nanotubes were changed to 10 mg acidified carbon nanotubes (the carbon nanotubes were refluxed in concentrated nitric acid at 80 ° C for 12 h) 110 μL (1 mmol )3,4-ethylenedioxythiophene monomer was changed to 210 μL (3 mmol) pyrrole, and the standing reaction changed from 8h to 12h.

Embodiment 3

[0051] A kind of preparation method of Graphene / carbon nanotube reinforced conductive polymer hydrogel, its difference with embodiment 1 is that the quality of sodium polystyrene sulfonate becomes 1.236g (0.3g) by 0.412g (0.1M) M), the concentration of graphene oxide becomes 0.5mg / mL by 0.05mg / mL, and 10mg carboxylated carbon nanotubes become 10mg epoxidized carbon nanotubes (preparation method is referring to Ogrin, D., Chattopadhyay, J, Sadana, A.K, Billups, W.E, Barron, A.R. Epoxidation and deoxygenation of single-walled carbon nanotubes: Quantification of epoxy defects. JAmChemSoc, 2006, 128, 11322-11323.) 110 μ L (1 mmol) 3,4-ethylenedioxythiophene monomer into 540 μ L (5 mmol) aniline, static The reaction was changed from 8h to 18h, the purification equilibrium time was changed from 3 days to 5 days, and the soaking time of the hydrogel in hydroiodic acid was changed from 12h to 18h.

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Abstract

The invention relates to a preparation method of graphene / carbon nano tube co-reinforced conducting polymer hydrogel. The method comprises the following steps that: (1) carbon nano tubes are added into a polystyrene sulfonate and graphene oxide aqueous solution, and the mixture of the carbon nano tubes and the polystyrene sulfonate and graphene oxide aqueous solution are stirred; (2) a conducting polymer monomer is added into the solution obtained in the step (1), and the mixture of the conducting polymer monomer and the solution is stirred, and the concentration of the conducting polymer monomer ranges from 0.05 to 0.5mol / L; (3) an oxidant solution is added into the reaction system obtained in step (2), and the mixture of the oxidant solution and the reaction system is stirred, and ratio of the conducting polymer to the oxidant ranges from 1:3 to 1:30; (4) the mixture of the oxidant solution and the reaction system stands and reacts, and a product obtained in the step (3) is purified and balanced in distilled water, so that the graphene / carbon nano tube co-reinforced conducting polymer hydrogel can be obtained; and (5) the hydrogel obtained in the step (4) is soaked in hydriodic acid, so that the graphene / carbon nano tube co-reinforced conducting polymer hydrogel can be obtained. Compared with a pure conducting polymer hydrogel, the graphene / carbon nano tube co-reinforced conducting polymer hydrogel has high conductivity and super capacitance performance.

Description

technical field [0001] The invention belongs to the technical field of supercapacitor electrode materials, and in particular relates to a preparation method of a graphene / carbon nanotube co-reinforced conductive polymer hydrogel. Background technique [0002] With the depletion of fossil energy and the aggravation of environmental pollution, people urgently need an efficient, clean and sustainable energy source. In recent years, supercapacitors have attracted much attention due to their high power density, long cycle life, and the advantages of both traditional electric double layer capacitors (high output power) and fuel cells (high energy storage). Supercapacitors have been recognized as an ideal auxiliary or main power source for electric vehicles because of their advantages such as high specific power, long cycle life, short charging time and wide temperature range. A supercapacitor is mainly composed of four parts: a current collector, an electrode, an electrolyte, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/30H01G11/48
Inventor 韩永芹钱秋豪梁天泽展晓元李廷希王同臣王天琪
Owner SHANDONG UNIV OF SCI & TECH
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