Suppression of Ni Agglomeration in PLD Fabricated Ni-YSZ Composite for Surface Modification of SOFC Anode

Title
Suppression of Ni Agglomeration in PLD Fabricated Ni-YSZ Composite for Surface Modification of SOFC Anode
Authors
노호성손지원이헌지호일이종호이해원
Keywords
SOFC; Nano-Structure Anode; PLD; Films; Microstructure-final; Nano-composites; ZrO2; Fuel cells
Issue Date
2010-11
Publisher
Journal of the European Ceramic Society
Citation
VOL 30, NO 16, 3415-3423
Abstract
The suppression of Ni agglomeration in Ni-yttria stabilized zirconia (Ni-YSZ) nano-composite thin films deposited by pulsed laser deposition (PLD) has been investigated by varying post-annealing temperatures at a range of 800–1200 °C. Grain growth to a certain extent appears to be necessary to obtain a stable Ni-YSZ composite microstructure by suppressing massive Ni agglomeration. The microstructurally stable and uniform nano-porous Ni-YSZ thin film was obtained by 1200 °C post-annealing and reduction of the NiO–YSZ thin film, and it was applied as the surface modification layer of the bulk anode support used in conventional solid oxide fuel cells (SOFCs). By this approach, we were able to successfully realize a thin film electrolyte SOFC exhibiting the open cell voltage (OCV) higher than 1 V with a 1-μm thick film electrolyte on the porous anode support.
URI
http://pubs.kist.re.kr/handle/201004/37858
ISSN
0955-2219
Appears in Collections:
KIST Publication > Article
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