The formation of secondary phases in the porous electrodes is a severe mechanism affecting the lifetime of solid oxide fuel cells (SOFC). It can occur via various chemical mechanisms and it has a significant influence on cell performance due to pore clogging and deactivation of active surfaces and triple-phase boundary (TPB). We present a modeling and simulation study of nickel oxide formation ...

High-temperature electrolysis using solid oxide cells (SOECs) is an innovative technology to temporarily store unused electrical energy from renewable sources. However, they show continuous performance loss during long-term operation, which the main issue preventing their widespread use. In this work, we have performed stability tests up 1000 h under steam and co-electrolysis conditions commerc...

Colossal ionic conductivity was recently discovered in YSZ/SrTiO3 multilayers and was explained in terms of strainand interface-enhanced disorder of the O sublattice. In the present paper we use a combination of scanning transmission electron microscopy and electron energy loss spectroscopy (EELS) and theoretical EELS simulations to confirm the presence of a disordered YSZ O sublattice in coher...