Park, Jung Hoon Han, Seung Min Yoon, Kyung Joong Kim, Hyoungchul Hong, Jongsup Kim, Byung-Kook Lee, Jong-Ho Son, Ji-Won 2024-01-20T04:03:42Z 2024-01-20T04:03:42Z 2021-09-05 2016-05-31 0378-7753 https://pubs.kist.re.kr/handle/201004/124044 The impact of a nanostructured Ni-yttria-stabilized zirconia (Ni-YSZ) anode on low-temperature solid oxide fuel cell (LT-SOFC) performance is investigated. By modifying processing techniques for the anode support, anode-supported SOFCs based on thin-film (similar to 1 mu m) electrolytes (TF-SOFCs) with and without the nanostructured Ni-YSZ (grain size similar to 100 nm) anode are fabricated and a direct comparison of the TF-SOFCs to reveal the role of the nanostructured anode at low temperature is made. The cell performance of the nanostructured Ni-YSZ anode significantly increases as compared to that of the cell without it, especially at low temperatures (500 degrees C). The electrochemical analyses confirm that increasing the triple-phase boundary (TPB) density near the electrolyte and anode interface by the particle-size reduction of the anode increases the number of sites available for charge transfer. Thus, the nanostructured anode not only secures the structural integrity of the thin-film components over it, it is also essential for lowering the operating temperature of the TF-SOFC. Although it is widely considered that the cathode is the main factor that determines the performance of LT-SOFCs, this study directly proves that anode performance also significantly affects the low-temperature performance. (C) 2016 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV PULSED-LASER DEPOSITION LA0.6SR0.4COO3-DELTA-CE0.9GD0.1O2-DELTA NANO-COMPOSITE NI-YSZ COMPOSITE REACTION-MECHANISM SOFC MICROSTRUCTURE ELECTROLYTE CATHODES CHALLENGES STABILITY Impact of nanostructured anode on low-temperature performance of thin-film-based anode-supported solid oxide fuel cells Article 10.1016/j.jpowsour.2016.03.055 1 JOURNAL OF POWER SOURCES, v.315, pp.324 - 330 JOURNAL OF POWER SOURCES 315 324 330 scie scopus 000374810700038 2-s2.0-84961687442 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article PULSED-LASER DEPOSITION LA0.6SR0.4COO3-DELTA-CE0.9GD0.1O2-DELTA NANO-COMPOSITE NI-YSZ COMPOSITE REACTION-MECHANISM SOFC MICROSTRUCTURE ELECTROLYTE CATHODES CHALLENGES STABILITY Thin-film-based SOFC Nanostructured anode Ni-YSZ Grain-size effect Electrode reaction mechanism