2017
DOI: 10.4028/www.scientific.net/msf.888.47
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Effects of Milling Speed and Calcination Temperature on the Phase Stability of Ba<sub>0.5</sub>Sr<sub>0.5</sub>Co<sub>0.8</sub>Fe<sub>3-δ</sub>

Abstract: The phase instability of Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) is widely reported in atmospheres containing carbon dioxide, which affects the long term electrochemical performance. The aim of this study is to investigate the phase stability of BSCF under the influence of milling and calcination temperature. Commercial BSCF powder was milled at 200 and 500 rpm and subsequently calcined at 750, 800 and 900 °C. The BSCF samples were characterized by using X-ray diffraction (XRD), fourier transform infrared spectroscopy… Show more

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Cited by 5 publications
(5 citation statements)
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“…The peaks observed for the composite powder calcined at 1150 °C correspond to strontium iron oxide, Sr 2 FeO 4 (JCPDS No: 42-0480). These finding phases are same with the previous result of wet milling sample which is has surface carbonates phases that form during the calcination process[11].…”
supporting
confidence: 91%
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“…The peaks observed for the composite powder calcined at 1150 °C correspond to strontium iron oxide, Sr 2 FeO 4 (JCPDS No: 42-0480). These finding phases are same with the previous result of wet milling sample which is has surface carbonates phases that form during the calcination process[11].…”
supporting
confidence: 91%
“…Furthermore, the composite powder calcined at 1050 °C and 1100 °C forms secondary peaks that are rarely found, namely, strontium iron, Sr4Fe6O12 (JCPDS No: 82-3765), and strontium iron cobalt oxide, Sr4Fe2 (Fe2.4Co1.6) O12.96 (JCPDS No: 88-0130). The secondary phases may form because of the heating state generated during the high-energy ball milling [11]. Secondary-phase peaks are clearly formed, and many peaks are generated when the composite powder is calcined at high temperature.…”
Section: Resultsmentioning
confidence: 99%
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“…After 800 o C, the weight loss back to approximate original weight it was the temperature where secondary metal carbonate was removed. Moreover, the weight loss after 800 o C also indicated the starting crystalline phase recovery of BSCF as reported in previous study no matter it was heating in conventional method or in microwave [13]. This was investigated that BSCF cathode composites were appropriate utilized in low and intermediate temperature application.…”
Section: Methodsmentioning
confidence: 68%
“…This observation will promote an enlargement on surface area of SSC based composite cathode powders within a shorter processing time. The increased surface area indicates good porosity behaviour and remarkable the expansion of TPB area which subsequently magnify the cell performance of SSC-SDCC composite cathode [16,17,18]. demonstrations all major elements such as sodium, cobalt, samarium, cerium and strontium were distributed in good manner.…”
Section: Fig 1 Eds Spectrum Of Ssc-ce55 Composite Cathode Powdermentioning
confidence: 86%