Premium
Novel Design of Microchanneled Tubular Solid Oxide Fuel Cells and Synthesis Using a Multipass Extrusion Process
Author(s) -
Lee ByongTaek,
Esfakur Rahman A. H. M.,
Kim JongHee
Publication year - 2007
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2007.01582.x
Subject(s) - cathode , materials science , electrolyte , anode , extrusion , microstructure , solid oxide fuel cell , yttria stabilized zirconia , sintering , non blocking i/o , oxide , cubic zirconia , chemical engineering , porosity , composite material , metallurgy , chemistry , ceramic , electrode , biochemistry , engineering , catalysis
A novel, microchanneled tubular solid oxide fuel cell was fabricated using a multipass extrusion process, with an outside diameter of 2.7 mm that contained 61 cells. Cell materials used in this work were 8 mol% yttria‐stabilized zirconia (8YSZ), La 0.8 Sr 0.2 MnO 3 (LSM), and NiO–8YSZ (50:50 vol%) as electrolyte, cathode, and anode, respectively. Three stages of heat‐treatment processes were applied, at 700°C in N 2 condition, at 1000°C in air, and then sintered at 1300°C for 2 h, respectively. The X‐ray diffraction analysis confirmed that no reaction phases appeared after sintering. The microstructures of anode and cathode were fairly porous while the electrolyte had a dense microstructure (relative density >96%). The thickness of electrolyte, anode, and cathode were 20, 30, and 40 μm, respectively, and the diameter of the continuous channels was 150 μm.