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Mixed conduction type solid oxide electrolytic tank and preparation method thereof

Pending Publication Date: 2021-11-23
北京思伟特新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present invention aims to provide a mixed conduction solid oxide electrolytic cell and its preparation method to solve the problems of large polarization loss, long heating time and high energy consumption in the prior art

Method used

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  • Mixed conduction type solid oxide electrolytic tank and preparation method thereof
  • Mixed conduction type solid oxide electrolytic tank and preparation method thereof
  • Mixed conduction type solid oxide electrolytic tank and preparation method thereof

Examples

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Embodiment 1

[0064] One embodiment of the present invention discloses a mixed conduction type solid oxide electrolytic cell, such as figure 1 As shown, it includes a porous metal support layer 6, a cathode layer 5, an electrolyte layer 3 and an anode layer 1 sequentially from bottom to top.

[0065] The porous metal support layer 6 is made of stainless steel whose main components are ferrite and cadmium. The porous metal support layer 6 is used as the support of the H-SOEC. Due to the addition of the metal support part, compared with other support methods, the electrons have the least path, so the polarization loss during the operation of the electrolytic cell can be reduced. Due to the good ductility of metal and better plasticity than ceramic materials, it is convenient to process, which can reduce the processing difficulty of H-SOEC and reduce the processing cost. Since the thermal conductivity of metal is better than that of ceramics, it can ensure that the H-SOEC will start up more q...

Embodiment 2

[0079] Optimizing on the basis of Example 1, the mixed conduction type solid oxide electrolytic cell also includes a functional layer one 4, a functional layer two 2, such as image 3 shown.

[0080] Functional layer one 4 is disposed between the cathode layer 5 and the electrolyte layer 3, and is used to fill the voids on the upper surface of the cathode layer and smooth its surface morphology. Preferably, the material used for the functional layer 4 is made by mixing the material of the electrolyte layer and the material of the cathode layer at a ratio of 1:1 and then ball milling in ethanol. This ratio can better modify the cathode morphology and fill the voids, thereby reducing the contact resistance of the cathode.

[0081] The functional layer 2 is arranged between the anode layer 1 and the electrolyte layer 3, and is used to fill the voids on the lower surface of the anode layer and smooth its surface morphology. Preferably, the material used for the functional layer ...

Embodiment 3

[0091] The present invention also discloses a method for preparing the mixed conduction type solid oxide electrolytic cell described in Example 1, which is characterized in that it includes the following steps:

[0092] S1. Prepare NBSCF powder, BZCYYb powder and NiO powder respectively;

[0093] S2. Prepare a porous metal support layer 6; mix ferrite and cadmium according to the mass ratio of 18.5:81.5, and then sequentially undergo calcination and pore-making processes to obtain a porous metal support layer 6; make the center of the porous metal support layer 6 a porous area , the edge is a non-porous region. Preferably, the porous area accounts for 60% to 80% of the total area, the pore diameter is 50 microns, and the distance between the holes is consistent;

[0094] S3. After mixing NBSCF powder and BZCYYb powder in a mass ratio of 4:1, add a binder, and sequentially undergo ball milling and calcination processes to obtain the cathode layer material, and uniformly spin-c...

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Abstract

The invention provides a mixed conduction type solid oxide electrolytic tank and a preparation method thereof, belongs to the technical field of solid oxide electrolytic tanks, and solves the problems of large polarization loss, overlong heating time and overhigh energy consumption in the prior art. The electrolytic tank sequentially comprises a porous metal supporting layer (6), a cathode layer (5), an electrolyte layer (3) and an anode layer (1) from bottom to top. The porous metal supporting layer (6) is made of a stainless steel material of which the main components are ferrite and cadmium; the cathode layer (5) is made of a mixed material of which the main components are Ni and BZCYYb; the electrolyte layer (3) is made of a material of which the main component is BZCYYb; and the anode layer (1) is made of a mixed material of which the main components are NBSCF and BZCYYb. The electrolytic tank has the functions of low energy consumption and quick start.

Description

technical field [0001] The invention relates to the technical field of solid oxide electrolytic cells, in particular to a mixed conduction solid oxide electrolytic cell and a preparation method thereof. Background technique [0002] The mixed conduction solid oxide electrolytic cell (H-SOEC) is an advanced electrochemical energy conversion device, which can use the electric energy and heat energy generated by clean primary energy to generate H 2 O is used as a raw material, and hydrogen is produced by electrolysis with high efficiency, realizing large-scale energy efficient conversion and storage. Because H-SOEC has the characteristics of high conversion efficiency, simplicity, flexibility, and environmental friendliness, it is currently a research hotspot in the international energy field. [0003] At present, the mixed conduction solid oxide electrolytic cell (H-SOEC) has a large polarization loss of the electrolytic cell, difficult processing and sealing, long heating ti...

Claims

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Application Information

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IPC IPC(8): C25B1/04C25B9/60C25B11/04C25B11/052C25B11/054C25B11/069
CPCC25B1/04C25B9/60C25B11/04C25B11/052C25B11/054C25B11/069Y02E60/36
Inventor 赵宇轩王恩华胡浩然刘亚迪
Owner 北京思伟特新能源科技有限公司
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