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Synthesis of SmBaCo2O6-δ powder by the combustion process using Co3O4 as precursor

Journal Article


Abstract


  • A double perovskite phase SmBaCo2O6-δ powder was successfully synthesized by the citric acid-nitrate gel combustion process after calcining at 900 °C for 4 h, using undissolved and relatively inexpensive Co3O4 as a starting material for the first time. TGA-DTA and XRD results revealed the formation mechanism of the double perovskite phase. The BaCoO3-δ was generated firstly, then the formation of Ba-doped SmCoO3-δ occurred, and finally Sm3+ and Ba2+ were distributed orderly, obtaining SmBaCo2O6-δ with a double perovskite phase. SEM analysis indicated that Co3O4 might play as a "template" in the synthesis process of SmBaCo2O6-δ via this special method. The conductivity of SmBaCo2O6-δ was still higher than 200 S cm-1 at 850 °C, which is adequate as a cathode material for Solid Oxide Fuel Cells (SOFCs). © 2009 Elsevier B.V. All rights reserved.

Publication Date


  • 2009

Citation


  • Sun, W., Bi, L., Yan, L., Peng, R., & Liu, W. (2009). Synthesis of SmBaCo2O6-δ powder by the combustion process using Co3O4 as precursor. Journal of Alloys and Compounds, 481(1-2). doi:10.1016/j.jallcom.2009.03.150

Scopus Eid


  • 2-s2.0-67649295512

Volume


  • 481

Issue


  • 1-2

Abstract


  • A double perovskite phase SmBaCo2O6-δ powder was successfully synthesized by the citric acid-nitrate gel combustion process after calcining at 900 °C for 4 h, using undissolved and relatively inexpensive Co3O4 as a starting material for the first time. TGA-DTA and XRD results revealed the formation mechanism of the double perovskite phase. The BaCoO3-δ was generated firstly, then the formation of Ba-doped SmCoO3-δ occurred, and finally Sm3+ and Ba2+ were distributed orderly, obtaining SmBaCo2O6-δ with a double perovskite phase. SEM analysis indicated that Co3O4 might play as a "template" in the synthesis process of SmBaCo2O6-δ via this special method. The conductivity of SmBaCo2O6-δ was still higher than 200 S cm-1 at 850 °C, which is adequate as a cathode material for Solid Oxide Fuel Cells (SOFCs). © 2009 Elsevier B.V. All rights reserved.

Publication Date


  • 2009

Citation


  • Sun, W., Bi, L., Yan, L., Peng, R., & Liu, W. (2009). Synthesis of SmBaCo2O6-δ powder by the combustion process using Co3O4 as precursor. Journal of Alloys and Compounds, 481(1-2). doi:10.1016/j.jallcom.2009.03.150

Scopus Eid


  • 2-s2.0-67649295512

Volume


  • 481

Issue


  • 1-2