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PPy/GO composite electrode material and preparation method and application thereof

A composite electrode and mixed solution technology, applied in separation methods, chemical instruments and methods, water/sewage treatment, etc., can solve problems such as complex preparation process, difficult electrode forming, poor repeatability, etc., to achieve operability and repeatability Strong, simple effect

Inactive Publication Date: 2019-11-12
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of electrode preparation, compression molding and bond molding are the main methods to prepare electrode materials at present. This method has defects such as complicated preparation process, difficult electrode molding, and poor repeatability.

Method used

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  • PPy/GO composite electrode material and preparation method and application thereof
  • PPy/GO composite electrode material and preparation method and application thereof
  • PPy/GO composite electrode material and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] The pure PPy electrode preparation method of the present embodiment is carried out according to the following steps:

[0036] Step 1: Add 2.8 mL of pyrrole monomer to 200 mL of 0.1 M sodium dodecylbenzene sulfonate solution, stir for 20 minutes to obtain a uniform mixed solution; g dodecylbenzenesulfonic acid, then stir the sodium dodecylbenzenesulfonate solution formed evenly;

[0037] Step 2: Put the nickel foam substrate into the mixed solution formed in step 1 as the anode, and the graphite plate as the cathode, and connect the power supply for electrochemical deposition. The deposition temperature is 25°C, the deposition voltage is 3.0V, and the deposition time is 25 minutes to obtain a pure PPy electrode. .

Embodiment 2

[0039] The preparation method of the PPy / GO composite electrode of the present embodiment is carried out according to the following steps:

[0040] Step 1: Add 1.4 mL of pyrrole monomer to 100 mL of sodium dodecylbenzenesulfonate solution and stir for 20 minutes to obtain a uniform mixed solution; Dialkylbenzenesulfonic acid, then stir the sodium dodecylbenzenesulfonate solution that forms evenly;

[0041]Step 2: Add 100 mL of graphene oxide dispersion with a concentration of 1 g / L to the mixed solution formed in step 1, ultrasonicate the mixed solution for 10 minutes, and magnetically stir for 20 minutes to obtain a uniform mixed solution; Prepared by the Hummers method, add 3g NaNO in a 500mL round bottom flask 3 , 3 g of graphite and 100 mL of concentrated H 2 SO 4 , and kept stirring for 30 min in an ice-water bath. 9g KMnO 4 Slowly add it into the flask under vigorous stirring, then remove the ice bath, keep stirring the mixed solution at 35°C for 1 hour, then add 10...

Embodiment 3

[0044] The preparation method of the PPy / GO composite electrode of the present embodiment is carried out according to the following steps:

[0045] Step 1: Add 1.4 mL of pyrrole monomer to 100 mL of sodium dodecylbenzenesulfonate solution and stir for 20 minutes to obtain a uniform mixed solution; Dialkylbenzenesulfonic acid, then stir the sodium dodecylbenzenesulfonate solution that forms evenly;

[0046] Step 2: Add 100 mL of graphene oxide dispersion with a concentration of 1 g / L to the mixed solution formed in step 1, ultrasonicate the mixed solution for 10 minutes, and magnetically stir for 20 minutes to obtain a uniform mixed solution; Prepared by the Hummers method, add 3g NaNO in a 500mL round bottom flask 3 , 3 g of graphite and 100 mL of concentrated H 2 SO 4 , and kept stirring for 30 min in an ice-water bath. 9g KMnO 4 Slowly add it into the flask under vigorous stirring, then remove the ice bath, keep stirring the mixed solution at 35°C for 1 hour, then add 1...

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Abstract

The invention discloses a PPy / GO composite electrode and a preparation method and application thereof, and belongs to the technical field of capacitive deionization. According to the preparation method of the PPy / GO composite electrode, a foamed nickel substrate is used as a current collector, firstly a pyrrole monomer is dissolvoed in a sodium dodecylbenzenesulfonate (SDBS) solution, then a graphene oxide dispersion solution is added, a mixture is ultrasonically dispersed and fully stirred, a PPy / GO composite coating is formed on the foamed nickel current collector by a one-step anodic electrochemical co-deposition method, and the mixture is washed and dried to prepare the PPy / GO composite electrode. The method for preparing the electrode material is simple, operable and reproducible, andis suitable for mass production. The synergistic action of GO and PPy enables the conductivity of the electrode material to be significantly improved while more adsorption sites are given for the electrode material, and the capacitive properties and absorption and desorption properties of the electrode material are further improved.

Description

technical field [0001] The invention belongs to the technical field of capacitive deionization, and in particular relates to a PPy / GO composite electrode material, a preparation method and an application thereof. Background technique [0002] In recent years, capacitive deionization technology has attracted the attention of researchers as an advanced technology to deal with energy crisis and environmental pollution. Regarding electrode materials, conductive polymers have become a research hotspot as electrode materials for capacitive deionization technology. Conductive polymers not only have good electrical conductivity, but also exhibit excellent ion exchange properties. As a typical conductive polymer, polypyrrole (PPy) has the advantages of high specific capacitance, high conductivity, low cost, and good chemical stability, but it has good cycle stability during charge and discharge. In terms of electrode preparation, compression molding and bond molding are the main me...

Claims

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Application Information

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IPC IPC(8): C02F1/469
CPCC02F1/4691
Inventor 薛娟琴孙祺鑫毛维博张玉洁毕强唐长斌
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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