Characterization of La0.5Sr0.5Co0.5Ti0.5O3−δ as symmetrical electrode material for intermediate-temperature solid-oxide fuel cells

Evaluation of La0.3Sr0.7Ti1−xCoxO3 as a potential cathode material for solid oxide fuel cells

“…It shows good catalytic activity towards oxygen reduction in the cathode side and hydrogen oxidation in the anode side, and keeps good structural stability in both oxidizing and reducing atmospheres. 19 La-doped SrTiO 3 has been reported as a potential anode material for SOFCs due to its high electronic conductivity in reducing atmospheres and good chemical and structural stability upon redox cycling. [20][21][22][23] Substituting Ti with Co for La 0.3 Sr 0.7 TiO 3 (LST) could improve the oxygen ionic conductivity.…”

“…The stable oxidation state of Ti ions in air ensures good structural stability and a lower TEC value for LST. As symmetrical electrode materials, La 0.5 Sr 0.5 Co 0.5 Ti 0.5 O 3 , 19 La 0.4 Sr 0.6 Ti 1Ày Co y O 3Àd (ref. 25) and La 2Àx Sr x CoTiO 6 , 26 have been investigated recently.…”

Progress and Prospects in Symmetrical Solid Oxide Fuel Cells with Two Identical Electrodes

“…[ 110,111 ] It was found that the structure of LSTF evolved from cubic to orthorhombic symmetries with increasing irondoping content, and this transformation accompanied an increase in electrical conductivity. [ 114 ] The oxidized LSCT had an orthorhombic perovskite structure with a Pbnm space group, but the reduced LSCT displayed a different structure of cubic perovskite having a space group of Pm-3m . Napolitano et al, meanwhile applied Co as a B-site dopant to create La 0.4 Sr 0.6 Ti 1y Co y O 3+ δ structures as potential electrode materials.…”

“…However, no fuel cell performance data were obtained in their investigation. Martínez‐Coronado and co‐workers specifically investigated La 0.5 Sr 0.5 Co 0.5 Ti 0.5 O 3‐ δ (LSCT) as an electrode material of symmetrical SOFCs with La 0.8 Sr 0.2 Ga 0.83 Mg 0.17 O 3‐ δ (LSGM) as an electrolyte and LDC as a buffer layer . The oxidized LSCT had an orthorhombic perovskite structure with a Pbnm space group, but the reduced LSCT displayed a different structure of cubic perovskite having a space group of Pm‐3m .…”

Synthesis and Evaluation of Ca-doped Sr2Fe1.5Mo0.5O6-δ as Symmetrical Electrodes for High Performance Solid Oxide Fuel Cells

“…Doping Fe or Co in the B-site substantially improved their conductivities under oxidizing atmospheres. La 4 Sr 8 Ti 6 Fe 6 O 38-δ [12] and La 0.5 Sr 0.5 Ti 0.5 Co 0.5 O 3-δ (LSTC) [13] were explored as symmetrical electrodes with maximum power densities of 110 mW•cm -2 obtained at 800 ℃ for symmetrical cells-LSTC|LSGM|LSTC [13] . Alternatively, introducing the chemically stable metal element Mo in the B-site of commonly used SOFC cathodes could also enhance their structural stability under highly reducing anode atmospheres, e.g., SrFe 0.75 Mo 0.25 O 3-δ (SFMO) [14] .…”