Effect of Ca2+ and Zn2+ cations substitution on the properties of La0.85Sr0.15CrO3 as SOFC interconnect

Effect of Sm3+ and Sr2+ dopants on the FT-IR, photoluminescence and surface texture of lanthanum chromite nanoparticles

“…LaCrO 3 (LC)-based compounds with the perovskite structure (ABO 3 ) are the most promising materials as interconnect for solid oxide fuel cell (SOFCs) owing to their refractory nature, corrosion resistance and the possibility of doping to promote electronic conductivity [1,2]. They are also of interest for electrode applications in magneto-hydrodynamic (MHD) generator channels and as heating elements in high temperature furnace [3,4].…”

“…Pure LaCrO 3 exhibits orthorhombic symmetry at room temperature and transforms to rhombohedral symmetry at 255 • C [3]. However, the doping of a metal cation in La-and/or Crsites of LaCrO 3 arrests the structures' transformation depending on the conditions of preparation [4][5][6]1,2,[7][8][9][10]. It was reported that undoped LaCrO 3 has a p-type semiconductor nature and their electrical conductivity is essentially due to the 3-d band of the Cr 3+ ions through the formation of cation vacancies [8].…”

Synthesis and Characterization of a Spinel Type Cr-Free Ceramic Interconnect Material for SOFCs

“…LaCrO 3 -based perovskite materials were widely used for ceramic interconnects because of their high electrical conductivity, high thermal conductivity and good phase stability under reducing atmosphere as well as air (4,5). However, LaCrO 3 causes volatile Cr(VI) species, which can segregate at triple-phase boundaries of the cathode, leading to an increase in cathodic polarization (6)(7)(8).…”