Oh, Eun-Ok Whang, Chin-Myung Lee, Yu-Ri Lee, Jong-Heun Yoon, Kyung Joong Kim, Byung-Kook Son, Ji-Won Lee, Jong-Ho Lee, Hae-Weon 2024-01-20T14:32:19Z 2024-01-20T14:32:19Z 2021-09-04 2012-07 0955-2219 https://pubs.kist.re.kr/handle/201004/129127 A 500 nm thick thin film YSZ (yttria-stabilized zirconia) electrolyte was successfully fabricated on a conventionally processed anode substrate by spin coating of chemical solution containing slow-sintering YSZ nanoparticles with the particle size of 20 nm and subsequent sintering at 1100 degrees C. Incorporation of YSZ nanoparticles was effective for suppressing the differential densification of ultrafine precursor powder by mitigating the prevailing bi-axial constraining stress of the rigid substrate with numerous local multi-axial stress fields around them. In particular, adding 5 vol% YSZ nanoparticles resulted in a dense and uniform thin film electrolyte with narrow grain size distribution, and fine residual pores in isolated state. The thin film YSZ electrolyte placed on a rigid anode substrate with the GDC (gadolinia-doped ceria) and LSC (La0.6Sr0.4CoO3-delta) layers deposited by PLD (pulsed laser deposition) processes revealed that it had fairly good gas tightness relevant to a SOFC (solid oxide fuel cell) electrolyte and maintained its structural integrity during fabrication and operation processes. In fact, the open circuit voltage was 1.07 V and maximum power density was 425 mW/cm(2) at 600 degrees C, which demonstrates that the chemical solution route can be a viable means for reducing electrolyte thickness for low- to intermediate-temperature SOFCs. (C) 2012 Elsevier Ltd. All rights reserved. English ELSEVIER SCI LTD PERFORMANCE MICROSTRUCTURE FABRICATION INTERLAYER THICKNESS STRESSES CATHODE LAYERS DENSE Thin film yttria-stabilized zirconia electrolyte for intermediate-temperature solid oxide fuel cells (IT-SOFCs) by chemical solution deposition Article 10.1016/j.jeurceramsoc.2012.01.021 1 JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, v.32, no.8, pp.1733 - 1741 JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 32 8 1733 1741 scie scopus 000303279600028 2-s2.0-84863371901 Materials Science, Ceramics Materials Science Article PERFORMANCE MICROSTRUCTURE FABRICATION INTERLAYER THICKNESS STRESSES CATHODE LAYERS DENSE Sol-gel processes Microstructure Fuel cells Y2O3-ZrO2 Constrain sintering