Method for preparing connector-free positive electrode-supported solid oxide fuel cell stack by 3D printing

A technology of solid oxides and fuel cell stacks, which is applied in the direction of fuel cells, battery electrodes, circuits, etc., can solve problems such as industrial applications that have not yet started, and achieve the goals of avoiding batch instability, improving mass transfer rate, and saving preparation costs Effect

Active Publication Date: 2018-09-28
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

3D printing technology is a growing processing method, which has been well applied in the fields of industrial modeling, packaging, manufacturing, construction, art, medicine, aviation, aerospace and film and television, but the real industrial application has not yet started. Using 3D printing There is no report on the preparation of anode-supported SOFC stacks without connectors

Method used

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  • Method for preparing connector-free positive electrode-supported solid oxide fuel cell stack by 3D printing
  • Method for preparing connector-free positive electrode-supported solid oxide fuel cell stack by 3D printing
  • Method for preparing connector-free positive electrode-supported solid oxide fuel cell stack by 3D printing

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Experimental program
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Effect test

Embodiment 1

[0057] Take 100g Ni-GDC (Gd 0.1 Ce 0.9 o 2-δ ) anode ceramic powder (particle size is 800nm), according to the proportion of 70wt.% powder, 27.3wt.% photosensitive resin and 2.7wt.% ethanol, stirring and mixing for 12 hours, ball milling for 4 hours to form a uniform slurry. Use Catia software to build a three-dimensional channel honeycomb anode support matrix model. The model has a length and width of 2cm and a height of 1cm. There are 28 ceramic microtubes in the vertical direction to provide fluid channels in the tubes, and 6 channels in the horizontal direction to provide fluid channels between the tubes. , whose structure is shown in figure 1 , imported into the CreationWorkshop software for slice printing. The 3D printer adopts the AOTOCERA ceramic 3D printer of Beijing Shiwei Technology Co., Ltd. Add the slurry into the resin tank, and use a computer to control the three-dimensional printer to print the slurry layer by layer according to the designed three-dimension...

Embodiment 2

[0063] 70g Ni-YSZ (Y 0.08 Zr 0.92 o 2-δ ) Anode ceramic powder (with a particle size of 500nm) and 7g of starch are uniformly mixed by a mixer, and the ingredients are mixed according to the ratio of 70wt.% powder, 27.3wt.% photosensitive resin, 1.4wt.% ethanol and 1.3wt.% PEG, and stirred After 12 hours, ball mill for 4 hours to form a uniform slurry. UG software is used to establish a three-dimensional channel honeycomb anode support matrix model. The length and width of the model are 2cm, and the height is 1cm. There are 28 ceramic microtubes in the vertical direction to provide fluid channels in the tube, and 6 channels in the horizontal direction to provide fluid channels between the tubes. , whose structure is shown in figure 1, imported into the CreationWorkshop software for slice printing. The 3D printer adopts the AOTOCERA ceramic 3D printer of Beijing Shiwei Technology Co., Ltd. Add the slurry into the resin tank, and use a computer to control the three-dimensio...

Embodiment 3

[0068] 70g Ni-SDC (Sm 0.2 Ce 0.8 o 2-δ ) Anode ceramic powder (with a particle size of 500nm) and 7g of starch were uniformly mixed with a mixer, and the ingredients were mixed according to the ratio of 70wt.% powder and 30wt.% photosensitive resin, stirred and mixed for 20 hours, and then ball milled for 2 hours to form a uniform slurry. Use 3DMax software to build a three-dimensional channel honeycomb anode support matrix model. The model is 2cm in length and width and 1cm in height. There are 28 ceramic microtubes in the vertical direction to provide fluid channels in the tubes, and 6 channels in the horizontal direction to provide fluid channels between tubes. , whose structure is shown in figure 1 , imported into the CreationWorkshop software for slice printing. The 3D printer adopts the AOTOCERA ceramic 3D printer of Beijing Shiwei Technology Co., Ltd. Put the slurry into the resin tank, use the computer to control the three-dimensional printer to print the slurry la...

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Abstract

The invention belongs to the technical field of a solid oxide fuel cell stack, and particularly relates to a method for preparing a connector-free positive electrode-supported solid oxide fuel cell stack by 3D printing. The method comprises the steps of taking mixed paste of positive electrode ceramic powder and photosensitive resin as a raw material, and preparing a three-dimensional channel honeycomb positive electrode supported matrix by 3D printing; and obtaining a positive electrode-supported solid oxide fuel cell by an impregnation method, performing effective abutting and sealing in a mode of a negative electrode, a positive electrode and a negative electrode, and forming the connector-free positive electrode-supported solid oxide fuel cell stack after connection in series. A plurality of positive electrode-supported solid oxide fuel cells are effectively contacted, abutted and sealed according to the mode of the negative electrode, the positive electrode and the negative electrode, series connection of the plurality of positive electrode-supported solid oxide fuel cells can be achieved, a connector is not needed, the time is saved, the process is simplified, the space of the cell stack is reduced, the power density within unit volume is improved, and relatively high electrical performance and the long-terminal stability of the cell stack are also ensured.

Description

technical field [0001] The invention belongs to the technical field of solid oxide fuel cell stacks, and in particular relates to a method for preparing solid oxide fuel cell stacks supported by anodes without connectors by 3D printing. Background technique [0002] With the continuous improvement of the global economic aggregate, the traditional way of burning fossil fuels to provide power has caused enormous pressure on the environment, and the solid oxide fuel cell (SOFC) is a kind of energy that can avoid the combustion process and is not subject to the Carnot cycle. The equipment that directly converts the chemical energy in the fuel into electrical energy due to limitations can be combined with a gas turbine to generate electricity. The power generation efficiency is as high as 70%, and the waste heat quality is high. If the waste heat is used rationally, the thermal efficiency can reach more than 80%. SOFC has the advantages of high efficiency and low emission, and is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0236H01M8/0252H01M8/0256H01M8/0273H01M8/2404H01M8/2432H01M8/2465H01M8/2483H01M4/90H01M4/88H01M8/1246H01M8/1253H01M8/126
CPCH01M4/8846H01M4/9025H01M4/9033H01M8/0236H01M8/0252H01M8/0256H01M8/0273H01M8/1246H01M8/1253H01M8/126H01M8/1266H01M8/2404H01M8/2432H01M8/2465H01M8/2483Y02E60/50Y02P70/50B28B1/001B33Y10/00B33Y80/00C22C29/00H01M2008/1293H01M2300/0077H01M2300/0074H01M8/2435H01M8/2457
Inventor 张津津于方永杨乃涛魏鲁阳孟秀霞孟波刘少敏
Owner SHANDONG UNIV OF TECH
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