Investigation of micro-tube solid oxide fuel cell fabrication using extrusion method
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Date
2016
Journal Title
Journal ISSN
Volume Title
Publisher
Pergamon-Elsevier Science Ltd
Access Rights
info:eu-repo/semantics/closedAccess
Abstract
Extrusion is one of the most effective and inexpensive methods used in the production of ceramic tubes for tubular or micro-tubular solid oxide fuel cell (SOFC) applications. In this method, the parameters such as the viscosity of the ceramic slurry, the extrusion speed and the die temperature need to be optimized for a high performance. In this study, anode supported micro-tubular solid oxide fuel cells are successfully fabricated via a specially designed vertical-type piston extruder machine. The die design enables the production of micro-tubular SOFCs with outer diameters from 3 to 4.5 mm. The die temperature is determined to be the most important process parameter and the suitable die temperature is ranging 40-70 degrees C depending on the slurry content. The electrolyte layer is coated on the anode support tube by vacuum assist dip coating technique and co-sintering is applied with a home-made porous sintering apparatus to avoid dimensional anomalies. The effects of the parameters such as the composition of the electrolyte solution, the vacuum pressure and the immersion time on the electrolyte thickness are investigated. It is found that the electrolyte thickness decreases when the immersion time and vacuum pressure are reduced. Moreover, the thickness of the electrolyte is found to be depended on the content of the electrolyte solution. The effect of the pre-sintering temperature on the electrolyte quality is also investigated. The sintering temperatures of 1000 degrees C and 1100 degrees C provide a similar and desired electrolyte microstructure. A peak power density of 140 mW cm(-2) is obtained at 700 degrees C from the final cell. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Description
1st International Symposium on Materials for Energy Storage and Conversion (ESC-IS) -- SEP 07-09, 2015 -- Middle E Tech Univ, Ankara, TURKEY
Timurkutluk, Bora/0000-0001-6916-7720
WOS: 000378359400040
Timurkutluk, Bora/0000-0001-6916-7720
WOS: 000378359400040
Keywords
Micro tubular solid oxide fuel cell, Extrusion method, Die design, Dip coating technique
Journal or Series
International Journal Of Hydrogen Energy
WoS Q Value
Q1
Scopus Q Value
Q1
Volume
41
Issue
23
