Surface decorated La0.43Ca0.37Ni0.06Ti0.94O3−d as an anode functional layer for solid oxide fuel cell applications

Surface decorated La 0.43 Ca 0.37 Ni 0.06 Ti 0.94 O 3− d (LCNT) perovskite oxide was investigated as an anode functional layer (AFL) for anode-supported solid oxide fuel cells (SOFCs). The surface exsolved Ni nano particles on LCNT scaffold enlarged electrochemically active triple phase boundaries (...

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Bibliographic Details
Published in:The Korean journal of chemical engineering 2020, 37(8), 245, pp.1440-1444
Main Authors: Jeong, HyeonGwon, Kim, Doyeub, Sharma, Bharat, Noh, Jong Hyeok, Lee, Kang Taek, Myung, Jae-ha
Format: Article
Language:English
Subjects:
Anodes
Biotechnology
Catalysis
Chemistry
Chemistry and Materials Science
Electrical resistivity
Electrode polarization
Electrolytic cells
High temperature
Industrial Chemistry/Chemical Engineering
Materials Science
Maximum power density
Nanoparticles
Perovskites
Solid oxide fuel cells
Yttria-stabilized zirconia
화학공학
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Summary:Surface decorated La 0.43 Ca 0.37 Ni 0.06 Ti 0.94 O 3− d (LCNT) perovskite oxide was investigated as an anode functional layer (AFL) for anode-supported solid oxide fuel cells (SOFCs). The surface exsolved Ni nano particles on LCNT scaffold enlarged electrochemically active triple phase boundaries (TPBs) without any agglomeration and mechanical failure. The Ni particles with 60 nm in diameter were homogeneously exsolved from LCNT perovskite. The Ni-YSZ anode supported cell with LCNT anode functional layer (AFL) exhibited a maximum power density of 0.94 W/cm 2 , similar to that of the conventional Ni-YSZ AFL cell at 900 °C. The activation polarization resistance of the LCNT AFL cell was effectively reduced compared to that of the Ni-YSZ AFL cell, though it had higher Ohmic resistance due to thicker YSZ electrolyte and lower electrical conductivity. Our study suggests the potential use of LCNT with exsolved nano particles as an active and durable AFL for high-temperature SOFCs.
ISSN:0256-1115
1975-7220
DOI:10.1007/s11814-020-0623-1