TY - GEN
T1 - Synthesis of sr2mgmoo6 by atmosphere-controlled calcination method and characterization for solid oxide fuel cells
AU - Kinoshita, Masahiro
AU - Hara, Kyota
AU - Onozawa, Tomohiro
AU - Shin-Mura, Kiyoto
AU - Otani, Yu
AU - Ogawa, Seiya
AU - Niwa, Eiki
AU - Hashimoto, Takuya
AU - Sasaki, Kazuya
N1 - Funding Information:
The present research was financed by Study Grant and the JSPS KAKENHI Grant Number 15K06691.
Publisher Copyright:
© 2017 by The American Ceramic Society.
PY - 2017
Y1 - 2017
N2 - Sr2MgMoO6 is a B-site ordered double perovskite and a mixed ionic and electronic conductor in a reducing atmosphere at the anode. Owing to its high tolerance to carbon deposition and sulfur poisoning, it has been under investigation as a promising anode material for hydrocarbon-fueled solid oxide fuel cells. The powder synthesis process reported in previous studies is confusing and requires the use of expensive chemicals. In this study, a simple solid-state reaction method to synthesize high-purity Sr2MgMoO6 powder, based on conventional chemicals, is investigated. SrCO3 or Sr(NO3)2, MgO, and MoO3 were used as starting materials. Atmosphere-controlled calcinations using 5% H2/Ar and O2 as flow gases were alternatively performed at the proper sintering temperature (1000 and 1100°C). The successfully synthesized powder comprises a high-purity Sr2MgMoO6 phase. The reaction process was determined by analyzing the X-ray diffraction data at room and high temperatures. Crystal stability at high temperature in the reducing atmosphere was also evaluated; Sr2MgMoO6 is stable in 5% H2/Ar reducing atmosphere even at temperatures as high as 1300°C.
AB - Sr2MgMoO6 is a B-site ordered double perovskite and a mixed ionic and electronic conductor in a reducing atmosphere at the anode. Owing to its high tolerance to carbon deposition and sulfur poisoning, it has been under investigation as a promising anode material for hydrocarbon-fueled solid oxide fuel cells. The powder synthesis process reported in previous studies is confusing and requires the use of expensive chemicals. In this study, a simple solid-state reaction method to synthesize high-purity Sr2MgMoO6 powder, based on conventional chemicals, is investigated. SrCO3 or Sr(NO3)2, MgO, and MoO3 were used as starting materials. Atmosphere-controlled calcinations using 5% H2/Ar and O2 as flow gases were alternatively performed at the proper sintering temperature (1000 and 1100°C). The successfully synthesized powder comprises a high-purity Sr2MgMoO6 phase. The reaction process was determined by analyzing the X-ray diffraction data at room and high temperatures. Crystal stability at high temperature in the reducing atmosphere was also evaluated; Sr2MgMoO6 is stable in 5% H2/Ar reducing atmosphere even at temperatures as high as 1300°C.
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M3 - Conference contribution
AN - SCOPUS:85044280614
SN - 9781119040439
T3 - Ceramic Engineering and Science Proceedings
SP - 87
EP - 97
BT - Advances in Solid Oxide Fuel Cells and Electronic Ceramics II - A Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, ICACC 2016
A2 - Shimamura, Kiyoshi
A2 - Kusnezoff, Mihails
A2 - Bansal, Narottam P.
PB - American Ceramic Society
T2 - 13th International Symposium on Solid Oxide Fuel Cells: Materials, Science, and Technology and Crystalline Materials for Electrical, Optical and Medical Applications Symposium, SOFC 2016 - 40th International Conference on Advanced Ceramics and Composites, ICACC 2016
Y2 - 24 January 2016 through 29 January 2016
ER -