A composite oxygen-reduction electrode composed of SrSc 0.2Co0.8O3-d perovskite and Sm 0.2Ce0.8O1.9 for an intermediate-temperature solid-oxide fuel cell
MetadataShow full item record
SSC (70 wt.% SrSc0.2Co0.8O3-d)-SDC (30 wt.% Sm0.2Ce0.8O1.9) composite was evaluated as cathode for intermediate-temperature solid-oxide fuel cells. The effect of firing temperature on the chemical interaction between SSC and SDC was characterized by oxygen-temperature programmed desorption (O2-TPD) techniques. Certain type of phase reactions occurred between SSC and SDC at calcination temperatures higher than 950 °C. The conductivity of the composite was measured by a four-prober direct current technique. The electro-catalytic activity of the composite electrode for oxygen reduction was measured by electrochemical impedance spectroscopy (EIS) in a symmetric cell configuration. The electrode fired at 950 °C showed the best performance. By applying the SSC + SDC-composite electrode, a cell with a ~20-µm thick SDC electrolyte delivered a peak power density of 760 mW cm-2 at 600 °C. This suggested that an SSC + SDC-composite electrode may be a promising cathode for intermediate-temperature solid-oxide fuel cells. © 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
Showing items related by title, author, creator and subject.
A double-layer composite electrode based on SrSc0.2Co0.8O3-d perovskite with improved performance in intermediate temperature solid oxide fuel cellsAn, B.; Guo, Y.; Ran, R.; Shao, Zongping (2010)Dual-layer composite electrodes consisting of a layer adjoining to an Sm0.2Ce0.8O1.9 (SDC) electrolyte composed of 70 wt.% SrSc0.2Co0.8O3-d + 30 wt.% Sm0.2Ce0.8O1.9 (SScC + SDC composite) and a second layer composed of ...
Highly active and stable Er0.4Bi1.6O3 decorated La0.76Sr0.19MnO3+δ nanostructured oxygen electrodes for reversible solid oxide cellsAi, N.; Li, N.; He, S.; Cheng, Y.; Saunders, M.; Chen, K.; Zhang, T.; Jiang, San Ping (2017)Bismuth based oxides have excellent ionic conductivity and fast oxygen surface kinetics and show promising potential as highly active electrode materials in solid oxide cells (SOCs) such as solid oxide fuel cells (SOFCs) ...
Assessment of PrBaCo<inf>2</inf>O<inf>5+d</inf> + Sm <inf>0.2</inf>Ce<inf>0.8</inf>O<inf>1.9</inf> composites prepared by physical mixing as electrodes of solid oxide fuel cellsChen, D.; Ran, R.; Shao, Zongping (2010)The performance of PrBaCo2O5+d + Sm 0.2Ce0.8O1.9 (PrBC + SDC) composites as electrodes of intermediate-temperature solid oxide fuel cells is investigated. The effects of SDC content on the performance and properties of ...