Evaluation of pulsed laser deposited SrNb0.1Co0.9O3−δ thin films as promising cathodes for intermediate-temperature solid oxide fuel cells

A Broad Stability Investigation of Nb-Doped SrCoO2.5+δas a Reversible Oxygen Electrode for Intermediate-Temperature Solid Oxide Fuel Cells

“…Table I compares R P values obtained by this study with the literature. [21][22][23][36][37][38][39][40][41][42] Overall, R P values of this study are at the same order of magnitude with the literature, but not the lowest, particularly at lower temperatures. The differences such as in particles size, microstructures and type of electrolyte could contribute to the differences observed.…”

“…• C. [19][20][21][22][23][24] More interestingly, this material also exhibits a reversible oxygen redox activity at low temperature range, making it a promising ORR and OER electrode for IT-RSOFCs.…”

Thermal and Electrical Stability of Sr0.9Y0.1CoO2.5+δas a Promising Cathode for Intermediate-Temperature Solid Oxide Fuel Cells

“…An effective retention method demonstrated so far is to chemically dope a higher oxidation-state cation on either A-or B-site, [11][12][13][14][15][16] commonly known as donor doping. A number of donor cations have been tried on the B-site, including Sb 5+ , [17][18][19] Nb 5+ , [20][21][22][23][24] Sc 3+25, 26 and Ti 4+ , 27,28 . The introduction of additional oxygen into the parent lattice of SrCoO 3-δ by the high oxidation-state oxides compensates the loss of oxygen at higher temperatures, thus stabilizing the Co-O bond and cubic structure necessary for active ORR catalysis.…”

ChemInform Abstract: Recent Development on Perovskite‐type Cathode Materials Based on SrCoO3‐δ. Parent Oxide for Intermediate‐Temperature Solid Oxide Fuel Cells

“…Incorporating up to 20 mol% of these TMs into SC is proved beneficial for SC structural stability by other researchers. [48,86,[97][98][99][100][101][102][103][104][105][106][107][108] Moreover, some oxyanions such as phosphate, sulfate and silicate can also have some beneficial effect on stabilizing the cubic structure of SC. [93,109,110] For some of these dopants such as Sc 3+ , Mo 6+ , Sb 5 + and Ta 5+ , the crystal structure of SC at room temperature may be influenced by their substitution level [100,101,104,111] : Tetragonal structure (P4/mmm) is obtained if the doping content lower than 10 mol%; higher doping level will lead to the cubic perovskite structure.…”