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Carbon-based supercapacitor electrode material and preparation method thereof

A technology of supercapacitor electrodes and carbon materials, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve the problems of difficult preparation, limitation, and high price, and achieve high specific capacitance per unit mass, high specific capacity, Good effect of fast charging and discharging ability

Inactive Publication Date: 2018-06-01
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of the current supercapacitor electrode materials are usually difficult to prepare, expensive, or limited by capacitance

Method used

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  • Carbon-based supercapacitor electrode material and preparation method thereof
  • Carbon-based supercapacitor electrode material and preparation method thereof
  • Carbon-based supercapacitor electrode material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Embodiment 1: The supramolecular dopant content is zero.

[0046] Take 0.12mmol of pyrrole and add 1ml of isopropanol, and record it as solution A; take 1.2mmol of ammonium persulfate and add deionized water to obtain solution B; refrigerate solution A and solution B to 4 degrees Celsius, mix, and stand for 30 minutes; immerse the reaction product in Ethanol solution for 12 hours, filtered to remove excess pyrrole, then immersed in deionized water for 24 hours, filtered to remove excess supramolecular dopant; after drying, black solid powder of doped polypyrrole was obtained. In a nitrogen atmosphere, carbonization under normal pressure, the nitrogen flow rate is 70 sccm, the heating rate is from 5 degrees Celsius to 800 degrees Celsius, and the temperature is naturally lowered after maintaining for 2 hours. The carbonized material was immersed in 7M KOH solution for 24 hours, filtered and dried; in a nitrogen atmosphere, under normal pressure, the nitrogen flow rate wa...

Embodiment 2

[0047] Example 2: Copper phthalocyanine is used as a supramolecular dopant and pressed into a film.

[0048] Take 0.12mmol of pyrrole and add 1ml of isopropanol, and record it as solution A; take 0.030mmol of copper phthalocyanine and add 2ml of deionized water to obtain a doping solution, then take 1.2mmol of ammonium persulfate and add it to the doping solution to obtain solution B; refrigerate solution A and solution B to 4 degrees Celsius, mix, and stand for 30 minutes; immerse the reaction product in ethanol solution for 12 hours, filter to remove excess pyrrole, and then immerse in deionized water for 24 hours, filter to remove excess supramolecular dopant; dry to obtain doped Polypyrrole black solid powder. In a nitrogen atmosphere, carbonization under normal pressure, the nitrogen flow rate is 70 sccm, the heating rate is from 5 degrees Celsius to 800 degrees Celsius, and the temperature is naturally lowered after maintaining for 2 hours. The carbonized material was i...

Embodiment 3

[0049] Embodiment 3: Copper phthalocyanine is used as a supramolecular dopant, which is drop-coated on carbon cloth.

[0050] Take 0.12mmol of pyrrole and add 1ml of isopropanol, and record it as solution A; take 0.030mmol of copper phthalocyanine and add 2ml of deionized water to obtain a doping solution, then take 1.2mmol of ammonium persulfate and add it to the doping solution to obtain solution B; refrigerate solution A and solution B to 4 degrees Celsius, mix, and stand for 30 minutes; immerse the reaction product in ethanol solution for 12 hours, filter to remove excess pyrrole, and then immerse in deionized water for 24 hours, filter to remove excess supramolecular dopant; dry to obtain doped Polypyrrole black solid powder. In a nitrogen atmosphere, carbonization under normal pressure, the nitrogen flow rate is 70 sccm, the heating rate is from 5 degrees Celsius to 800 degrees Celsius, and the temperature is naturally lowered after maintaining for 2 hours. The carboniz...

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Abstract

The invention discloses a preparation method of a carbon-based supercapacitor electrode material. The preparation method comprises the steps of: regulating and controlling a microstructure of a polypyrrole hydrogel precursor by utilizing a supramolecular dopant, and then subjecting the doped polypyrrole hydrogel precursor to high-temperature carbonization for 2+ / -1 hours and high-temperature KOH pore-forming treatment for 1+ / -0.5 hours to obtain a required carbon material; and mixing the carbon material with a few binding agent and acetylene black and preparing the mixture into a thin film ina manner of direct pressurization, or roller rolling and pressing and the like, wherein the thin film serves as a supercapacitor electrode, the supramolecular dopant is phthalocyanine compound salt comprising one of copper phthalocyanine, nickel phthalocyanine and cobalt phthalocyanine. The doped polypyrrole hydrogel is a conductive polymer of the microstructure shaped as staggered nanowires, andis favorable for the transport of ions in an electrolyte.

Description

technical field [0001] The invention relates to the field of carbon-based materials, in particular to the synthesis and preparation of a supercapacitor electrode material based on carbon materials. Background technique [0002] The rapid development of today's portable electronic equipment, electric vehicles and other fields, as well as the demand for energy conservation and environmental protection, put forward high demands on the charge and discharge rate, specific capacity, life and green safety of energy storage devices. Supercapacitors have been widely studied and applied due to their excellent rate performance and stability. Among them, the supercapacitor electrode material is the key factor that determines its performance in all aspects. Most of the current supercapacitor electrode materials are usually difficult to prepare, expensive, or limited by capacitance. The supercapacitor electrode material involved in the invention has the advantages of simple preparation,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/24H01G11/44H01G11/34H01G11/86
CPCH01G11/24H01G11/34H01G11/44H01G11/86Y02E60/13
Inventor 潘力佳赖力赵宇应曙
Owner NANJING UNIV
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