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Equipment and method for preparing supercapacitor material through mesophase pitch

A technology of mesophase pitch, supercapacitor

Pending Publication Date: 2018-11-06
湖南碳谷装备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the definition of the International Union of Pure and Applied Chemistry (IUPAC), porous carbon materials can be divided into three categories according to their pore diameters: micropores (less than 2 nm); mesoporous (2–50 nm) and macropores (larger than 50 nm), according to the structural characteristics of porous carbon materials, if the pores of porous carbon materials are not long-range ordered, the shape of the pores is irregular, and the pore size distribution range is wide, its ability to absorb electricity is poor, which directly limits the application in supercapacitors. Application, most of the current production uses the activation method for processing. However, due to the wide variety of existing equipment and preparation methods, the prepared porous carbon materials are often irregular in shape and wide in pore size distribution. It is difficult to obtain in processing.

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  • Equipment and method for preparing supercapacitor material through mesophase pitch
  • Equipment and method for preparing supercapacitor material through mesophase pitch
  • Equipment and method for preparing supercapacitor material through mesophase pitch

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preparation example Construction

[0035] A kind of preparation method of the equipment of mesophase pitch preparation supercapacitor electrode material, its steps are as follows:

[0036] Step A: Heat the water vapor generated by the water steam generator through the air heater into superheated steam at a temperature of 950°C-1200°C, adjust the output pressure of the air heater to 4-20bar, and send it to the activation heating device ;

[0037] Step B: Select a mesophase pitch raw material with a softening point of 120°C-260°C and an average molecular weight of 800-1600. This raw material has low viscosity, good fluidity, and high carbon yield, and heats it through the reactor to 150-200 ℃, after heating and melting, it is sprayed into the activation heating device through an ultrasonic atomizer;

[0038] Step C: The potassium hydroxide powder with a particle size of 200-500 mesh is sent into the activation heating device through a powder injector, and the potassium hydroxide powder and the mesophase pitch ar...

Embodiment 1

[0045] The water vapor generated by the steam generator is heated by the air heater to become superheated steam at a temperature of 950°C, the output pressure of the air heater is adjusted to 4bar, and sent to the activation heating device; the softening point is selected as 200°C, The mesophase pitch raw material with an average molecular weight of 800 is heated to 200°C through a reaction kettle, and after heating and melting, it is sprayed into an activation heating device through an ultrasonic atomizer; potassium hydroxide powder with a particle size of 300 mesh is sprayed The feeder is sent into the activation heating device, the potassium hydroxide powder and the mesophase pitch are sprayed against each other, and the mixture is fully mixed. The potassium hydroxide and the mesophase pitch are fully carbonized and activated in the heating section, and the mass ratio is 4:1. The time is 2s; the mixture of porous carbon and potassium hydroxide after the activation reaction i...

Embodiment 2

[0048] The water vapor generated by the steam generator is heated by the air heater to become superheated steam at a temperature of 950°C, the output pressure of the air heater is adjusted to 4bar, and sent to the activation heating device; the softening point is selected as 200°C, The mesophase pitch raw material with an average molecular weight of 800 is heated to 200°C through a reaction kettle, and after heating and melting, it is sprayed into an activation heating device through an ultrasonic atomizer; potassium hydroxide powder with a particle size of 300 mesh is sprayed The feeder is sent to the activation heating device, the potassium hydroxide powder and the mesophase pitch are sprayed against each other, and the mixture is fully mixed. The potassium hydroxide and the mesophase pitch are fully carbonized and activated in the heating section, and the mass ratio is 6 to 1. The reaction The time is 2s; the mixture of porous carbon and potassium hydroxide after the activat...

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Abstract

The invention discloses a piece of equipment and a method for preparing a supercapacitor material through a mesophase pitch. The equipment comprises a steam generator, an air heater and an activatingand heating device, the activating and heating device is provided with a plurality of heating nodes, an atomization spray nozzle is arranged in an inlet of the heating node and is connected with an ultrasonic nebulizer, a feed end of the ultrasonic nebulizer is connected with a reaction kettle; a powder spray nozzle is arranged in an outlet of the heating node, and is connected with a powder spraying device; the activating and heating device is connected with a gas inlet end of a ceramic filter, the ceramic filter is sequentially connected with a cleaning device and a drying device; a cooler,a tail gas treatment device and an exhaust fan are sequentially connected to a gas outlet end of the ceramic filter. The invention aims at providing the equipment and the method for preparing the supercapacitor material through the mesophase pitch, the equipment can prepare a porous carbon material, pore passages of the porous carbon material are orderly, the shape of the pore passage is regular,the consistency of the pore passages is good, the specific capacitance of a prepared supercapacitor is large, and the product consistency is good.

Description

technical field [0001] The invention belongs to the field of supercapacitor preparation, in particular to a device and a method for preparing supercapacitor electrode materials from mesophase pitch. Background technique [0002] Supercapacitors are a new type of energy storage device between batteries and traditional capacitors. They have the characteristics of high specific energy of batteries and high specific power of traditional capacitors. Supercapacitors also have the advantages of instantaneous high-current charge and discharge, wide operating temperature range, safety, and no pollution. Therefore, they have unique application advantages and broad application prospects in many occasions. [0003] Supercapacitors realize charge storage through two-dimensional or quasi-two-dimensional interactions between electrolyte ions and electrodes, and their performance mainly depends on their electrode materials. Commonly used supercapacitor electrode materials mainly include ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/39C01B32/318C01B32/348H01G11/44
CPCH01G11/44C01B32/318C01B32/348C01B32/39Y02E60/13
Inventor 王雄聂郁栋
Owner 湖南碳谷装备制造有限公司
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