引用本文:
Wei ZHOU, Zong Ping SHAO, Wan Qin JIN. A Novel Route to Synthesize Nano-crystalline Ba0.5Sr0.5Co0.8Fe0.2O3-δ Perovskite Oxide at High Temperature[J]. Chinese Chemical Letters,
2006, 17(10): 1353-1356.
Citation: Wei ZHOU, Zong Ping SHAO, Wan Qin JIN. A Novel Route to Synthesize Nano-crystalline Ba0.5Sr0.5Co0.8Fe0.2O3-δ Perovskite Oxide at High Temperature[J]. Chinese Chemical Letters, 2006, 17(10): 1353-1356.
Citation: Wei ZHOU, Zong Ping SHAO, Wan Qin JIN. A Novel Route to Synthesize Nano-crystalline Ba0.5Sr0.5Co0.8Fe0.2O3-δ Perovskite Oxide at High Temperature[J]. Chinese Chemical Letters, 2006, 17(10): 1353-1356.
A Novel Route to Synthesize Nano-crystalline Ba0.5Sr0.5Co0.8Fe0.2O3-δ Perovskite Oxide at High Temperature
摘要:
It is normally difficult to prepare nano-sized Ba0.5Sr0.5Co0.8Fe0.2O3-δ(BSCF) oxide at high temperature due to its high surface activity. The complexing process, which has successfully applied in the synthesis of nano Sm0.15Ce0.85O1.925 with crystallite size down to 5 nm1, just resulted in a coarse BSCF with crystallite size of 41.9 nm at 900℃. We applied a novel process by simply modifying the solid precursor from the complexing process with concentrated nitric acid treatment.The obtained BSCF powder had a crystallite size of ~25 nm even calcined at 1000℃. The small crystallite size is extremely promising to enhance the electrochemical performance of cathode for solid oxide fuel cell dramatically.
English
A Novel Route to Synthesize Nano-crystalline Ba0.5Sr0.5Co0.8Fe0.2O3-δ Perovskite Oxide at High Temperature
Abstract:
It is normally difficult to prepare nano-sized Ba0.5Sr0.5Co0.8Fe0.2O3-δ(BSCF) oxide at high temperature due to its high surface activity. The complexing process, which has successfully applied in the synthesis of nano Sm0.15Ce0.85O1.925 with crystallite size down to 5 nm1, just resulted in a coarse BSCF with crystallite size of 41.9 nm at 900℃. We applied a novel process by simply modifying the solid precursor from the complexing process with concentrated nitric acid treatment.The obtained BSCF powder had a crystallite size of ~25 nm even calcined at 1000℃. The small crystallite size is extremely promising to enhance the electrochemical performance of cathode for solid oxide fuel cell dramatically.
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Key words:
- Nano-crystallite
- / perovskite
- / solid oxide fuel cells
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