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http://dx.doi.org/10.4191/kcers.2014.51.4.283

Study of Electrical Conductivity of BaZr0.85-xPdxY0.15O3-δ/ Carbonates Composite Materials  

Park, Ka-Young (Department of Nanotechnology and Advanced Materials Engineering, Sejong University)
Baek, Seung-Seok (Department of Nanotechnology and Advanced Materials Engineering, Sejong University)
Park, Jun-Young (Department of Nanotechnology and Advanced Materials Engineering, Sejong University)
Publication Information
Journal of the Korean Ceramic Society / v.51, no.4, 2014 , pp. 283-288 More about this Journal
Abstract
PdO-doped $BaZr_{0.85}Y_{0.15}O_{3-\delta}$ (BZPY) proton conductors have been proposed as applicable for intermediate temperature electrolytes for protonic ceramic fuel cells (PCFCs) because the PdO doping is effective for improving the proton conductivity of $BaZr_{0.85}Y_{0.15}O_{3-\delta}$ (BZY) with high affinity for hydrogen. In order to further improve the conductivity of BZPY, two-phase composite electrolytes consisting of a BZPY and molten carbonate were designed. Dense BZPY-based composite electrolytes were fabricated after sintering at $670^{\circ}C$ for 4 h, since molten carbonates fill the grain boundary of the porous BZPY matrix. Furthermore, BZPY/$(Li-0.5Na)_2CO_3$ composites show a significantly enhanced protonic conductivity at intermediate temperatures. This may be because easy proton transport is possible through the interface of the carbonate and oxide phase.
Keywords
Protonic ceramic fuel cells; Carbonate; Palladium oxide; Composite electrolyte; Conductivity;
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1 Y. P. Fu, "Electrochemical Performance of $La_{0.9}Sr_{0.1}Cer_{0.8}Ni_{0.2}$O_{3-{\delta}}-Ce_{0.8}Sm_{0.2}O_{1.9}$ Composite Cathode for Solid Oxide Fuel Cells," Int. J. Hydrogen Energy, 36 [9] 5574-80 (2011).   DOI
2 H. Iwahara, T. Esaka, H. Uchida, and N. Maeda, "Proton Conduction in Sintered Oxides and Its Application to Steam Electrolysis for Hydrogen Production," Solid State Ionics, 3/4 359-63 (1981).   DOI   ScienceOn
3 H. Iwahara, T. Esaka, H. Uchida, and N. Maeda, "Studies on Solid Electrolysis Gas Cells with High-temperature-type Proton Conductor and Oxide Ion Conductor," Solid State Ionics, 11 109-15 (1983).   DOI   ScienceOn
4 K. Nomura and H. Kageyama, "Transport Properties of $Ba(Zr_{0.8}Y_{0.2}$)$O_{3-{\delta}}$ Perovskite," Solid State Ionics, 178 [7-10] 661-65 (2007).   DOI
5 L. Malavasi, C. A. J. Fisher, and M. S. Islam, "Oxide-ion and Proton Conducting Electrolyte Materials for Clean Energy Applications: Structural and Mechanistic Features," Chem. Soc. Rev., 39 [11] 4370-87 (2010).   DOI
6 K. D. Kreuer, "Proton-conducting Oxides," Annu. Rev. Mater. Res., 33 333-59 (2003).   DOI   ScienceOn
7 M. A. Azimova and S. McIntosh, "Transport Properties and Stability of Cobalt doped Proton Conducting Oxides," Solid State Ionics, 180 [2-3] 160-67 (2009).   DOI
8 E. D. Wachsman and K. T. Lee, "Lowering the Temperature of Solid Oxide Fuel Cells," Science, 334 [6058] 935-39 (2011).   DOI   ScienceOn
9 S. M. Haile, "Fuel Cell Materials and Components," Acta Mater., 51 [19] 5981-6000 (2003).   DOI   ScienceOn
10 B. C. H. Steele, "Appraisal of $Ce_{1-x}Gd_yO2_{-y/2}$ Electrolytes for IT-SOFC Operation at $500^{\circ}C$," Solid State Ionics, 129 [1-4] 95-110 (2000).   DOI   ScienceOn
11 J. G. Li, T. Ikegami, and T. Mori, "Low Temperature Processing of Dense Samarium-doped $CeO_2$ Ceramics: Sintering and Grain Growth Behaviors," Acta Mater., 52 [8] 2221-28 (2004).   DOI   ScienceOn
12 D. Han, Y. Nose, K. Shinoda, and T. Uda, "Site Selectivity of Dopants in $BaZr_{1-y}M_yO_{3-{\delta}}$ (M = Sc, Y, Sm, Eu, Dy) and Measurement of Their Water Contents and Conductivities," Solid State Ionics, 213 2-7 (2012).   DOI
13 S. Ricote and N. Bonanos, "Enhanced Sintering and Conductivity Study of Cobalt or Nickel doped Solid Solution of Barium Cerate and Zirconate," Solid State Ionics, 181 694-700 (2010).   DOI   ScienceOn
14 H. Iwahara, T. Yajima, T. Hibino, K. Ozaki, and H. Suzuki, "Protonic Conduction in Calcium, Strontium and Barium Zirconates," Solid State Ionics, 61 [1-3] 65-69 (1993).   DOI   ScienceOn
15 K. H. Ryu and S. M. Haile, "Chemical Stability and Proton Conductivity of Doped $BaCeO_3$-$BaZrO_3$ Solid Solutions," Solid State Ionics, 125 [1-4] 355-67 (1999).   DOI   ScienceOn
16 E. Fabbri, D. Pergolesi, S. Licoccia, and E. Traversa, "Does the Increase in Y-dopant Concentration Improve the Proton Conductivity of Ba$Zr_{1-x}$Yx$O_{3-{\delta}}$ Fuel Cell Electrolytes?," Solid State Ionics, 181 [21-22] 1043-51 (2010).   DOI
17 T. Schober and H. G. Bohn, "Water Vapor Solubility and Electrochemical Characterization of the High Temperature Proton Conductor $BaZr_{0.9}Y_{0.1}O_{2.95}$," Solid State Ionics, 127 [3-4] 351-360 (2000).   DOI
18 A. Magrez and T. Schober, "Preparation, Sintering, and Water Incorporation of Proton Conducting $Ba_{0.99}Zr_{0.8}Y_{0.2}O_{3-{\delta}}$: Comparison between Three Different Synthesis Techniques," Solid State Ionics, 175 [1-4] 585-88 (2004).   DOI   ScienceOn
19 B. Zhu, X. Liu, P. Zhou, X. Yang, Z. Zhu, and W. Zhu, "Innovative Solid Carbonate-ceria Composite Electrolyte Fuel Cells," Electrochem. Commun., 3 [10] 566-71 (2001).   DOI
20 M. Mizuhata, T. Ohashi, and A. B. Beleke, "Electrical Conductivity and Related Properties of Molten Carbonates Coexisting with Ceria-based Oxide Powder for Hybrid Electrolyte," Int. J. Hydrogen Eng., 37 [24] 19407-16 (2012).   DOI
21 S. Tao and J. T. S. Irvine, "Conductivity Studies of Dense Yttrium-doped $BaZrO_3$ Sintered at $1325^{\circ}C$," J. Solid Sate Chem., 180 [12] 3493-503 (2007).   DOI   ScienceOn
22 D. Gao and R. Guo, "Structural and Electrochemical Properties of Yttrium-doped Barium Zirconate by Addition of CuO," J. Alloys Comp., 493 [1-2] 288-93 (2010).   DOI
23 J. S. Park, J. H. Lee, H. W. Lee, and B. K. Kim, "Low Temperature Sintering of $BaZrO_3$-based Proton Conductors for Intermediate Temperature Solid Oxide Fuel Cells," Solid State Ionics, 181 [3-4] 163-67 (2010).   DOI
24 S. S. Beak, K. Y. Park, T. H. Lee, N. Lee, Y. Seo, S. J. Song, and J. Y. Park, "PdO-doped $BaZr_{0.8}Y_{0.2}O_3$-${\delta}$ Electrolyte for Intermediate-temperature Protonic Ceramic Fuel Cells," Acta Mater., 66 273-83 (2014).   DOI
25 M. Benamira, A. Ringuede, V. Albin, R. N. Vannier, L. Hildebrandt, C. Lagereren, and M. Cassir, "Gadolinia-doped Ceria Mixed with Alkali Carbonates for Solid Oxide Fuel Cell Applications: I. A Thermal, Structural and Morphological Insight," J. Power Sources, 196 [13] 5546-54 (2011).   DOI
26 R. Huck, U. Bottger, D. Kohl, and G. Heiland, "Spillover Effects in the Detection of $H_2$ and $CH_4$ by Sputtered $SnO_2$ Films with Pd and PdO Deposits," Sens. Actuators, 17 [3-4] 355-59 (1989).   DOI
27 S. Shawuti and M. A. Gulgun, "Solid Oxide-molten carbonate Nano-composite Fuel Cells: Particle Size Effect," J. Power Sources, 267 128-35 (2014).   DOI
28 X. Wang, Y. Ma, and B. Zhu, "State of the Art Ceria-carbonate Composites (3C) Electrolyte for Advanced Low Temperature Ceramic Fuel Cells (LTCFCs)," Int. J. Hydrogen Eng., 37 [24] 19417-25 (2012).   DOI
29 L. Fan, M. Chen, C. Wang, and Bin Zhu, "$Pr_2NiO_4$-Ag Composite Cathode for Low Temperature Solid Oxide Fuel Cells with Ceria-carbonate Composite Electrolyte," Int. J. Hydrogen Eng., 37 [24] 19388-94 (2012).   DOI
30 K. Y. Park, T. H. Lee, J. T. Kim, N. Lee, Y. Seo, S. J. Song, and J. Y. Park. "Highly Conductive Barium Zirconate-based Carbonate Composite Electrolytes for Intermediate Temperature-protonic Ceramic Fuel Cells," J. Alloys Comp., 585 103-10 (2014).   DOI
31 X. Wang, Y. Ma, S. Li, A.-H. Kashyout, B. Zhu, and M. Muhammed, "Ceria-based Nanocomposite with Simultaneous Proton and Oxygen Ion Conductivity for Low-temperature Solid Oxide Fuel Cells," J. Power Sources, 196 2754-58 (2011).   DOI