Sc and Ta-doped SrCoO3-δ perovskite as a high-performance cathode for solid oxide fuel cells

Building Ruddlesden–Popper and Single Perovskite Nanocomposites: A New Strategy to Develop High‐Performance Cathode for Protonic Ceramic Fuel Cells

“…[ 27–31 ] However, in general, the cobalt‐based perovskite oxides have large TEC, and the rich cobalt in the perovskites may suppress proton conduction. [ 32,33 ] Consequently, the cobalt‐based perovskite oxides usually display insufficient activity for PCFCs. [ 34,35 ] The Ruddlesden–Popper (RP) perovskite oxides, which are layered structure with alternative perovskite layer and metal oxides, have received considerable attention in recent years.…”

Investigation of Structural and Thermal Evolution in Novel Layered Perovskite NdSrMn2O5+δ via Neutron Powder Diffraction and Thermogravimetric Analysis

“…e volume of this NdSrMn 2 O 5+ δ material is not so large without any longrange ordering in B-site which indicates an oxygen-deficient layered perovskite oxide. During TGA-DSC, when the heating starts, the weight loss was mainly observed from 200 to 950 °C on account of increasing oxygen deficiency and thermally stable [55] due to its minimal amount of weight loss. Also, similar rare-earth layered perovskite has already given a promising result with the same space group for IT- SOFC [56].…”

Analysis of H2O-induced surface degradation in SrCoO3-derivatives and its impact on redox kinetics

“…At a relatively low temperature the tetragonal SrCoO 3-d presents a high peak electronic conductivity value, significantly greater than the unsubstituted high-temperature cubic phase (280 S•cm -1 at 400 °C and 150 S•cm -1 at 925 °C respectively). 7,11 Stabilising the tetragonal or cubic SrCoO 3-d phase has been experimentally demonstrated through substituting either the B-site [12][13][14][15][16][17][18][19][20][21][22][23] or the A-site [24][25][26][27][28][29] of the SCO perovskite respectively. The high catalytic activity suggests the substituted SCO phases are ideal cathodes for IT-SOFC.…”

“…To reduce the experimental uncertainty, both pieces were exchanged at the same time in the same exchange tube. After pre-annealing in pure 16 O 2 atmosphere, the samples were heated at 400 ⁰C for 10 min in 200 mbar of 18 O 2 enriched gas atmosphere (90% enriched). By Time-Of-Flight-Secondary-Ion-Mass Spectrometry (TOF-SIMS) the 18 O isotope-diffusion concentration profile was measured.…”