Low-temperature co-sintering technique for the fabrication ofmulti-layer functional ceramics for solid oxide fuel cells

Title
Low-temperature co-sintering technique for the fabrication ofmulti-layer functional ceramics for solid oxide fuel cells
Authors
석찬문주호박만수홍종섭김형철손지원이종호김병국이해원윤경중
Keywords
Co-sintering; Densification; Camber; Residual stress; Solid oxide fuel cell
Issue Date
2016-05
Publisher
Journal of the European Ceramic Society
Citation
VOL 36, NO 6, 1417-1425
Abstract
The low-temperature co-sintering technique for the fabrication of the multi-layered electrolyte supported on a planar anode substrate is demonstrated for solid oxide fuel cells (SOFCs). A NiO/gadolinia-doped ceria (GDC) anode substrate is fabricated using tape casting and lamination processes, and yttria-stabilized zirconia (YSZ) bottom electrolyte and GDC top electrolyte layers are sequentially screen-printed, followed by co-sintering at 1230 °C. The electrolyte layers are successfully densified at an extremely low processing temperature by promoting the sinterability of the individual components, and a continuously graded electrolyte structure is constructed to suppress the delamination of the electrolyte films. Based on the camber analysis, the cell structure is optimized to minimize the structural distortion and eliminate the processing defects. The low-temperature co-sintering technique presented in this study is expected to widen the material selection and resolve the compatibility issues associated with high-temperature processing for the fabrication of SOFCs.
URI
http://pubs.kist.re.kr/handle/201004/58645
ISSN
09552219
Appears in Collections:
KIST Publication > Article
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