Preparation method of solid oxide fuel cell/electrolytic cell connector

A solid oxide and fuel cell technology, applied in fuel cells, electrolytic components, electrolytic processes, etc., can solve problems such as increasing battery internal resistance, SOFC performance degradation, etc., to improve bonding strength, life and stability, technology Mature and stable effect

Active Publication Date: 2021-08-31
GUANGDONG INST OF NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Cr will increase the internal resistance of the battery after oxidation at high temperature, and will volatilize and poison the cathode, resulting in the degradation of SOFC performance.

Method used

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  • Preparation method of solid oxide fuel cell/electrolytic cell connector
  • Preparation method of solid oxide fuel cell/electrolytic cell connector
  • Preparation method of solid oxide fuel cell/electrolytic cell connector

Examples

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preparation example Construction

[0046] The preparation method of the solid oxide fuel cell / electrolyzer connector provided by the application may comprise the following steps:

[0047] Step 1: Design and model the structure-function integration of the solid oxide fuel cell / electrolyzer junction. please combine Figure 1 to Figure 7 , the solid oxide fuel cell / electrolytic cell connector includes a connector body 1 and a protective coating 2 on the surface of the connector body.

[0048] The connector body 1 has a first surface 101 and a second surface 102 opposite to each other.

[0049] The connecting body body 1 is provided with at least four through holes all passing through the first surface 101 and the second surface 102 . The first surface 101 has an opposite first side 103 and a second side 104, and the second surface also has an opposite first side 103 and a second side 104, that is, the first side 103 of the first surface and the second side of the second surface. One side 103 is in the same dire...

Embodiment 1

[0086] This embodiment provides a solid oxide fuel cell / electrolytic cell connecting body, which adopts the selective laser melting technology (SLM) and the plasma spraying technology to realize the manufacture of the SOFC connecting body.

[0087] The specific manufacturing process of the SOFC connector is as follows:

[0088] (1) Integrative design of structure and function, rationally plan the structure, material and thickness of the metal part (ie, the connector body 1) and the coating 2 part. Specifically: the material of the connector body 1 is 430 stainless steel powder with a thickness of 3 mm, and the material of the coating 2 (protective coating) is (Mn, Co) 3 o 4 , with a thickness of 30 μm.

[0089] (2) Three-dimensional modeling, the specific design structure is as follows figure 1 , figure 2 and Figure 5 shown.

[0090] The shape of the connector body 1 is a cube, and the front and back sides of the cube are respectively a first surface 101 and a second s...

Embodiment 2

[0100] This embodiment provides a solid oxide fuel cell / electrolytic cell connecting body, which adopts the method of manufacturing the SOFC connecting body by using the selected area electron beam melting technology (SLM) and the plasma spraying technology.

[0101] The manufacturing process of the SOFC connector is as follows:

[0102] (1) Integrative design of structure and function, rationally plan the structure, material and thickness of the metal part (ie, the connector body 1) and the coating 2 part. Specifically: the material of the connector body 1 is Crofer22, the thickness is 4mm, and the material of the coating 2 (protective coating) is (Mn, Co) 3 o 4 , with a thickness of 50 μm.

[0103] (2) Three-dimensional modeling, the specific design structure is as follows Figure 3 to Figure 5 shown.

[0104] The difference between this structure and Embodiment 1 is that starting from the end of the first side 103 close to the fourth side 106, clockwise, the first air i...

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Abstract

The invention discloses a preparation method of a solid oxide fuel cell / electrolytic cell connector, and belongs to the technical field of fuel cells / electrolytic cells. The method comprises the following steps: designing and modeling a solid oxide fuel cell / electrolytic cell connector; carrying out position placement, format conversion, defect repair and slicing processing on the model of the connector body; preparing the connector body by adopting an additive manufacturing method; carrying out post-treatment on the connector body; and preparing the protective coating by adopting a spraying or coating method. And the connector body is prepared by adopting an additive manufacturing method, so that refined preparation of a complex structure of the connector body can be realized. Controllable preparation of the high-quality connector can be achieved, the consistency of the connector is remarkably improved, the stability of a fuel cell / electrolytic cell stack is improved, and the service life of the fuel cell / electrolytic cell stack is prolonged. Meanwhile, the preparation method disclosed by the invention is short in period and low in cost, and has stronger practical significance on popularization and application of the fuel cell / electrolytic tank.

Description

technical field [0001] The invention relates to the technical field of fuel cells / electrolytic cells, in particular to a method for preparing a solid oxide fuel cell / electrolytic cell connector. Background technique [0002] Solid oxide fuel cell (SOFC) is a kind of fuel cell, which directly converts the chemical energy in the fuel into electrical energy through a chemical reaction. It is mainly composed of three parts: the anode layer, the electrolyte layer and the cathode layer. Compared with traditional heat engine power generation technology, the biggest feature of SOFCs is that the power generation process does not involve combustion, so its energy conversion efficiency is not limited by the Carnot cycle. The primary electrical efficiency can reach 50%-60%, and after being linked with the steam turbine, the energy conversion efficiency can reach more than 80%. At the same time, SOFC is friendly to the environment, and the pollutant discharge generated in the power gene...

Claims

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Application Information

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IPC IPC(8): H01M8/0245H01M8/0258H01M8/0263H01M8/0247H01M8/1231C25B9/65
CPCH01M8/0245H01M8/0258H01M8/0263H01M8/0247H01M8/1231C25B9/65Y02P70/50
Inventor 刘敏董东东宋琛刘太楷文魁周克崧马文有邓春明
Owner GUANGDONG INST OF NEW MATERIALS
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