Coking resistant Ni–La0.8Sr0.2FeO3 composite anode improves the stability of syngas-fueled SOFC

Selective Partial Oxidation of Methane with CO2 Using Mobile Lattice Oxygens of LSF

“…The La­(OH) 3 phase is thermally unstable at a testing temperature of 900 °C, decomposing by dehydration to La 2 O 3 oxide at T > 490 °C. , Detection of La­(OH) 3 in the spent material instead of La 2 O 3 may be explained by the very high hydrophilicity of La 2 O 3 that, being stored under dry nitrogen after discharging, quickly reacted with humid air during XRD measurements. The formation of SrLaFeO 4 (with a K 2 NiF 4 type structure) in the reduced catalyst was also reported in other studies, ,, indicating that part of the LSF decomposed to tetragonal SrLaFeO 4 with a significant change in the metal cation contents from Sr 0.2 La 0.8 FeO 3 to Sr 0.1 La 0.1 FeO 4. We found that this reductive transformation of LSF perovskite to a trimetallic mixed oxide SrLaFeO 4 phase significantly depleted with La, and a La-oxide phase, also yielded a monometallic Fe (0) phase.…”

Evaluation of LaxSr1−xZnyFe1−yO3−δ(x= 0.54, 0.8,y= 0.2, 0.4) as a promising cobalt free composite cathode for SOFCs

“…It is due to migration of oxygen ions and fast transfer of electrons through the interface of particles. 29,30 The maximum conductivity achieved was 8.12 S cm À1 , 7.12 S cm À1 and 6.62 S cm À1 at 600 1C for LaSrZnFeO1, LaSrZnFeO2 and LaSrZnFeO3, respectively. The conductivity of the prepared samples decreased after 600 1C.…”

Nanotechnologies in ceramic electrochemical cells

“…Yao et al reported a Ni–La 0.8 Sr 0.2 FeO 3− δ (LSF) composite that could be used for generation of a Ni–Fe nanoalloy. 218 In this work, the authors combined impregnation and exsolution processes together. The average sizes of the as-prepared Ni–Fe NPs were controlled at 20–50 nm.…”