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Received December 10, 2010
Accepted February 12, 2011
- This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Ce0.9Sr0.1Cr0.5Mn0.5O3-δ as the anode materials for solid oxide fuel cells running on H2 and H2S
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China 1Department of Environment Engineering, Nanjing Institute of Technology, Nanjing 211167, P. R. China
xiufangzhu@163.com
Korean Journal of Chemical Engineering, August 2011, 28(8), 1764-1769(6), 10.1007/s11814-011-0033-5
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Abstract
Perovskite-type Ce0.9Sr0.1Cr0.5Mn0.5O3-δ (CSCMn) was synthesized and evaluated as anode for solid oxygen fuel cells based on Ce0.8Sm0.2O1.9 (SDC). The conductivities of CSCMn were evaluated with DC four-probe method in 3% H2-N2 and 5% H2S-N2 at 450-700 ℃, respectively. The compositions of CSCMn powders were studied by XRD and thermodynamic calculations. Meanwhile, sintering temperatures affecting phases of CSCMn is also proposed with XRD, and the analysis is given with thermodynamic calculations. CSCMn exhibits good chemical compatibility with electrolyte (SDC) in N2. After exposure to 5% H2S-N2 for 5 h at 800 ℃, CSCMn crystal structures change and some sulfides are detected, as evidenced by XRD and Raman analyses. The electrochemical properties are measured for the cell comprising CSCMn- SDC/SDC/Ag in 5% H2S-N2 at 600 ℃ and in 3% H2-N2 at 450 and 500 ℃. The electrochemical_x000D_
impedance spectrum (EIS) is used to analyze ohm and polarization resistance of the cell at various temperatures.
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Norby T, Solid State Ion., 125(1-4), 1 (1999)
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Hennings U, Brune M, Reimert R, GWF Gas Erdas., 145, 92 (2004)
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Arnstein N, Experimental investigation of solid oxide fuel cells using biomass gasification producer gases, Norwegian University of Science and Technology, Trondheim, Norway (2005)
Aguilar L, Zha SW, Cheng Z, Winnick J, Liu ML, J. Power Sources, 135(1-2), 17 (2004)
Matsuzaki Y, Yasuda I, Solid State Ion., 132(3-4), 261 (2000)
Brightman E, Ivey DG, Brett DJL, Brandon NP, J. Power Sources., In press.
Danilovic N, Luo JL, Chuang KT, Sanger AR, J. Power Sources, 194(1), 252 (2009)
Danilovic N, Luo JL, Chuang KT, Sanger AR, J. Power Sources, 192(2), 247 (2009)
Wu WC, Huang JT, Chiba A, J. Power Sources, 195(18), 5868 (2010)
Zhu XF, Zhong Q, Zhao XJ, Yan H, Appl. Surf. Sci., 257, 1967 (2011)
Lohsoontorn P, Brett DJL, Brandon NP, J. Power Sources, 175(1), 60 (2008)
OUTOKUMPU, HSC Chemistry for Windows, Version 5.0, OUTOKUMPU
Kittel C, Introduction to Solid State Physics, 8th ed., Wiley, Berkley, CA (2005)
Weber WJ, Griffin CW, Bates L, J. Am. Ceram. Soc., 70(4), 265 (1987)
Gu HX, Zheng Y, Ran R, Shao ZP, Jin WQ, Xu NP, Ahn J, J. Power Sources, 183(2), 471 (2008)
McBride JR, Hass KC, Poindexter BD, Weber WH, J. Appl. Phys., 76, 2435 (1994)
Zunica M, Chevallier L, Radojkovic A, Brankovic G, Brankovic Z, Bartolomeo ED, J. Alloy. Compd., 509, 1157 (2011)
Im JM, You HJ, Yoon YS, Shin DW, Ceramics International., 34, 877 (2008)
Souza ECC, Muccillo ENS, J. Alloy. Compd., 473, 560 (2009)
Vanheuveln FH, Bouwmeester HJ, J. Electrochem. Soc., 144(1), 134 (1997)
Leng YJ, Chan SH, Khor KA, Jiang SP, Int. J. Hydrog. Energy., 29, 1025 (2004)
Lv SQ, Long GH, Ji Y, Meng XW, Zhao HY, Sun CC, J. Alloy. Compd.