Three-layered structured oxide fuel cell supported by stainless steel and preparation method thereof

A fuel cell and stainless steel technology, which is applied in fuel cells, fuel cell parts, solid electrolyte fuel cells, etc., can solve the problems of complex overall structure and preparation process of the battery, reduce the charge conduction efficiency of the battery, and achieve excellent thermal cycle resistance and anti-oxidation-reduction cycle and other resistance, safe long-term output, and the effect of increasing the active area

Inactive Publication Date: 2012-05-02
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Between the stainless steel support and the electrolyte film, relying on the anode functional layer to catalyze the electrochemical reaction, the overall structure and preparation process of the battery are complex
At the same time, in the preparation process, it is necessary to co-fire the anode functional layer containing nickel and the metal support body containing chromium at high temperature, and it is also possible to form NiCr 2 o 4 and other insulating layers, reducing the charge conduction efficiency of the battery

Method used

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  • Three-layered structured oxide fuel cell supported by stainless steel and preparation method thereof
  • Three-layered structured oxide fuel cell supported by stainless steel and preparation method thereof
  • Three-layered structured oxide fuel cell supported by stainless steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: SS430-YSZ(Ni-SDC) / YSZ / LSM-YSB three-layer structure stainless steel support SOFC

[0039] (1) Electrolyte YSZ (8mol% Y 2 o 3 -ZrO 2 ) powder and LSM in the cathode ((La 0.85 Sr 0.15 ) 0.9 SrMnO 3-δ ) and YSB((Y 0.25 Bi 0.75 ) 2 o 3 ) powder: Taking the synthesis of YSZ as an example, the pre-calibrated Y(NO 3 ) 3 , Zr(NO 3 ) 4 Mixed stoichiometrically, keeping Y 3+ and Zr 4+ The molar ratio of the substance is 0.16:0.92, forming the nitrate precursor Y 0.16 Zr 0.92 (NO 3 ) x solution, then add glycine as a complexing agent, the amount of required glycine is half of the total amount of nitrate ions, and stir for 1 hour to fully complex after glycine is dissolved. Then, take about 0.02mol of Y each time 0.16 Zr 0.92 (NO 3 ) x The precursor solution was placed in a 1000mL beaker, heated on a 500W electric hot plate, and the excess water was evaporated. After the solution becomes viscous, continue to heat, and the jelly starts to burn, and...

Embodiment 2

[0049] Embodiment 2: SS430-YSZ (Ni-CeO 2 ) / YSZ / LSM-YSB three-layer stainless steel support SOFC

[0050] (1) Electrolyte YSZ (8mol% Y 2 o 3 -ZrO 2 ) powder and LSM in the cathode ((La 0.85 Sr 0.15 ) 0.9 MnO 3-δ ) and YSB((Y 0.25 Bi 0.75 ) 2 o 3 ) powder: Taking the synthesis of LSM as an example, the pre-calibrated La(NO 3 ) 3 , Sr(NO 3 ) 2 and Mn(NO 3 ) 2 Mixed stoichiometrically, keeping La 3+ 、Sr 2+ and Mn 2+ The molar ratio of the substances is 0.765:0.135:1, forming the nitrate precursor La 0.765 Sr 0.135 Mn(NO 3 )x solution, then add glycine as a complexing agent, the amount of required glycine is half of the total amount of nitrate ions, and stir for 1 hour to fully complex after glycine is dissolved. Then, take about 0.02mol of La each time 0.765 Sr 0.135 Mn(NO 3 )x precursor solution was placed in a 1000mL beaker, heated on a 500W electric hot plate, and excess water was evaporated. After the solution becomes viscous, continue to heat, and th...

Embodiment 3

[0056] Example 3: SS430-YSZ(Ni-SDC) / YSZ / LSM-SDC three-layer structure stainless steel support SOFC

[0057](1) Electrolyte YSZ (8mol% Y 2 o 3 -ZrO 2 ) powder and LSM in the cathode ((La 0.85 Sr 0.15 ) 0.9 SrMnO 3-δ ) and SDC (Sm 0.2 Ce 0.8 o 1.9 ) powder: Taking the synthesis of SDC as an example, the pre-calibrated Sm(NO 3 ) 3 , Ce(NH 4 ) 2 (NO 3 ) 6 (Note: Practice found that Ce(NH 4 ) 2 (NO 3 ) 6 The performance of SDC powder made as raw material is higher than that of Ce(NO 3 ) 3 The performance is better at the time) mix according to the stoichiometric ratio, keeping Sm 3+ and Ce 4+ The molar ratio of the substances is 0.2:0.8, forming the nitrate precursor Sm 0.2 Ce 0.8 (NH 4 ) 1.6 (NO 3 ) x solution, and then add glycine as a complexing agent, the amount of glycine required is half of the total amount of nitrate ions (note: here need to deduct NH 4 + Can consume NO 3 - , each NH 4 + consume a NO 3 - ), and stir for 1 hour to fully comp...

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Abstract

The invention relates to solid fuel battery, in particular to a solid oxide fuel cell supported by stainless steel and a preparation method thereof. A cell structure comprises an anode 1, an electrolyte film 3 and a cathode 4; the anode 1 is a porous stainless steel supported body, wherein the pore of the porous stainless steel supported body contains catalyst 2 capable of catalyzing an electrochemical reaction of the solid oxide fuel cell anode; the thickness of the stainless steel supported body is 0.1 mm to 3 mm; the porosity is 10% to 60%, while the thickness of a compact electrolyte film is 2 microns to 80 microns. The solid oxide fuel cell supported by the stainless steel is proved that the cell has good output performance and resistance to oxidization and reduction.

Description

technical field [0001] The invention relates to a solid fuel cell, in particular to a solid oxide fuel cell supported by stainless steel and a preparation method thereof. Background technique [0002] Solid oxide fuel cell (SOFC) is a new energy conversion device with high efficiency and cleanliness. Its various key materials, research and development of preparation technology, as well as corresponding battery configuration and battery stack design have been well received by researchers and scientific research institutions all over the world. of general concern. Generally speaking, the configuration of SOFC single cell mainly includes three types: electrolyte support (ESC), anode support (ASC) and cathode support (CSC). For these three configurations of single cells, their supports are all brittle ceramic or cermet materials in composition, and also contain more or less noble metal materials. Considering the low cost, high conductivity, high strength and easy processing ch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/10H01M8/02H01M8/0232H01M8/1067
CPCY02E60/522Y02E60/50
Inventor 夏长荣刘张波刘蓓蓓
Owner UNIV OF SCI & TECH OF CHINA
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