Preparation method of nitrogen-oxygen co-doped porous carbon/ferroferric oxide composite material and application of nitrogen-oxygen co-doped porous carbon/ferroferric oxide composite material in supercapacitor electrode

A technology of ferroferric oxide and composite materials, which is applied in the field of inorganic functional materials and electrochemical energy, which can solve the problems of low tap density, poor conductivity, and high cost, and achieve good specific capacitance, excellent electrical properties, and good application prospects Effect

Active Publication Date: 2018-02-02
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although carbon materials have many advantages such as good electrical conductivity and chemical stability, low price, simple preparation, and environmental friendliness, their specific capacitance is only 200 F/g at the highest, and their tap density is low, resulting in low volume specific capacitance. , thus limiting its wide application
The specific capacitance of ruthenium dioxide in transition metal oxides is very high, but the hig...

Method used

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  • Preparation method of nitrogen-oxygen co-doped porous carbon/ferroferric oxide composite material and application of nitrogen-oxygen co-doped porous carbon/ferroferric oxide composite material in supercapacitor electrode
  • Preparation method of nitrogen-oxygen co-doped porous carbon/ferroferric oxide composite material and application of nitrogen-oxygen co-doped porous carbon/ferroferric oxide composite material in supercapacitor electrode
  • Preparation method of nitrogen-oxygen co-doped porous carbon/ferroferric oxide composite material and application of nitrogen-oxygen co-doped porous carbon/ferroferric oxide composite material in supercapacitor electrode

Examples

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Embodiment 1

[0035] (1) Weigh cyclopentadienyl iron (Fe(C 5 h 5 ) 2 )10mmol, measure 2mL hexachlorobutadiene (C 4 Cl 6 ) and 28mL pyridine were added to the polytetrafluoroethylene reactor liner of 50mL, as iron source and carbon source respectively, mixed;

[0036] (2) After sealing, put it into a stainless steel high-temperature reaction kettle, tighten the lid of the reaction kettle, and place it in an oven at 200°C for 6 hours;

[0037] (3) Naturally cool to room temperature, turn off the power of the oven, open the reaction kettle, transfer all the products in the kettle to a glass watch glass, place it in an oven at 120°C, and dry it for 6 hours. Collect the dried sample in a reagent bottle ;

[0038] (4) Take an appropriate amount of sample and place it in a porcelain boat, place it in the middle part of the quartz tube of the tube furnace, pass argon gas for 30 minutes, and exhaust the air in the tube; then set the temperature and reaction time heating program, and the heating...

Embodiment 2-4

[0040] With the step in embodiment 1, except taking by weighing cyclopentadienyl iron (Fe(C) in (1) step in embodiment 1 5 h 5 ) 2 ) is replaced by 5mmol, 15mmol, 20mmol, other operations are unchanged, the marks of the obtained materials are 5-Fe-N-C-400, 15-Fe-N-C-400, 20-Fe-N-C-400 in turn;

Embodiment 5-6

[0042] The same as the steps in Example 1, except that the temperature of the tube furnace in step (4) in Example 1 was raised to 300°C and 500°C, the other operations were unchanged, so that the marking of the material was 10-Fe- N-C-300, 10-Fe-N-C-500;

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Abstract

The invention relates to a preparation method of a nitrogen-oxygen co-doped porous carbon/ferroferric oxide composite material. The method comprises the following steps of (1) weighing certain parts by weight of cyclopentadienyl iron, hexachlorobutadiene and pyridine, adding the cyclopentadienyl iron, the hexachlorobutadiene and the pyridine to a polytetrafluoroethylene reactor tank and mixing; (2) sealing the polytetrafluoroethylene reactor tank, putting the polytetrafluoroethylene reactor tank into a high temperature reactor, tightening a reactor cover, and putting the reactor into an oven to react at 180-220 DEG C for 6-24h; (3) cooling to a room temperature, opening the reactor, putting a product into the oven and drying at 120 DEG C for 6h; and (4) putting a moderate amount of sampleinto the middle part of a quartz tube of a tube furnace, introducing argon, evacuating the air in the tube, slowly heating the tube furnace at a heating rate of 10 DEG C/min, maintaining the temperature for 60-120min, automatically cooling an instrument, cooling and closing the gas to obtain the nitrogen-oxygen co-doped porous carbon/ferroferric oxide composite material. The nitrogen-oxygen co-doped porous carbon/ferroferric oxide composite material has excellent electrical property, is used for preparing a supercapacitor electrode, and has great potential in the field of electrochemistry.

Description

technical field [0001] The invention provides a composite material and its preparation method and application, specifically, a preparation method of a nitrogen-oxygen co-doped porous carbon / ferric oxide composite material and its application in supercapacitor electrodes, The invention belongs to the technical field of inorganic functional materials and electrochemical energy. Background technique [0002] In the current information age, people have higher requirements for energy storage devices. As an energy storage device, supercapacitors have relatively simple working principles, high charge and discharge rates (power density), good stability and Therefore, it has become the object of extensive attention and research. [0003] But compared with lithium battery, the energy density of supercapacitor is still relatively small (Science, 2008.321(5889):pp.651-652.), its energy density can pass E=0.5CU 2 Calculate (C: specific capacitance, unit F / g; U: voltage, unit V), so whe...

Claims

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Application Information

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IPC IPC(8): H01G11/30H01G11/32H01G11/46H01G11/86
CPCY02E60/13H01G11/30H01G11/32H01G11/46H01G11/86
Inventor 金辉乐刘萌王舜董小妹冯鑫颜成展王继昌叶香珠
Owner WENZHOU UNIVERSITY
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