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Method for preparing carbon nanomaterial by using high temperature solid oxide fuel cell

A technology of solid oxide and nano-carbon materials, applied in fuel cells, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problems of high cost and complicated process, and achieve low preparation cost and simple process , the effect of easy gasification

Inactive Publication Date: 2019-01-29
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Taking graphene as an example, the current methods of preparing nano-carbon materials usually include mechanical exfoliation, chemical vapor deposition, oxidation-reduction, and solution ultrasonic exfoliation, but these methods have problems such as complex process and high cost.

Method used

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  • Method for preparing carbon nanomaterial by using high temperature solid oxide fuel cell
  • Method for preparing carbon nanomaterial by using high temperature solid oxide fuel cell
  • Method for preparing carbon nanomaterial by using high temperature solid oxide fuel cell

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Experimental program
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Effect test

Embodiment 1

[0026] In this embodiment, the schematic diagram of the SOFC battery structure is a ceramic electrolyte battery supported by flat-plate electrodes, and its structure is as figure 1 As shown, the anode support layer 1, the electrolyte layer, and the cathode layer are stacked up and down in the thickness direction. The electrolyte layer includes a first electrolyte layer 22 and a second electrolyte layer 21. The first electrolyte layer 22 is located on the upper surface of the anode support layer 1, and the second electrolyte layer 21 is located on the lower surface of the anode support layer 1. The first barrier layer 32 is located on the upper surface of the first electrolyte layer 22, and the second barrier layer 31 is located on the lower surface of the second electrolyte layer 21. The cathode layer includes an upper first cathode layer 42 and a second cathode layer 41. The first cathode layer 42 is located on the upper surface of the first barrier layer, and the second cathod...

Embodiment 2

[0049] In this embodiment, the structure of the SOFC cell and the preparation method thereof are completely the same as those in the first embodiment.

[0050] When the SOFC battery is in working condition, pass ethanol, carbon monoxide and water with a molar ratio of 4:3:2 into the pores, and electrochemically react with oxygen ions in the three-phase regions on the upper and lower sides of the anode support layer, and at the same time in the Ni base Carbon deposition occurs on the anode layer substrate. Through the effect of different battery current densities, the size of the oxygen ion current can be controlled, thereby controlling the deposition rate of carbon to obtain the desired form of carbon deposition. When the control battery current density is 0.2A / cm 2 , The SEM image of the obtained carbon material is similar figure 2 As shown, the particle size of the carbon material is on the order of nanometers, and the carbon particles are more uniformly precipitated on the an...

Embodiment 3

[0052] In this embodiment, the structure of the SOFC cell and the preparation method thereof are completely the same as those in the first embodiment.

[0053] When the SOFC battery is in working condition, pass ethanol, carbon monoxide, and water in a molar ratio of 5:4:3 into the pores, and electrochemically react with oxygen ions in the three-phase regions on the upper and lower sides of the anode support layer, and at the same time in the Ni base Carbon deposition occurs on the anode layer substrate. Through the effect of different battery current densities, the size of the oxygen ion current can be controlled, thereby controlling the deposition rate of carbon to obtain the desired form of carbon deposition. When the control battery current density is 0.5A / cm 2 , The SEM image of the obtained carbon material is similar figure 2 As shown, the particle size of the carbon material is on the order of nanometers, and the carbon particles are more uniformly precipitated on the ano...

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Abstract

The invention provides a method for preparing a carbon nanomaterial by using a high temperature solid oxide fuel cell. According to the method, Ni-based anode carbon deposition technology is adopted;a fuel gas composed of ethanol, carbon monoxide and water is selected, and the molar ratio of the ethanol, the carbon monoxide and the water is controlled to be (3-5): (2-4): (1-3); at the same time,the density of a working current of the SOFC is adjusted to be 0.1-1 A / cm<2>; and a uniform and stable carbon nanomaterial is obtained. The method has the advantages of low preparation cost, simple process and continuous stability, and provides a new idea for preparing the carbon nanomaterial.

Description

Technical field [0001] The invention relates to the field of nano carbon materials and high-temperature solid oxide fuel cells, and in particular to a method for preparing nano-carbon materials by using high-temperature solid oxide fuel cells. Background technique [0002] Because of its controllable surface chemical properties, high specific surface area, and environmental friendliness, nano-carbon materials have received extensive attention from researchers in various fields in recent years. Taking graphene as an example, the current preparation methods of carbon nanomaterials usually include mechanical exfoliation, chemical vapor deposition, oxidation-reduction, and solution ultrasonic exfoliation. However, these methods have problems such as complex process flow and high cost. [0003] Solid Oxide Fuel Cell (SOFC) is a fuel cell with a completely solid structure that operates in a high-temperature environment. During operation, fuel gas and oxidizing gas are fed into the anode ...

Claims

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Application Information

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IPC IPC(8): C25B1/00C25B9/04B82Y30/00B82Y40/00H01M4/86
CPCB82Y30/00B82Y40/00C25B1/00C25B9/65H01M4/8621H01M8/1253Y02E60/50
Inventor 吴傲路官万兵刘武卜瑶徐铭
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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