One-step in-situ preparation method of graphene/polyaniline composite electrode

A composite electrode and in-situ preparation technology, which is applied to battery electrodes, circuits, electrical components, etc., can solve the problems of poor uniformity and repeatability, low mechanical strength, and long preparation time, achieving controllable size, short time consumption, Simple operation effect

Inactive Publication Date: 2016-10-26
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current technology generally has disadvantages such as relatively complicated operation, long preparation time, low mechanical strength, poor uniformity and repeatability, etc.

Method used

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  • One-step in-situ preparation method of graphene/polyaniline composite electrode
  • One-step in-situ preparation method of graphene/polyaniline composite electrode
  • One-step in-situ preparation method of graphene/polyaniline composite electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The traditional graphite paper electrode was used as the carrier electrode, and the protonic acid / aniline electrolyte (H 2 SO 4 0.1M, aniline 0.05M) as the working medium, using a working electrode (traditional graphite paper electrode)-counter electrode (platinum wire electrode) double-electrode system, under the action of 10V DC voltage, process for 2min, wash in deionized water, and dry , that is, a graphene / polyaniline composite electrode is prepared in one step.

[0025] Such as figure 1 As shown, it can be seen from the SEM image that the graphene wrinkled structure is covered with fine particles of polyaniline; it can be seen from the RAMAN image that the composite material is at 1000-1750cm -1 It does have the D-G characteristic peaks of graphene and the broad characteristic peaks of polyaniline in the range; it can be seen from the FTIR diagram that the composite material not only has the characteristic absorption peaks of graphene functional groups such as ...

Embodiment 2

[0027] Basically the same as Example 1, but with the following changes: protonic acid / aniline electrolyte selection: electrolyte A (0.1MH 2 SO 4 / 0.05M aniline solution), electrolyte B (1M H 2 SO 4 / 0.05M aniline solution), electrolyte C (0.1M HClO 4 / 0.05M aniline solution), electrolyte D (1M HClO 4 / 0.05M aniline solution), electrolyte E (0.1M HCl / 0.05M aniline solution) and electrolyte F (1M HCl / 0.05M aniline solution), the obtained composite electrode is as follows figure 2 shown.

Embodiment 3

[0029] It is basically the same as Example 1, but with the following changes: the applied voltage provided by the DC stabilized power supply is 2V, 4V, 6V, 8V, 10V, 12V, 14V, 16V, 20V, and the resulting composite electrode is as follows: image 3 shown.

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Abstract

The invention provides a one-step in-situ preparation method of a graphene/polyaniline composite electrode. The in-situ synthesis of graphene and polyaniline in the composite electrode is simultaneously performed. The method comprises the following steps that the composite electrode is processed and prepared under the effect of direct current voltage by using a traditional graphite paper electrode as a carrier electrode and protonic acid/aniline electrolyte as a working medium and using a work electrode-counter electrode double electrode system; and the composite electrode is cleaned in deionized water and is naturally dried in the air. Compared with exogenous graphene modification means such as deposition, doping and smearing, and in-situ graphene stripping and synchronous polyaniline synthesis methods, the one-step in-situ preparation method has the advantages that the operation is simple; the processing is fast; and the bioelectrochemistry compatibility is high, and the like. Compared with a traditional electrode, the composite electrode is more suitable for a bioelectrochemistry system.

Description

technical field [0001] The invention relates to a method for preparing a graphene / polyaniline composite electrode in one step in situ, belonging to the technical field of electrode materials. Background technique [0002] In the field of electrode material research, electrode modification to reduce the activation overpotential and increase the active specific surface area plays a vital role. Compared with traditional carbon-based electrode materials, electrode-modified electrodes overcome the disadvantages of poor biocompatibility, weak conductivity, low output power, and difficult shape control, and provide new ideas for the preparation of electrode materials. [0003] The composite of graphene and polyaniline not only overcomes the defects of graphene's low conductivity and unstable structure of polyaniline, but also integrates the performance advantages of the two materials. At present, the preparation methods of graphene-polyaniline composite materials include dispersio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/96H01M4/88H01M8/16
CPCH01M4/88H01M4/96H01M8/16Y02E60/50
Inventor 雍阳春孙得珍翟丹丹
Owner JIANGSU UNIV
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