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A kind of reed flower biochar-based electrode material and preparation method thereof

A biochar and base electrode technology, applied in battery electrodes, biochemical fuel cells, circuits, etc., can solve the problems of unsuitable supercapacitor electrode materials and low electrochemical activity, and achieve easy operation, high nitrogen doping, and easy manufacturing hole effect

Active Publication Date: 2022-03-25
深圳市瑞斯伟新能源有限公司
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  • Description
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  • Application Information

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Problems solved by technology

At present, there have been studies on the preparation of porous carbon materials using natural products, but the electrochemical activity is low, which is not suitable for supercapacitor electrode materials

Method used

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  • A kind of reed flower biochar-based electrode material and preparation method thereof
  • A kind of reed flower biochar-based electrode material and preparation method thereof
  • A kind of reed flower biochar-based electrode material and preparation method thereof

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Embodiment 1

[0026] Put 3 g of washed and dried reed flowers into a tube furnace, heat up to 700° C. at a heating rate of 3° C. / min in a nitrogen atmosphere, and then carbonize at a constant temperature for 2 hours. After the temperature dropped to room temperature, the carbonized product was ground, soaked with 1mol / L HCl to remove impurities, and then washed with deionized water until neutral. Finally, it was dried at 110°C, and the obtained reed flower biochar sample was named RFC;

[0027] Immerse 3g of RFC in 80ml of potassium hydroxide solution with a concentration of 6mol / L for 12h, then dry it at 110°C to a constant weight, and in a nitrogen atmosphere, heat up to 700°C at a heating rate of 3°C / min and then keep the temperature for 2h Activation, the cleaning method of the sample after activation is the same as that of RFC, and the sample is named RFAC;

[0028] Soak 3g of RFAC in 80ml of potassium hydroxide solution with a concentration of 6mol / L, add 0.6g of diethanolamine and s...

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Abstract

This case involves a reed flower biochar-based electrode material and its preparation method, including carbonizing reed flowers in a nitrogen atmosphere, then using potassium hydroxide as an activator and a nitrogen-containing compound as a nitrogen doping agent for high-temperature activation and nitrogen doping. The reed flower biochar was mixed with acetylene black and polytetrafluoroethylene emulsion, then pressed into tablets and dried to obtain the reed flower biochar-based electrode material. In the present invention, reed flowers are selected to prepare electrode materials, and carbonization-activation-pore-forming-nitrogen doping is completed in one step. The preparation process is simple and easy to operate; Chemical reaction, so that it can better combine with biomass carbon, and the amount of nitrogen doping is high; at the same time, diethanolamine itself is alkaline and water-soluble, and it is easy to enter the interior of plant fibers, and it is easier to create pores during high-temperature carbonization. Act as a nitrogen doping agent and auxiliary pore-forming agent in the process.

Description

technical field [0001] The invention relates to the technical field of electrode material preparation, in particular to a reed flower biochar-based electrode material and a preparation method thereof. Background technique [0002] Today, with environmental problems and fuel energy shortages becoming more and more prominent, it has become an irreversible trend to vigorously develop clean and renewable energy. The development of new high-efficiency energy storage devices is an important part of the study of sustainable energy utilization. Supercapacitors, lithium-ion batteries, lithium-sulfur batteries, and other rechargeable batteries are considered promising energy storage devices. Supercapacitors have the advantages of environmental protection, high specific capacitance, fast charging and discharging, large storage capacity, and long cycle life. They are widely used in industrial fields such as military and automobiles. The electrode material in a supercapacitor is the mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M4/96H01M8/16
CPCH01M4/88H01M4/96H01M8/16Y02P70/50Y02E60/50
Inventor 杜彬周慧王斌胡博闻邓忠月陈龙何燕
Owner 深圳市瑞斯伟新能源有限公司
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