SOFCs use yttria-stabilized cubic zirconia (YSZ) and other oxygen ion conductors as solid electrolytes. However, the drastic drop in ionic conductivity at the interfaces between the countless ...

a, Logarithm of the long-range ionic conductivity (in S cm −1) of the trilayers STO/YSZ/STO versus inverse temperature.The thickness range of the YSZ layer is 1–62 nm. Also included are the ...