Three-dimensional hexagonal GDC interlayer for area enhancement of low-temperature solid oxide fuel cells
作者： Jiwoong Bae , Dohaeng Lee , Soonwook Hong , Hwichul Yang , Young-Beom Kim
DOI: 10.1016/J.SURFCOAT.2015.07.066
关键词: Oxide 、 Nanosphere lithography 、 Dielectric spectroscopy 、 Nanotechnology 、 Electrode 、 Yttria-stabilized zirconia 、 Materials science 、 Nanostructure 、 Solid oxide fuel cell 、 Chemical engineering 、 Gadolinium-doped ceria
摘要: Abstract A three-dimensional hexagonal gadolinium-doped ceria (GDC) interlayer is fabricated to enhance the cathodic surface area of low-temperature solid oxide fuel cells (LT-SOFCs). By using modified nanosphere lithography method, 3-D nanostructure successfully fabricated. As a result nanostructuring, GDC has 70% increase in area. Electrochemical impedance spectroscopy reveals 2-fold decrease electrode resistance compared with plane cell, resulting current–voltage behavior 60% higher peak power density. The superior reaction attributed large (~ 1.7 times larger) due interlayer. This novel fabrication method can be applied almost all kinds LT-SOFC structures, including large-scale and substrate-supported platforms, thereby it will contribute commercializing LT-SOFCs.
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