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Porous metal support type micro-tube solid oxide fuel cell and preparation method thereof

A technology of solid oxides and fuel cells, applied in the direction of fuel cells, fuel cell shapes/forms, circuits, etc., can solve the problems of complex preparation process, high cost, poor mechanical strength, etc., and achieve simple preparation process, reliable performance, Effect of system cost reduction

Inactive Publication Date: 2018-09-11
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of high cost, poor mechanical strength and complicated preparation process in the current traditional ceramic support structure, and provide a porous metal-supported microtubular solid oxide fuel cell and its preparation method. The obtained battery contains the stainless steel microtube support layer, the mechanical properties of the prepared battery are improved, the interface properties with the anode are improved, and the substantial area for hydrogen oxidation reaction at the anode is increased, and the stainless steel microtube support has excellent Symmetrical structure, and therefore improves the performance of the fuel cell, the fuel cell has excellent anti-vibration and fast hot start performance

Method used

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specific Embodiment approach 1

[0031] Specific Embodiment 1: This embodiment describes a porous metal-supported microtubular solid oxide fuel cell. The solid oxide fuel cell is sequentially composed of a cylindrical stainless steel microtubular support layer 1 , an anode functional layer 2, an electrolyte layer 3 and a cathode functional layer 4; the diameter of the inner circumference of the stainless steel microtube support layer 1 is 1~2.6mm, and the wall thickness is 0.2~0.6mm, and the stainless steel microtube support layer 1 has a total Divided into 3 layers, the battery structure is as figure 1 shown.

specific Embodiment approach 2

[0032] Specific embodiment two: a method for preparing the porous metal-supported microtubular solid oxide fuel cell described in specific embodiment one, the method includes the following steps:

[0033] Step 1: Preparation of slurry

[0034] (1) Metal polymer slurry: in terms of weight percentage, the content of each component is: stainless steel metal powder 61.8%, polyphenylene ether sulfone (PESf) 6.2% is a high molecular polymer, as a binder, N- Methylpyrrolidone (NMP) 27.6%, alcohol 3.1%, polyvinylpyrrolidone (PVP) 1.3%, the preparation method is as follows: weigh the raw materials and place them in a ball mill jar, and use a planetary ball mill for continuous ball milling for 48 h at a milling speed of 720 r / min to ensure that the stainless steel metal powder is uniformly dispersed in the organic solvent to obtain a uniform and stable metal-polymer slurry. The metal-polymer slurry used in the experiment should have good stability and fluidity, and have a certain visco...

specific Embodiment approach 3

[0041] Specific embodiment three: the preparation method of the porous metal-supported microtubular solid oxide fuel cell described in specific embodiment two, in step one, the material of the stainless steel metal powder is 400 series stainless steel, 300 series stainless steel, nickel Iron alloys, NiCrAlY alloys, Hastelloy-X alloys, Crofer 22APU and ITM ferritic stainless steel alloys.

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Abstract

The invention discloses a porous metal support type micro-tube solid oxide fuel cell and a preparation method thereof, and belongs to the technical fields of new energy materials and electrochemistry.The preparation method comprises following steps: preparing slurry; preparing a stainless steel micro-tube support layer; and preparing a positive pole functional layer, an electrolyte layer, and a negative pole support layer on the stainless steel micro-tube support layer in sequence. The fuel cell has the advantages that stainless steel is taken as the support of the fuel cell, the positive pole functional layer and the electrolyte layer are prepared by a dip-coating technology, the negative pole support layer is prepared by a silk-screen printing technology, then layers are sintered and moulded by a co-sintering technology, the preparation technology is simple, the performance is reliable, and the cost is low. The technical process is simple, the technology does not need pricy equipment, cheap stainless steel is taken as the cell support, the system cost is greatly reduced, and the fuel cell is suitable for massive production.

Description

Technical field [0001] The invention belongs to the technical fields of new energy materials and electrochemistry, and specifically relates to a porous metal-supported microtubular solid oxide fuel cell and a preparation method thereof. Background technique [0002] The solid oxide fuel cell is an all-solid-state energy conversion device that directly converts fuel chemical energy into electrical energy through electrochemical reactions. The main components of a single cell include a dense electrolyte separator and porous anode and porous cathode on both sides. So far, yttria-stabilized zirconia (YSZ) is the most well-researched and practically used oxygen ion conductor solid electrolyte material. Correspondingly, the anode material is mostly Ni-YSZ cermet, while the cathode material is mostly La 1– x Sr x MnO 3 (LSM) and other perovskite structure oxide ceramics. During the operation of the battery, oxygen molecules are adsorbed on the surface of the porous cathode and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/00H01M8/1226
CPCH01M8/004H01M8/1226H01M2008/1293Y02E60/50Y02P70/50
Inventor 孙克宁孙承志张乃庆孔禹
Owner HARBIN INST OF TECH
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