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Preparation method of co-doped conductive polymer electrode material

A conductive polymer and electrode material technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems affecting battery performance, battery voltage drop, and increased battery internal resistance, and achieve simple equipment, improved electrical conductivity, and excellent electrical conductivity performance effect

Inactive Publication Date: 2015-02-04
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the conductive polymer is easy to transform into its own reduced state during high-current discharge, and the reduced conductive polymer is insulating, which greatly increases the internal resistance of the battery, resulting in a rapid drop in battery voltage and affecting battery performance.

Method used

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  • Preparation method of co-doped conductive polymer electrode material
  • Preparation method of co-doped conductive polymer electrode material
  • Preparation method of co-doped conductive polymer electrode material

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Prepare 0.1 M 3,4-ethylenedioxythiophene monomer, 0.0005 M anthraquinone sulfate, 1.0 mg / ml graphene oxide aqueous solution, pass N 2 After 30 min, constant current electrodeposition was carried out using a three-electrode system with an applied current of 0.5 mA cm -2 , the electric quantity of electrodeposition is 1.2 coulombs; the obtained poly-3,4-ethylenedioxythiophene / anthraquinone / graphene oxide composite material is washed and placed in a three-electrode system for electrochemical reduction, and the applied voltage is 1.1 V, the electrolyte is sodium chloride solution, and after the reaction, the electrode material of poly-3,4-ethylenedioxythiophene / anthraquinone / graphene composite can be obtained by repeated washing with water.

Embodiment 2

[0023] Prepare an aqueous solution containing 0.1 M pyrrole monomer, 0.0005 M anthraquinone sulfate, and 1.0 mg / ml carbon nanotubes, and pass N 2 After 30 min, galvanostatic electrodeposition was performed using a three-electrode system with an applied current of 2 mA cm -2 , The electric quantity of electrodeposition is 2.0 coulombs, and the polypyrrole / anthraquinone / carbon nanotube composite electrode material can be obtained by repeated washing with water after the reaction.

Embodiment 3

[0025] Prepare an aqueous solution containing 0.05 M aniline monomer, 0.1 M anthraquinone sulfate, and 1 mg / ml activated carbon, and pass through N 2 After 30 min, constant current electrodeposition was carried out using a three-electrode system with an applied current of 1 mA cm -2 , The electric quantity of electrodeposition is 1.6 coulombs, and the polyaniline / anthraquinone / nano-carbon composite electrode material can be obtained by repeated washing with water after the reaction.

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Abstract

The invention relates to a preparation method of a co-doped conductive polymer electrode material. The preparation method comprises the following steps of carrying out an electrochemical deposition method on a solution in which a 0.05-0.5M conductive polymer monomer, a 0.0005-0.01M water-soluble quinonoid and 0.05-5.0mg / ml nano carbon are dissolved so as to obtain a conductive polymer / quinonoid / nanocarbon composite material, and applying current of 0.1-2mAcm<-2>, wherein the electricity quantity of electrodeposition is 0.5-4 Coulomb, thereby obtaining the conductive polymer / quinonoid / nanocarbon composite material. The method can be carried out at normal temperature; equipment is simple, is easy to operate, and the used co-doped system is wide in selection range; the prepared porous conductive polymer composite material having a micro-nano structure is an electrode material with an excellent conductive performance and an electrochemical performance, and can act as an electrode of a metal-air battery.

Description

technical field [0001] The invention belongs to the field of new energy, and relates to the preparation of rechargeable metal-air battery electrodes, in particular to a preparation method of a co-doped conductive polymer electrode material. Background technique [0002] Metal-air batteries have the characteristics of high specific energy and large capacity. When the load is output, the working voltage is stable, the battery energy density is high, the raw materials are abundant, and the price is low. It has irreplaceable advantages of other chemical energy batteries. It is not only widely used in traditional fields such as portable communication equipment, medical equipment, and calculators, but also gradually has a tendency to be applied in mobile phones and notebook computers. [0003] A metal-air battery is composed of an air electrode, a metal negative electrode, an electrolyte, and a separator. Only by improving the electrochemical performance of the air electrode can ...

Claims

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Application Information

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IPC IPC(8): H01M4/88
CPCH01M4/88H01M4/90Y02E60/50
Inventor 何丹农杨扬张春明贺旷驰黄昭王丹吴晓燕严鹏
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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