...Masashi Mori; Kaoru Nakamura; Takanori Itoh The crystal structure, phase relationship and sintering characteristics of (Sr 0.7 La 0.3 ) 1−x TiO 3+δ perovskites (0 ≤ x ≤ 0.12) have been studied using the Pechini method. High-temperature neutron diffraction analysis showed that (Sr 0.7 La 0.3 )TiO 3...

... electrolyte with a thin electrolyte layer of 6μm composed of the synthesized 1Ce10ScSZ powders was fabricated using the tape-casting and co-sintering techniques for a solid oxide fuel cell (SOFC) single cell. The open-circuit voltage of the single cell thus obtained was 1.11 V at 750 °C, indicating the dense...

...K. Asano; Y. Kozawa; Y. Mugikura; T. Watanabe The formation of dense thin films to obtain an intermediate temperature solid oxide fuel cell (IT-SOFC) that uses Ba(Ce 1−x Zr x ) 0.9 Y 0.1 O 3−α (BCZYO, x = 0, 0.3, 1) as the proton conductor was attempted on a dense Pd substrate at low sintering...

...K. Park; H. K. Hwang High-quality nanosized Ce 0.8 Sm 0.2-x Dy x O 1.9 (0 ≤ x ≤ 0.15) powders were successfully synthesized by solution combustion method. Calcined Ce 0.8 Sm 0.2−x Dy x O 1.9 (0 ≤ x ≤ 0.15) powders and sintered Ce 0.8 Sm 0.2−x Dy x O 1.9 (0 ≤ x ≤ 0.15) pellets crystallized...

...Zhenwei Wang; Masashi Mori The air-sintering characteristics and electrical conductivity of (Sr 1−x La x )TiO 3 perovskites (0 ≤ x ≤ 0.3) synthesized by the citric acid method were evaluated in terms of their use as interconnect materials in solid oxide fuel cells. A single perovskite phase of (Sr...

... and tested in the conditions of humidified hydrogen for anode and oxygen for cathode. The anode-supported single cell with the LSCF cathode sintered at 700°C showed high electrical performance with the maximum power density of 771 mW cm −2 at 600°C. The results show that the synthesized LSCF nanopowders...

...Masashi Mori; Zhenwei Wang; Takanori Itoh; Shintarou Yabui; Kei-ichiro Murai; Toshihiro Moriga The A-Site and B-Site non-stoichiometry and sintering characteristics of (Sr 1− x La x ) 1− y Ti 1− z O 3 perovskites were studied using samples prepared by solid-state mixing. A-Site or B-Site deficiency...

... ≤ x ≤ 0.2, it was observed for SrTi 0.8 Co 0.2 O 3 that Co element agglomerated at the grain boundary during sintering. The dense SrTi 0.8 Co 0.2 O 3 sample was destroyed and included Sr 2 TiO 4 as a secondary phase after reducing treatment at 1000 °C. As a result of Co doping, the linear thermal...

... and sintered GCO buffer layers are imperfect and ultimately reduce the overall performance. This study concentrates on the evaluation of nanoscaled GCO thin films integrated into anode supported cells (ASC). GCO thin films were deposited on 8YSZ electrolyte by a low temperature metal organic deposition (MOD...

... chemical route. These prepared materials showed good thermal stability up to around 900 ° C by TG/DTA analyses. Introduction of optimum quantity of bismuth as a sintering aid into the samples contributed to enhance the densification of microstructure, which is essential for the utilization of proton...

...Masashi Mori; Zhenwei Wang; Takanori Itoh Ce 0.9 Gd 0.1 O 1.95 (CGO) and ( ZrO 2 ) 0.89 ( Sc 2 O 3 ) 0.1 ( CeO 2 ) 0.01 (ScSZ) have been proposed as possible alternative electrolytes in intermediate-temperature solid oxide fuel cells (SOFCs). In this study, the mechanisms of densely sintering Co...

... 0.2 O 3 − δ , and La 2 Ni 0.6 Cu 0.4 O 4 has been investigated. As reference, electrochemical data from cells with La 0.58 Sr 0.4 Co 0.2 Fe 0.8 O 3 − δ cathodes were taken into account. The cathode layers were sintered at various temperatures. After testing, cross-sectional analyses were made in order...

... of the cathode reaction at the general operation condition of SOFCs. Metal-supported single cell SOFCs with LSCM-8246 cathode were fabricated and characterized. The single cell impedance was much greater than values expected from the half cell test because the cathode in the single cell was sintered in situ...

.... The aim of this work was to find the optimum conditions to prepare the spinel coating regarding to Cr vaporization. By using such a coating, the Cr vaporization rate was found to be two orders of magnitude lower than uncoated steel. The sintering temperature and pretreatment of the sample showed a high...

... of synthesized LSGM and LSCM powders has been investigated, and it validates that there is no reaction between LSGM and LSCM at sintering temperature. The characterization study of the synthesized LSGM also indicates that sintering at 1500 ° C gives higher electrical conductivity compared with the currently...

...Sergey Yarmolenko; Jag Sankar; Nicholas Bernier; Michael Klimov; Jay Kapat; Nina Orlovskaya The phase composition and sintering behavior of two commercially available 10 mol % Sc 2 O 3 – 1 mol % Ce O 2 – Zr O 2 ceramics produced by Daiichi Kigenso Kagaku Kogyo (DKKK) and Praxair have been studied...

... in the sintering rates. The influence of the temperature for anode presintering—a key processing step—on the curvature of the half-cells induced by sintering was investigated over 700 – 1400 ° C . It was found that the maximum curvature occurred for an anode presintered at 900 ° C , while the minimum was observed...

... at 1200 ° C . Compared with that fabricated by the conventional two-step cofiring process, the cell showed an improved performance due to the increased anode sintering temperature, which leads to an improved anode∕electrolyte interfacial property. The cell having 2 cm tube length fed with humidified 30...

... per volume, which enables one to realize SOFC systems applicable to portable devices and auxiliary power units for automobile. In this study, the fabrication method of the microtubular SOFCs was examined. Shrinkage behavior and the microstructure of electrolyte/anode as a function of sintering...

...S. Higgins; N. M. Sammes; A. Smirnova; J. A. Kilner; G. Tompsett A modified Pechini process has been used to synthesize perovskite-structured yttrium-doped barium zirconate of the form BaZr 0.85 Y 0.15 O 3 - δ (BZY15). The X-ray diffraction pattern for the sintered material ( 5 h at 1500 ° C...