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Polyaniline/carbon nano tube hybrid super capacitor

A carbon nanotube, supercapacitor technology, applied in hybrid capacitor electrodes, capacitors, electrolytic capacitors, etc., to achieve the effect of long cycle life, excellent performance and high specific energy

Inactive Publication Date: 2004-09-15
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, there is no hybrid supercapacitor assembled with polyaniline as the positive electrode active material and carbon nanotubes as the negative electrode material.

Method used

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  • Polyaniline/carbon nano tube hybrid super capacitor
  • Polyaniline/carbon nano tube hybrid super capacitor
  • Polyaniline/carbon nano tube hybrid super capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Mix the composite material of polyaniline and carbon nanotubes (containing 10% carbon nanotubes) and acetylene black evenly, add the acetone solution of PVDF-HFP dropwise, and apply it on the nickel foam, press it, and dry it in vacuum to obtain polyaniline electrode. Wherein: polyaniline and carbon nanotube composite material / acetylene black / PVDF-HFP=0.85 / 0.1 / 0.05 (mass ratio).

[0024] Mix carbon nanotubes and acetylene black evenly, add PVDF-HFP (vinylidene fluoride-hexafluoropropylene copolymer) acetone solution dropwise, and apply it on nickel foam, press and dry in vacuum to obtain carbon nanotube electrodes. Wherein: carbon nanotube / acetylene black / PVDF-HFP=0.85 / 0.1 / 0.05 (mass ratio).

[0025] The above-mentioned polyaniline electrode and carbon nanotube electrode were used as positive and negative electrodes respectively, nickel foam was used as positive and negative electrode current collectors, and 1mol / L LiPF 6 The EC / DEC (ethylene carbonate / butylene carbon...

Embodiment 2

[0027] Mix polyaniline and acetylene black evenly, add PVDF-HFP acetone solution dropwise, and apply it on nickel foam, press it, and dry it in vacuum to obtain polyaniline electrode. Wherein: polyaniline / acetylene black / PVDF-HFP=0.85 / 0.1 / 0.05 (mass ratio), wherein polyaniline is 8.5mg.

[0028] Mix carbon nanotubes and acetylene black evenly, add PVDF-HFP acetone solution dropwise, and spread on nickel foam, press and dry in vacuum to obtain carbon nanotube electrodes. Wherein: carbon nanotube / acetylene black / PVDF-HFP=0.85 / 0.1 / 0.05 (mass ratio), wherein 17mg of carbon nanotube.

[0029] The above-mentioned polyaniline electrode and carbon nanotube electrode were used as positive and negative electrodes respectively, nickel foam was used as positive and negative electrode current collectors, and 1mol / L LiPF 6 EC / DEC (ethylene carbonate / butylene carbonate=1 volume ratio) solution is used as electrolyte, and Celgard2300 microporous membrane is used as diaphragm. In an atmospher...

Embodiment 3

[0031] Mix polyaniline and acetylene black evenly, add PVDF-HFP acetone solution dropwise, and apply it on nickel foam, press it, and dry it in vacuum to obtain polyaniline electrode. Wherein: polyaniline / acetylene black / PVDF-HFP=0.85 / 0.1 / 0.05 (mass ratio), wherein polyaniline is 8.5 mg.

[0032] Mix carbon nanotubes, activated carbon and acetylene black evenly, add PVDF-HFP acetone solution dropwise, and apply it on nickel foam, press it, and dry it in vacuum to obtain a carbon nanotube electrode. Wherein: carbon nanotube / activated carbon / acetylene black / PVDF-HFP=0.75 / 0.1 / 0.1 / 0.05 (mass ratio), wherein carbon nanotube and activated carbon are 25.5mg.

[0033] The above-mentioned polyaniline electrode and carbon nanotube electrode were used as positive and negative electrodes respectively, nickel foam was used as positive and negative electrode current collectors, and 1mol / L LiPF 6 EC / DEC (ethylene carbonate / butylene carbonate=1 volume ratio) solution is used as electrolyte, ...

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Abstract

The invention relates to structural design of hybrid type super capacitor. In the invention, conducting polyaniline and Nano carbon tube are as active materials of positive and negative poles of super capacitor respectively. The structure of the super capacitor is positive pole current collector / polyaniline pole / electrolyte and membrane Nano carbon tube pole / negartive current collector. Polyaniline / nano carbon tube hybrid type super capacitor can gave play to potential of pole material fully, forming function of coordination and complementation, and possessing higher specific energy and specific power. Comparing with super capacitor made from Nano carbon tube, specific energy of hybrid type super capacitor is raised 135 %, and average specific power is raised 7%. Comparing with super capacitor made from polyaniline specific energy of hybrid type super capacitor is raised30%, and average specific power is raised 100%.

Description

technical field [0001] The invention relates to an energy storage element, in particular to the structural design of a polyaniline / carbon nanotube hybrid supercapacitor. Background technique [0002] In the past two decades, with the rapid emergence and development of new technologies in the fields of information technology, electronic products, and vehicle energy, people have paid more attention to the research and development of novel supercapacitors. Supercapacitors, also known as electrochemical capacitors, are a new type of energy storage element between ordinary capacitors and secondary batteries. Compared with traditional batteries, supercapacitors have the advantages of high specific power, many charge-discharge cycles, and short charge-discharge time; compared with traditional electrolytic capacitors, they have the advantages of large specific capacity and high specific energy. Ultracapacitors have many potential applications. High-power ultracapacitors can be used...

Claims

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Application Information

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IPC IPC(8): H01G9/00H01G11/38H01G11/48H01M10/00H01M14/00
CPCY02E60/12Y02E60/13H01G11/36H01G11/48
Inventor 周啸杨红生姜翠玲于家宁
Owner TSINGHUA UNIV
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