Synthesis of Sm0.5Sr0.5CoO3‐X and La0.6Sr0.4CoO3‐X Nanopowders by Solution Combustion Process - Progress in Nanotechnology - Wiley Online Library

Nanopowders of Sm₀.₅Sr₀.₅CoO₃-_x (SSC) and La_0.6Sr_0.4Co0_3-x (LSC) compositions, which are being investigated as cathode materials for intermediate temperature solid oxide fuel cells, were synthesized by a solution-combustion method using metal nitrates and glycine as fuel. Development of crystalline phases in the as-synthesized powders after heat treatments at various temperatures was monitored by x-ray diffraction. Perovskite phase in LSC formed more readily than in SSC. Single phase perovskites were obtained after heat treatment of the combustion synthesized LSC and SSC powders at 1000 °C and 1200 °C, respectively. The as-synthesized powders had an average particle size of ∼12 nm as determined from x-ray line broadening analysis using the Scherrer equation. Average grain size of the powders increased with increase in calcination temperature. Morphological analysis of the powders calcined at various temperatures was done by scanning electron microscopy.

References

N. Q. Minh, Ceramic Fuel Cells, J. Am. Ceram. Soc., 76[3], 563–588 (1993).
10.1111/j.1151-2916.1993.tb03645.x
CAS Web of Science® Google Scholar
D. Stover, H.P. Buchkremer, S. Uhlenbrock, Processing and Properties of the Ceramic Conductive Multilayer Device SOFC, Ceram. Int., 30 [7], 1107–1113 (2004).
10.1016/j.ceramint.2003.12.018
CAS Web of Science® Google Scholar
Y. Liu, S. Zha, M. Liu, Adv. Mater., 16 [3], 256–260 (2004).
10.1002/adma.200305767
CAS Web of Science® Google Scholar
S.-J. Kim, W. Lee, W.-J. Lee, S. D. Park, J. S. Song, and E. G. Lee, Preparation of Nanocrystalline Nickel Oxide-Yttria-Stabilized Zirconia Composite Powder by Solution Combustion with Ignition of Glycine Fuel, J. Mater. Res., 16 [12], 3621–3627 (2001).
10.1557/JMR.2001.0496
CAS Web of Science® Google Scholar
L. A. Chick, L. R. Pederson, G. D. Maupin, J. L. Bates, L. E. Thomas, and G. J. Exarhos, Glycine-Nitrate Combustion Synthesis of Oxide Ceramic Powders, Mater. Lett., 10, 6–12 (1990).
10.1016/0167-577X(90)90003-5
CAS Web of Science® Google Scholar
M. Marinsek, K. Zupan, and J. Maeek, Ni-YSZ Cermet Anodes Prepared by Citrate/Nitrate Combustion Synthesis, J. Power Sources, 106, 178-188 (2002).
10.1016/S0378-7753(01)01056-4
CAS Web of Science® Google Scholar
T. Ishihara, M. Honda, T. Shibayama, H. Minami, H. Nishiguchi, Y. Takita, Intermediate Temperature SOFCs Using a New LaGaO₃ Based Oxide Ion Conductor. I. Doped SmCoO₃ as a New Cathode Material, J. Electrochem. Soc., 145 [9], 3177–3183 (1998).
10.1149/1.1838783
CAS Web of Science® Google Scholar
R. D. Purohit, S. Saha, and A. K. Tyagi, Nanocrystalline Thoria Powders via Glycine-Nitrate Combustion, J. Nuclear Mater., 288 [1], 7–10 (2001).
10.1016/S0022-3115(00)00717-0
CAS Web of Science® Google Scholar
T. Ye, Z. Guiwen, Z. Weiping, and X. Shangda, Combustion Synthesis and Photoluminescence of Nanocrystalline Y₂O₃: Eu Phosphors, Mater. Res. Bull., 32, 501 (1997).
10.1016/S0025-5408(97)00007-X
Web of Science® Google Scholar
K. Prabhakaran, J. Joseph, N. M. Gokhale, S. C. Sharma, and R. Lai, Sucrose Combustion Synthesis of La_xSr_(1-X)MnO₃ (x ≤ 0.2) Powders, Ceram. Int., 31 [2], 327–331 (2005).
10.1016/j.ceramint.2004.03.047
CAS Web of Science® Google Scholar
B. D. Cullity, Elements of X-Ray Diffraction, 2^nd Edition, Addison-Wesley, Reading, MA, p. 284(1978).
Google Scholar

Progress in Nanotechnology: Processing