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Low-temperature preparation of BaCeO3 through ultrasonic-assisted precipitation for application in solid oxide electrolysis cell
Kim-Lohsoontorn P. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Low-temperature preparation of BaCeO3 through ultrasonic-assisted precipitation for application in solid oxide electrolysis cell
ผู้แต่ง / หัวหน้าโครงการ (EN): Kim-Lohsoontorn P.
บทคัดย่อ (EN): Barium cerate (BaCeO3) was synthesized using conventional precipitation and ultrasonic-assisted precipitation. The effect of precipitation parameters (precipitation precursor, precipitation agent, agent concentration and temperature) significantly affected %perovskite formation and crystallite size of the product. Precipitation with 1 M (NH4)2C2O4 induced the formation of a single-phase BaCeO3 while precipitation with 5-20 M NaOH provided a mixed phase of BaCeO3 and CeO2. The %perovskite increased as increasing precipitation temperature; however, the crystallite size of the product also increased. Increasing ultrasonic intensity (30 and 150 W cm-2) during precipitation was found to increase the %perovskite and to reduce crystallite size. The precipitation with 1 M (NH4)2C2O4 agent, using ultrasonic intensity at 150 W cm-2, provided single phase BaCeO3 with crystallite size of 18.4 nm after calcination at 900 °C for 4 h. The electrochemical performance of the BaCeO3 cell under steam electrolysis condition (controlled voltage from OCV to 1.5 V; 20% H2O, 40% H2, and 40% N2) was measured (600-800 °C) and the activation energy of conduction was calculated to be 0.78 eV. © 2015 Elsevier B.V.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://www.scopus.com/inward/record.uri?eid=2-s2.0-84947865302&doi=10.1016%2fj.cej.2015.01.053&partnerID=40&md5=a718d9d03862961d71c0c7b5f22d5c87
เผยแพร่โดย (EN): มหาวิทยาลัยมหิดล
คำสำคัญ (EN): Crystallite size
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยมหิดล
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Low-temperature preparation of BaCeO3 through ultrasonic-assisted precipitation for application in solid oxide electrolysis cell
Kim-Lohsoontorn P.
มหาวิทยาลัยมหิดล
ไม่ระบุวันที่เผยแพร่
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