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Unraveling Crystal Structure and Transport Properties of Fast Ion Conducting SrCo Nb O 0.9
0.1
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Chung-Yul Yoo, Jong Hyun Park, Dae Sik Yun, Young A Lee, Kyong Sik Yun, June Hyuk Lee, Hana Yoon, Jong Hoon Joo, and Ji Haeng Yu J. Phys. Chem. C, Just Accepted Manuscript • DOI: 10.1021/acs.jpcc.6b07615 • Publication Date (Web): 08 Sep 2016 Downloaded from http://pubs.acs.org on September 13, 2016
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The Journal of Physical Chemistry
Unraveling Crystal Structure and Transport Properties of Fast Ion Conducting SrCo0.9Nb0.1O3-δ
Chung-Yul Yoo1,*, Jong Hyun Park1, Dae Sik Yun1, Young A Lee1, Kyong Sik Yun1, June Hyuk Lee2,*, Hana Yoon1, Jong Hoon Joo3, Ji Haeng Yu1
1
Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon, 34129, Republic of Korea 2
Korea Atomic Energy Research Institute, 111 Daedeok-daero 989 beon-gil, Daejeon, 34057, Republic of Korea
3
Department of Advanced Material Engineering, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, Chungbuk 28644, Republic of Korea
RECEIVED DATE (to be automatically inserted after your manuscript is accepted if required according to the journal that you are submitting your paper to) *
Correspondence: Tel.: +82 42 8603083 ; Fax: +82 42 8603133; Email address:
[email protected] (C.-Y.
Yoo),
[email protected] (J. H. Lee).
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The Journal of Physical Chemistry
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Abstract. SrCo0.9Nb0.1O3-δ (SCN) has been investigated for oxygen transport membrane and solid oxide fuel cell applications as it is more stable than the state-of-the-art Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) material. Here, the crystal structure and transport properties of SCN were systematically investigated. Combined neutron and high-temperature X-ray powder diffraction analyses over the temperature range of 25–800 °C showed that the crystal structure of SCN belongs to the tetragonal space group P4/mmm with the unit cell ac × ac × 2ac, where ac is the lattice parameter of the cubic perovskite at temperatures
