Preparation method of nitrogen and sulfur co-doped graphene oxide grafted polyaniline/MoS2 electrode

A technology of nitrogen-sulfur co-doping and graphene, which is applied in the field of composite materials and electrochemical materials, can solve the problems of performance degradation and agglomeration, and achieve the effects of enhanced electronegativity, light weight and low cost

Active Publication Date: 2021-11-12
武夷学院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the above method, graphene and polyaniline are just ordinary composites, and the van der Waals force between the two will cause graphene to agglomerate during the preparation process, resulting in performance degradation

Method used

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  • Preparation method of nitrogen and sulfur co-doped graphene oxide grafted polyaniline/MoS2 electrode

Examples

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Embodiment 1

[0039] This example provides a nitrogen-sulfur co-doped graphene oxide grafted polyaniline / MoS 2 The preparation method of electrode specifically comprises the following steps:

[0040] 1) Preparation of nitrogen and sulfur co-doped graphene oxide

[0041] Add 1.3 g of graphene oxide, 5 g of sodium dodecylbenzenesulfonate and 300 mL of deionized water into a three-necked flask, and stir magnetically at room temperature to form a dispersion. Add 0.2g pyrrole, 0.1g thiophene and 1.8g FeCl to the dispersion 3 , continue to stir and react for 12 hours, and the product is filtered, washed and dried to obtain a graphene oxide / polypyrrole / polythiophene composite. Soak the complex in 100 mL of ammonium chloride solution with a mass concentration of 1.2% for 12 hours, wash and dry. The compound was put into a tube furnace, and under the protection of argon, the temperature was raised from 25°C to 270°C and kept for 2h, then the temperature was raised from 270°C to 780°C and kept for...

Embodiment 2

[0051] This example provides a nitrogen-sulfur co-doped graphene oxide grafted polyaniline / MoS 2 The preparation method of electrode specifically comprises the following steps:

[0052] 1) Preparation of nitrogen and sulfur co-doped graphene oxide

[0053] Add 1.4 g of graphene oxide, 5 g of sodium dodecylbenzenesulfonate and 300 mL of deionized water into a three-necked flask, and stir magnetically at room temperature to form a dispersion. Add 0.3g pyrrole, 0.1g thiophene and 1.8g FeCl to the dispersion 3 , continue to stir and react for 12 hours, and the product is filtered, washed and dried to obtain a graphene oxide / polypyrrole / polythiophene composite. Soak the complex in 100 mL of 1% ammonium chloride solution for 12 hours, wash and dry. The compound was put into a tube furnace, and under the protection of argon, the temperature was raised from 25°C to 290°C and kept for 2h, then the temperature was raised from 290°C to 780°C and kept for 2h to obtain nitrogen-sulfur c...

Embodiment 3

[0063] This example provides a nitrogen-sulfur co-doped graphene oxide grafted polyaniline / MoS 2 The preparation method of electrode specifically comprises the following steps:

[0064] 1) Preparation of nitrogen and sulfur co-doped graphene oxide

[0065] Add 1.2 g of graphene oxide, 5 g of sodium dodecylbenzenesulfonate and 300 mL of deionized water into a three-necked flask, and stir magnetically at room temperature to form a dispersion. Add 0.4g pyrrole, 0.1g thiophene and 1.8g FeCl to the dispersion 3 , continue to stir and react for 12 hours, and the product is filtered, washed and dried to obtain a graphene oxide / polypyrrole / polythiophene composite. Soak the complex in 100 mL of ammonium chloride solution with a mass concentration of 1.1% for 12 hours, wash and dry. The compound was put into a tube furnace, and under the protection of argon, the temperature was raised from 25°C to 300°C and kept for 2h, and then the temperature was raised from 300°C to 780°C and kept...

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Abstract

The invention provides a preparation method of a nitrogen and sulfur co-doped graphene oxide grafted polyaniline/MoS2 electrode material. According to the method, graphene oxide is used as a carrier, pyrrole is used as a nitrogen source, thiophene is used as a sulfur source, and nitrogen and sulfur co-doped graphene oxide is obtained through a series of polymerization, activation, pre-oxidation and carbonization; the nitrogen and sulfur co-doped graphene oxide is subjected to acid activation, thionyl chloride modification, p-phenylenediamine modification and aniline polymerization to obtain nitrogen and sulfur co-doped graphene oxide grafted polyaniline; and MoS2 is loaded onto the nitrogen and sulfur co-doped graphene oxide grafted polyaniline through a hot water reaction to obtain the nitrogen and sulfur co-doped graphene oxide grafted polyaniline/MoS2. According to the nitrogen and sulfur co-doped graphene oxide grafted polyaniline/MoS2 electrode, the specific capacitance is larger than 400 F/g under the condition that the current density is 1A/g, and the capacitance is 80% or above of the initial value after the nitrogen and sulfur co-doped graphene oxide grafted polyaniline/MoS2 electrode is recycled 800 times.

Description

technical field [0001] The invention relates to a nitrogen-sulfur co-doped graphene oxide grafted polyaniline / MoS 2 The invention relates to a method for preparing an electrode, which belongs to the fields of composite materials and electrochemical materials. Background technique [0002] As a new type of energy storage material between capacitors and secondary batteries, supercapacitors have attracted widespread attention due to their advantages such as fast charge and discharge rates, high energy and power densities, and long cycle life. The performance of supercapacitors mainly depends on the selection of electrode materials. The currently used electrode materials are mainly carbon materials, metal oxides and conductive polymers. Carbon materials have good conductivity and long cycle life, but their specific capacitance is relatively small; metal oxide materials have relatively high specific capacitance, but poor conductivity and high cost; and conductive polymer materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/34H01G11/86H01G11/36H01G11/48H01G11/30
CPCH01G11/34H01G11/86H01G11/36H01G11/48H01G11/30Y02E60/13
Inventor 赵瑨云胡家朋林皓梁松张玉斌林志毅
Owner 武夷学院
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