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Nitrogen and sulfur-co-doped active carbon for supercapacitor and preparation method for nitrogen and sulfur-co-doped active carbon for supercapacitor

A technology of nitrogen-sulfur co-doping and activated carbon, applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of complex production process and high production cost, and achieve the effect of easy-to-obtain, low-cost raw materials, and high charge and discharge efficiency

Inactive Publication Date: 2015-11-25
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the production process of these new carbon materials is complex and the production cost is high

Method used

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  • Nitrogen and sulfur-co-doped active carbon for supercapacitor and preparation method for nitrogen and sulfur-co-doped active carbon for supercapacitor
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  • Nitrogen and sulfur-co-doped active carbon for supercapacitor and preparation method for nitrogen and sulfur-co-doped active carbon for supercapacitor

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preparation example Construction

[0030] A preparation method for preparing nitrogen-sulfur co-doped activated carbon by using the above composition, comprising the following process steps:

[0031] 1) Carbonization: ① Take the fruit of the sycamore plant and soak it in a container to make it soak into a spongy floc; ② Hydrothermal treatment: After removing impurities and cores, put the spongy floc into the reactor and seal it Hydrothermal treatment for 5-12 hours, the temperature is 180~220°C; ③Centrifugal water filtration; take out the cement-containing matter after hydrothermal treatment from the reactor for centrifugal water filtration; ④Drying: put the filtered granular matter into an oven Drying; ⑤ Grinding: Grinding the dried granules to obtain powder;

[0032] 2) Activation: Take 1-2 parts of the powder obtained in the above 1), and take 1-4 parts of the alkaline activator, mix them evenly, and put them into a tube furnace for activation. The activation process is: ① Use stage Heating and heat preserv...

Embodiment 1

[0034] A preparation method for preparing nitrogen-sulfur co-doped activated carbon by using the above composition, comprising the following process steps:

[0035] 1) Carbonization: ①Take the dried and mature Panghai fruit, soak it in a container to make it soak into a spongy floc; ②Hydrothermal treatment: After removing impurities and pitting, put the spongy floc into the reaction kettle and seal it Hydrothermal treatment for 12 hours at a temperature of 180°C; ③centrifugal water filtration; take out the cement-containing matter after hydrothermal treatment from the reactor for centrifugal water filtration; ④drying: put the filtered granular matter into an oven at 80°C for drying , the time is 12h; ⑤ Grinding: Grinding the dried granules to obtain powder;

[0036] 2) Activation: According to the ratio of parts by weight, take 1 part of the powder obtained in the above 1), and take 1 part of the alkaline activator, after mixing evenly, put it into a tube furnace for activatio...

Embodiment 2

[0039] 1) Carbonization: ① Take the dried and mature sycamore fruit and soak it in a container to make it soak into a spongy floc; Heat treatment for 12 hours at a temperature of 180°C; ③centrifugal water filtration; take out the cement-containing matter after hydrothermal treatment from the reactor for centrifugal water filtration; ④drying: put the filtered granular matter into an oven at 80°C for drying, The time is 12 hours; ⑤ Grinding: Grinding the dried granules to obtain powder;

[0040]2) Activation: According to the ratio of parts by weight, take 1 part of the powder obtained in the above 1), and take 2 parts of potassium carbonate, mix them evenly, and put them into a tube furnace for activation. The activation process is as follows: ① Use stage Heating and holding: at a heating rate of 2°C / min, heat from room temperature to 200°C for 60 minutes; heat to 450°C and hold for 60 minutes; heat to 650°C and hold for 120 minutes; heat to 800°C and hold for 120 minutes; ②Sl...

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Abstract

The invention discloses a nitrogen and sulfur-co-doped active carbon for a supercapacitor and a preparation method for nitrogen and sulfur-co-doped active carbon for the supercapacitor. The nitrogen and sulfur-co-doped active carbon for the supercapacitor is mainly prepared from the following components in parts by weight through carbonizing and activating processes: 1-2 parts of Dafa sterculiaceae plant fruits which are carbonized in powder and 1-4 parts of an alkaline activator. The preparation method comprises the following steps: (1) carrying out carbonization: 1, carrying out immersion; 2, carrying out hydro-thermal treatment; 3, carrying out centrifugal water filtration; 4, carrying out drying; and 5, carrying out grinding; and (2) carrying out activation: 1, raising and keeping temperature in a stage manner; 2, slowly reducing the temperature; 3, immersing in a hydrochloric acid solution; 4, carrying out water washing; and 5, carrying out drying to obtain the nitrogen and sulfur-co-doped active carbon. The nitrogen and sulfur-co-doped active carbon has the advantages: 1, the preparation process is simple; 2, the prepared active carbon is wide in pore distribution and high in specific surface area; and 3, the nitrogen and sulfur-co-doped active carbon has the advantages of being high in capacity, good in circulating performance, high in charging and discharging efficiencies and the like.

Description

technical field [0001] The invention belongs to the technical field of carbon materials, and in particular relates to a composition of activated carbon materials and a preparation method thereof, in particular to a nitrogen-sulfur co-doped activated carbon used for supercapacitors and a preparation method thereof. Background technique [0002] Supercapacitor is a new type of energy storage device, which has excellent characteristics such as high power density, short charging time, long service life, good temperature characteristics, energy saving and environmental protection. It is preferred and widely used by the electronics industry. At present, the electrode materials of supercapacitors are mainly made of carbon materials and transition metal oxides, among which carbon materials are still the most commonly used electrode materials in commercial supercapacitors. Traditional carbon materials have been unable to meet the requirements of supercapacitor development due to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12H01G11/34
CPCY02E60/13
Inventor 陈德志汪文秀权红英董应虎
Owner NANCHANG HANGKONG UNIVERSITY
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