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Preparation method of polyaniline/cobalt-nickel dual hydroxide supercapacitor composite electrode material

A double hydroxide, supercapacitor technology, applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, electrolytic organic material coating, etc., can solve problems such as poor conductivity and narrow chemical window, and achieve high specific capacitance and cost. The effect of low cost and wide source of raw materials

Inactive Publication Date: 2018-07-13
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although cobalt-nickel double hydroxide has advantages in terms of capacity as a supercapacitor electrode, but the general electrochemical window is relatively narrow and the conductivity is poor.

Method used

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  • Preparation method of polyaniline/cobalt-nickel dual hydroxide supercapacitor composite electrode material
  • Preparation method of polyaniline/cobalt-nickel dual hydroxide supercapacitor composite electrode material
  • Preparation method of polyaniline/cobalt-nickel dual hydroxide supercapacitor composite electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Prepare aniline monomer, nickel nitrate and cobalt nitrate aqueous solution, the concentration of nickel ion is 0.2M, the concentration of cobalt ion is 0.4M, the concentration of aniline monomer is 0.02M, and the concentration ratio of aniline monomer and nickel ion is 0.1. Stir at room temperature for 2 h until the aniline monomer is completely dissolved to obtain an electrolyte.

[0018] (2) Take 50ml of electrolyte solution and put it into the electrolytic cell, with 1×4cm 2 Compacted carbon paper was used as the working and counter electrodes. The saturated calomel electrode was used as the reference electrode, and a three-electrode system was configured, and the system was scanned by cyclic voltammetry for 150 cycles between -1V and 1V at a scan rate of 100mV / s.

[0019] (3) After the reaction, the working electrode and the counter electrode were removed, soaked in deionized water overnight to remove impurity ions, and dried at 60°C for 24 hours to prepare th...

Embodiment 2

[0021] The steps of Example 1 were repeated, only the concentration of aniline monomer was adjusted to 0.04M, and the concentration ratio of aniline monomer and nickel ion was 0.2.

Embodiment 3

[0023] Repeat the steps of Example 1, only adjust the concentration of aniline monomer to 0.05M, and the concentration ratio of aniline monomer to nickel ion is 0.25.

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Abstract

The invention discloses a preparation method of a polyaniline / cobalt-nickel dual hydroxide supercapacitor composite electrode material. An aniline monomer is added into a mixed water solution with nickel ion concentration of 0.2M and cobalt ion concentration of 0.4M, and stirred at the room temperature for 2h until the aniline monomer is fully dissolved to obtain an electrolyte; 50ml of the electrolyte is placed in an electrolytic cell, and compaction carbon paper or graphene paper is used as a working electrode and a counter electrode, and a saturated calomel electrode is used as a referenceelectrode to assemble a three-electrode system; cyclic voltammetry scanning at the scanning rate of 5-2,000mV / s and the voltage window of minus 1V to 1V is performed for 100-10,000 cycles; after the reaction is completed, the working electrode and the counter electrode are taken off and immersed by deionized water over night to remove impurity ions; and finally, the product is dried at a temperature of 60 DEG C for 24h to obtain the polyaniline / cobalt-nickel dual hydroxide supercapacitor composite electrode material. The method has a simple, environment friendly and reliable preparation process, wide raw material resource and low cost, and is suitable for industrial production; and the prepared electrode material has high conductivity and high electrical capacity.

Description

technical field [0001] The invention relates to a method for preparing polyaniline / cobalt-nickel double hydroxide supercapacitor composite electrode material by electrochemical deposition, in particular, relates to a polyaniline / cobalt nickel double hydroxide supercapacitor composite electrode material Preparation. Background technique [0002] As a common conductive polymer, polyaniline is often used in supercapacitors, batteries, sensors and anti-corrosion fields due to its simple preparation, low cost, good environmental stability and unique physical and chemical properties. The great attention of scientific researchers all over the world. In particular, conductive polyaniline with nanostructures, due to its extremely small particle size, large specific surface area, and extremely fast electron transfer rate, endows nano-conductive polyaniline materials with many unique properties that traditional bulks do not have. [0003] As an electrode material for supercapacitors,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/48H01G11/86C25D9/02C25D9/04
Inventor 樊新陈韦良李业宝禤丽镅董小燕庞树花
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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