Enhancement of Conductivity in Ceria-Carbonate Nanocomposites for LTSOFCs

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This work first explores high resolution transmission electron microscopy (TEM) to determine the interfacial regions and provide experimental evidences for interfaces between the SDC and carbonate constituent phases of the SD-carbonate two-phase composites to further investigate the superionic conduction mechanism in the ceria-carbonate composite systems and enhancement of conductivity. Schober first reported interfacial superionic conduction in ceria-based composites but without direct experimental proofs. Such superionic conduction mechanism remains unknown. Especially, in the nano-scale, this region is trifle to be detected.

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Pages:

197-203

DOI:

10.4028/www.scientific.net/JNanoR.6.197

Citation:

R. Raze et al., "Enhancement of Conductivity in Ceria-Carbonate Nanocomposites for LTSOFCs", Journal of Nano Research, Vol. 6, pp. 197-203, 2009

Online since:

June 2009

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$35.00

[1] Steele BCH, Heinzel A, Materials for fuel-cell technologies. Nature 2001; 414: 345-352.

[2] Huijsmans JPP, Berkel FPF van, Christie GM, Intermediate temperature SOFC - a promise for the 21st century. J. Power Sources 1998; 71: 107-110.

DOI: 10.1016/s0378-7753(97)02789-4

[3] C. Milliken, S. Elangovan, Ashok C. Khandkar, Proc. - Electrochem. Soc. 94-12 (Ionic and Mixed Conducting Ceramics) 1994, p.466.

[4] M. Godickemeier, L. J. Gauckler, Engineering of Solid Oxide fuel cells with ceria based electrolytes, J. Electrochem. Soc. 145 (1998) 414-421.

DOI: 10.1149/1.1838279

[5] Sangtae k and J Maier, Partial electronic and ionic conduction in nanocrystalline ceria: role of space charge, J Eur. Ceramic Soc. 24(2004), 1919-(1923).

DOI: 10.1016/s0955-2219(03)00525-9

[6] B. Zhu, C. R. Xia, X. G. Luo, G. Niklasson, Thin Solid Films, 385 (2001) p.209.

[7] B. Zhu, B. -E. Mellander, in Solid Oxide FCs-VI (Eds. S.C. Singhal et al. ) The Electrochemical Soc., Pennington, New York 1999, p.244.

[8] C. Milliken, S. Guruswamy, A. Khandkar, J. Electrochem. Soc. 146 (1999) 872.

[9] Zhu B, Functional ceria-salt-composite materials for advanced ITSOFC applications. J. Power Sources 2003; 114: 1-9.

DOI: 10.1016/s0378-7753(02)00592-x

[10] B. Zhu, X. T. Yang, J. Xu, Z. G. Zhu, S. J. Ji, M. T. Sun and J.C. Sun, Innovative low temperature and sofc and advanced materials, J. Power Sources 118 (2003) 47-53.

DOI: 10.1016/s0378-7753(03)00060-0

[11] Zhu B, Liu XR, Zhou P, Yang XT, Zhu ZG, Zhu W, Innovative solid carbonate-ceria composite electrolyte fuel cells. Electrochem Commune 2001; 3: 566-571.

DOI: 10.1016/s1464-2859(02)80005-0

[12] Huang JB, Yang LZ, Gao RF, Mao ZQ, Wang C, A high-performance ceramic fuel cell with samarium doped ceria-carbonate composite electrolyte at low temperatures. Electrochem Commune 2006; 8: 785-789.

DOI: 10.1016/j.elecom.2006.03.016

[13] Jianbing Huang, Zongqiang Mao, Zhixiang Liu and Cheng Wang, Electrochem. Communication. 9 (2007) 2601.

[14] J.B. Huang et al, Performance of fuel cells with proton-conducting ceria-based composite electrolyte and nickel-based electrodes, J Power Sources, 2008; 175: 238-243.

DOI: 10.1016/j.jpowsour.2007.09.018

[15] Schober T, Composites of Ceramic High-Temperature Proton Conductors with Inorganic Compounds. Electrochem. & Solid State Lett. 2005; 8: A199-200.

DOI: 10.1149/1.1865592

[16] Zhu B, Li S, Mellander BE, Theoretical approach on ceria-based two-phase electrolytes for low temperature (300-600ºC) solid oxide fuel cells, Electrochem Commune 2008; 10: 302- 305.

DOI: 10.1016/j.elecom.2007.11.037

[17] Schober T, Ringel H, Proton Conducting Ceramics: Recent Advances. Ionics 2004; 10: 391- 395.

DOI: 10.1007/bf02377999

[18] Zhu B, Liu XR, Schober T, Novel hybrid conductors based on doped ceria and BCY20 for ITSOFC applications. Electrochem Commune 2004; 6: 378-383.

DOI: 10.1016/j.elecom.2004.01.015

[19] Xiaodi W. Ying Ma, Rizwan R. Mamoun M. Bin Z., Novel core shell SDC/Amorphous Na2Co3 nanocomposite electrolyte for low temperature SOFC, Electrochem Commune 2008; 10: 1617-1620.

DOI: 10.1016/j.elecom.2008.08.023

[20] Pei Chen su et al. Solid Oxide Fuel Cell with corrugated Thin film Electrolyte, Nano Lett, Vol. 8, No. 8, 2008, 2289-2292.

DOI: 10.1021/nl800977z

[21] Kenji K, et al. Structural and Morphological Characterization of Cerium Oxide Nanocrystals Prepared by Hydrothermal Synthesis, Nano Lett, Vol. 7, No. 2, 2007, 421-425.

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