Preparation method of electrolyte-supported solid oxide fuel cell zirconium-based electrolyte thin film

A solid oxide and electrolyte thin film technology, which is applied in fuel cells, electrochemical generators, circuits, etc., can solve problems such as uneven thickness, multiple calcinations, and large thickness of zirconium-based electrolyte membranes, achieving a high success rate.

Active Publication Date: 2019-02-15
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems that the existing zirconium-based electrolyte membrane has a large and uneven thickness, multiple calcinations are required in the preparation process, and the preparation process is complicated, the present invention provides a method for preparing an electrolyte-supported zirconium-based electrolyte membrane for a solid oxide fuel cell, realizing zirconium The preparation of the base electrolyte film is large-scale, ultra-thin and uniform, and the preparation process is simple, only one high-temperature calcination is required

Method used

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  • Preparation method of electrolyte-supported solid oxide fuel cell zirconium-based electrolyte thin film
  • Preparation method of electrolyte-supported solid oxide fuel cell zirconium-based electrolyte thin film
  • Preparation method of electrolyte-supported solid oxide fuel cell zirconium-based electrolyte thin film

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Embodiment 1

[0029] Using PVB (polyvinyl butyral) as the base material, YSZ (8% yttrium-stabilized zirconia) as the electrolyte, and plant ash as the colored substance, the YSZ electrolyte film was prepared.

[0030] In the first step, the PVB powder and plant ash are mixed evenly according to the mass ratio of 49:1, and 0.1 gram of the mixed powder is weighed and molded into a thin sheet with a thickness of about 230 microns with a tablet press with a diameter of 13 mm under 80 MPa pressure for 30 seconds;

[0031] In the second step, 0.04 g of electrolyte YSZ powder is evenly spread on the surface of the sheet, co-pressed and molded, and demolded to form a substrate / electrolyte double-layer green body;

[0032] The third step is to place one side of the electrolyte layer in the substrate / electrolyte double-layer green body on a zirconia plate, place it in an oven, keep it at 150°C for 1 hour, and then quench it with liquid nitrogen at 25°C to make The base layer shrinks suddenly and is c...

Embodiment 2

[0036] Increase the electrolyte YSZ powder in the second step to 0.06g, and the rest of the steps are the same as in Example 1.

[0037] Such as image 3 As shown, the thickness of the prepared electrolyte film is 120 μm.

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Abstract

The invention relates to a preparation method of an electrolyte-supported solid oxide fuel cell zirconium-based electrolyte thin film and belongs to the technical field of solid oxide fuel cell electrolyte thin films. Aiming at the problems that the conventional zirconium-based electrolyte film is large and non-uniform in thickness, multiple calcinations are required in the preparation process, and the preparation process is complex, the electrolyte-supported solid oxide fuel cell zirconium-based electrolyte thin film is prepared in four steps: dry-pressing, heating, quenching and calcination.The preparation method can accurately prepare the required thickness of electrolyte thin film according to the quality of electrolyte powder; the obtained thin film is compact and uniform.

Description

technical field [0001] The invention belongs to the technical field of preparation of solid oxide fuel cell electrolyte membranes, and in particular relates to a preparation method of an electrolyte-supported solid oxide fuel cell zirconium-based electrolyte membrane. Background technique [0002] Solid oxide fuel cell (SOFC) is a new type of clean power generation device that directly converts chemical energy into electrical energy. It has the advantages of high efficiency, convenience, environmental friendliness and strong practicability. and other fields have extremely broad application prospects. At present, the medium and low temperature of SOFCs is the key to the commercial development of SOFCs. Studies have shown that the thin film of electrolyte materials is the main way to achieve the medium and low temperature of SOFCs. During the working process of SOFCs, the electrolyte is the bridge connecting the cathode and anode of the fuel cell, and plays the role of transf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1069
CPCH01M8/1069Y02E60/50Y02P70/50
Inventor 陈绘丽常宏闫菁李思殿
Owner SHANXI UNIV
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