A new family of Ce-doped SmFeO3 perovskite for application in symmetrical solid oxide fuel cells

Electrochemical and magnetic properties of electrospun SmFeO3 and SmCoO3 nanofibers

“…The XRD patterns of SmFeO 3 and SmCoO 3 NFs are shown in Figure 1. The diffraction pattern of SmFeO 3 is in good agreement with JCPDS card (39‐1490), signifying the orthorhombic perovskite structure with space group Pnma(62) 13,18 . However, the observation of two extremely weak diffraction peaks at 19.86° and 28.35° has been identified to Sm 2 O 3 according to JCPDS card (42‐1461), indicating the small trace of impurity in the crystal structure.…”

Effect of Zr addition on structure and electrical properties of SmFeO3 prepared by solid state reaction method

“…It was already reported that samarium oxide (Sm 2 O 3 ) is a good catalyst with high activation energy [18][19][20]. It was also confirmed that doping with Ni 3+ and Ce 3+ to SmFeO 3 resulted in a noticeable stability [21] with structure having orthorhombic symmetry with Pnma or Pbnm space groups [15,16,22,23]. The analyses of Sm 3+ doped materials [10] also showed that the conver-sion of the Sm 3+ to Sm 2+ species can happen at the same time as the oxidation.…”

“…It is obvious that addition of Zr increases level of porosity in the sintered samples. Hence, it is recommended that this material can be used for oxygen sensor and SOFCs electrode applications [37][38][39][40][41] depending on their electrochemical and electrical conductivity with a good chemical and thermal stability. Thus, based on the previous results, i.e.…”

A B-site doped perovskite ferrate as an efficient anode of a solid oxide fuel cell with in situ metal exsolution

“….6Sr0.4Fe0.9Mn0.1O3 42 , Sm0.95Ce0.05FeO3 43 and La0.2Sr0.8Fe0.55Ti0.45O3- 44 showed a conductivity of 1 Scm -1 , 0.3 Scm -1 and 0.03 Scm -1 , respectively at 800 o C under H2. For SrFeO3 with dominant Fe 4+ has also been selected as parent material for anode fabrication: Sr(Fe,Mo)O3 has been studied as the oxide anode material of an SOFC 45 and the conductivity is around 10 S cm -1 in H2 at 800 o C and this could be attributed to the Fe 3+ /Fe 2+ and Mo 6+ /Mo 5+ transition, and the conductivity can be greatly enhanced if the electron doping was performed via the substitution of La 3+ for Sr 2+ to modify the average valency of Fe and Mo cation 46 .…”

“…The substitution of H2 for 5% H2 will decrease the oxygen partial pressure, 2 , from 10 -21 to 10 -19.6 bar to induce more oxygen vacancies in the perovskite and also increase the fugacity of H2 to ease the adsorption and oxidation process of the fuel. 43,45,53 , LFNT showed higher Rp that could be related to the microstructures: we used ball-milled powders with larger particle sizes.…”