Relevant bibliographies by topics / Oxide ion conductor

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Oxide ion conductor'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 February 2022

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Journal articles on the topic "Oxide ion conductor"

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Thangadurai, V., A. K. Shukla, and J. Gopalakrishnan. "La0.9Sr0.1Ga0.8Mn0.2O2.85: a new oxide ion conductor." Chemical Communications, no. 23 (1998): 2647–48. http://dx.doi.org/10.1039/a807529h.

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Xia, Tian, Jia-Yan Li, Qin Li, Xiang-Dong Liu, Jian Meng, and Xue-Qiang Cao. "A New Oxide Ion Conductor: La3GaMo2O12." Chinese Journal of Chemistry 24, no. 8 (2006): 993–96. http://dx.doi.org/10.1002/cjoc.200690206.

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Sinclair, Derek C., Craig J. Watson, R. Alan Howie, et al. "NaBi3V2O10: a new oxide ion conductor." Journal of Materials Chemistry 8, no. 2 (1998): 281–82. http://dx.doi.org/10.1039/a707760b.

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Heise, Martin, Bertold Rasche, Anna Isaeva, et al. "A Metallic Room‐Temperature Oxide Ion Conductor." Angewandte Chemie International Edition 53, no. 28 (2014): 7344–48. http://dx.doi.org/10.1002/anie.201402244.

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Shimura, T., G. Egusa, H. Iwahara, K. Katahira, and K. Yamamoto. "Electrochemical properties of junction between protonic conductor and oxide ion conductor." Solid State Ionics 97, no. 1-4 (1997): 477–82. http://dx.doi.org/10.1016/s0167-2738(97)00030-1.

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Scarfe, Darren P., Sai Bhavaraju, and Allan J. Jacobson. "Iodine intercalation in the oxide-ion conductor BaBi8O13." Chemical Communications, no. 3 (1997): 313–14. http://dx.doi.org/10.1039/a606263f.

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Sinha, Amit, B. P. Sharma, and P. Gopalan. "Development of novel perovskite based oxide ion conductor." Electrochimica Acta 51, no. 7 (2006): 1184–93. http://dx.doi.org/10.1016/j.electacta.2005.06.009.

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Wei, Tao, Preetam Singh, Yunhui Gong, John B. Goodenough, Yunhui Huang, and Kevin Huang. "Sr3−3xNa3xSi3O9−1.5x (x = 0.45) as a superior solid oxide-ion electrolyte for intermediate temperature-solid oxide fuel cells." Energy Environ. Sci. 7, no. 5 (2014): 1680–84. http://dx.doi.org/10.1039/c3ee43730b.

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A new solid oxide-ion conductor Sr3−3xNa3xSi3O9−1.5x (x = 0.45) exhibits the highest oxide-ion conductivity with the lowest activation energy among all the known chemically stable oxide-ion conductors.
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Lu, Geyu, Norio Miura, and Noboru Yamazoe. "Mixed Potential Hydrogen Sensor Combining Oxide Ion Conductor with Oxide Electrode." Journal of The Electrochemical Society 143, no. 7 (1996): L154—L155. http://dx.doi.org/10.1149/1.1836959.

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Sammes, N. M. "Raman Spectroscopy of the Fast Oxide-Ion Conductor Bismuth Lead Oxide." ECS Proceedings Volumes 1995-1, no. 1 (1995): 353–62. http://dx.doi.org/10.1149/199501.0353pv.

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Dissertations / Theses on the topic "Oxide ion conductor"

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Zhang, Yaoqing. "Exploring novel functionalities in oxide ion conductors with excess oxygen." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/2576.

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Functional materials, particularly metal oxides, have been the focus of much attention in solid state chemistry for many years and impact every aspect of modern life. The approach adopted in this thesis to access desirable functionality for enhanced fundamental understanding is via modifying existing materials by deploying reducing synthetic procedures. This work spans several groups of inorganic crystalline materials, but is unified by the development of new properties within host compounds of particular relevance to solid oxide fuel cell technology, which allow interstitial oxide ion conduction at elevated temperatures. The Ca₁₂Al₁₄O₃₂e₂ electride was successfully synthesized by replacing the mobile extra-framework oxygen ions with electrons acting as anions. The high concentration of electrons in the C12A7 electride gives rise to an exceptionally high electronic conductivity of up to 245 S cm⁻¹ at room temperature. Making use of the high density of electrons in Ca₁₂Al₁₄O₃₂e₂ electride, the strong N-N bonds in N₂ was found to be broken when heating Ca₁₂Al₁₄O₃₂e₂ in a N₂ atmosphere. A reaction between silicate apatites and the titanium metal yielded another completely new electride material La₉.₀Sr₁.₀(SiO₄)₆O₂.₄e₀.₂ which was found to be a semiconductor. To fully understand the role of oxygen interstitials in silicate apatites, high-resolution transmission electron microscopy (HRTEM) was employed as the main technique in probing how the oxygen nonstoichiometry is accommodated at the atomic level. Atomic-resolution imaging of interstitial oxygen in La₉.₀Sr₁.₀(SiO₄)₆O₂.₅ proved to be a success in this thesis. Substitution of oxygen in 2a and interstitial sites with fluoride ions in La[subscript(8+y)]Sr[subscript(2- z)](SiO₄)₆O[subscript(2+(3y-2z)/2)] (0
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Taninouchi, Yu-ki. "High Oxide-Ion Conductivity and Phase Transition of Doped Bismuth Vanadate." 京都大学 (Kyoto University), 2010. http://hdl.handle.net/2433/120866.

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Bu, Junfu. "Advanced BaZrO3-BaCeO3 Based Proton Conductors Used for Intermediate Temperature Solid Oxide Fuel Cells (ITSOFCs)." Doctoral thesis, KTH, Tillämpad processmetallurgi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-165073.

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In this thesis, the focus is on studying BaZrO3-BaCeO3 based proton conductors due to that they represent very promising proton conductors to be used for Intermediate Temperature Solid Oxide Fuel Cells (ITSOFCs). Here, dense BaZr0.5Ce0.3Y0.2O3-δ (BZCY532) ceramics were selected as the major studied materials. These ceramics were prepared by different sintering methods and doping strategies. Based on achieved results, the thesis work can simply be divided into the following parts: 1) An improved synthesis method, which included a water-based milling procedure followed by a freeze-drying post-processing, was presented. A lowered calcination and sintering temperature for a Hf0.7Y0.3O2-δ (YSH) compound was achieved. The value of the relative density in this work was higher than previously reported data. It is also concluded that this improved method can be used for mass-production of ceramics. 2) As the solid-state reactive sintering (SSRS) represent a cost-effective sintering method, the sintering behaviors of proton conductors BaZrxCe0.8-xLn0.2O3-δ (x = 0.8, 0.5, 0.1; Ln = Y, Sm, Gd, Dy) during the SSRS process were investigated. According to the obtained results, it was found that the sintering temperature will decrease, when the Ce content increases from 0 (BZCLn802) to 0.3 (BZCLn532) and 0.7 (BZCLn172). Moreover, the radii of the dopant ions similar to the radii of Zr4+ or Ce4+ ions show a better sinterability. This means that it is possible to obtain dense ceramics at a lower temperature. Moreover, the conductivities of dense BZCLn532 ceramics were determined. The conductivity data indicate that dense BZCY532 ceramics are good candidates as either oxygen ion conductors or proton conductors used for ITSOFCs. 3) The effect of NiO on the sintering behaviors, morphologies and conductivities of BZCY532 based electrolytes were systematically investigated. According to the achieved results, it can be concluded that the dense BZCY532B ceramics (NiO was added during ball-milling before a powder mixture calcination) show an enhanced oxygen and proton conductivity. Also, that BZCY532A (NiO was added after a powder mixture calcination) and BZCY532N (No NiO was added in the whole preparation procedures) showed lower values. In addition, dense BZCY532B and BZCY532N ceramics showed only small electronic conductivities, when the testing temperature was lower than 800 ℃. However, the BZCY532A ceramics revealed an obvious electronic conduction, when they were tested in the range of 600 ℃ to 800 ℃. Therefore, it is preferable to add the NiO powder during the BZCY532 powder preparation, which can lower the sintering temperature and also increase the conductivity. 4) Dense BZCY532 ceramics were successfully prepared by using the Spark Plasma Sintering (SPS) method at a temperature of 1350 ℃ with a holding time of 5 min. It was found that a lower sintering temperature (< 1400 ℃) and a very fast cooling rate (> 200 ℃/min) are two key parameters to prepare dense BZCY532 ceramics. These results confirm that the SPS technique represents a feasible and cost-effective sintering method to prepare dense Ce-containing BaZrO3-BaCeO3 based proton conductors. 5) Finally, a preliminary study for preparation of Ce0.8Sm0.2O2-δ (SDC) and BZCY532 basedcomposite electrolytes was carried out. The novel SDC-BZCY532 based composite electrolytes were prepared by using the powder mixing and co-sintering method. The sintering behaviors, morphologies and ionic conductivities of the composite electrolytes were investigated. The obtained results show that the composite electrolyte with a composition of 60SDC-40BZCY532 has the highest conductivity. In contrast, the composite electrolyte with a composition of 40SDC-60BZCY532 shows the lowest conductivity. In summary, the results show that BaZrO3-BaCeO3 based proton-conducting ceramic materials represent very promising materials for future ITSOFCs electrolyte applications.

QC 20150423

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Tate, Matthew Liam. "Structure-property relationships in oxide-ion conductors." Thesis, Durham University, 2017. http://etheses.dur.ac.uk/11949/.

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Literature review: Details the structure-property relationships of a selection of oxide-ion conductors and their potential use as solid electrolytes. Experimental methods: Describes the synthesis methods and analytical techniques used during this project. Structural characterisation and properties of the Bi1–xNbxO1.5+x materials (x = 0.0625, 0.11, and 0.12): The characterisation of tetragonal Bi0.9375Nb0.0625O1.5625 is reported for the first time. Thermal annealing of Bi0.89Nb0.11O1.61 and Bi0.88Nb0.12O1.62 resulted in decreases in oxide-ion conductivity due to partial cubic-to-tetragonal phase transitions. The structure-property relationships of Bi(III)-containing apatite-type oxide-ion conductors: The first Bi(III)-containing triclinic apatite, Bi2La8[(GeO4)6]O3, was characterised, with annular bright-field scanning-transmission electron microscopy directly imaging small concentrations of interstitial oxygen. Bond valence energy landscape modelling probed the potential pathways for interstitial oxide-ion migration in apatites. Understanding variable Re coordination environments in Bi28Re2O49: Reverse Monte Carlo analyses of Bi28Re2O49 using neutron total-scattering data found the local-scale structure to contain 4-, 5-, and 6-coordinate ReOx polyhedra. At 700 °C, migration of oxygen atoms between the Bi-O and Re-O sublattices occurs. Structure-property relationships of bismuth molybdate compositions, Bi38–xMo7+xO78+3x/2 (x = 0, 0.5): The fluorite-related superstructure of orthorhombic Bi38Mo7O78 was characterised using synchrotron X-ray and neutron diffraction data, with distortion-mode analysis undertaken to attempt to characterise the room-temperature monoclinic phase. Floating-zone-furnace crystal growth of fluorite- and apatite-type oxide-ion conductors: Crystals for a range of materials were grown using a floating-zone furnace, upon which single-crystal Laue neutron diffraction data were subsequently collected. Using this data, the complex rhombohedral superstructure of Bi0.913V0.087O1.587 was characterised. Synthesis, characterisation, and properties of the LaxSr10–xGa6O19+x/2 family (x = 0, 0.2, and 0.4): A range of lanthanum strontium gallates were synthesised to investigate the effect of interstitial oxygen content on the oxide-ion conductivity of these materials. Conclusions and future work: A summary of the project, including suggestions for future work.
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Kendall, Kurt Ross. "Rational design and synthesis of new oxide ion conductors." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10595.

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Fop, Sacha. "Novel oxide ion conductors in the hexagonal perovskite family." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=231087.

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Oxide ion conductors have received much attention in recent years due to their application as solid oxide fuel cells (SOFC) electrolytes. A strong correlation exists between the oxide ion conductivity and the crystal structure of an oxide ion conductor. Consequently, to develop novel electrolytes it is important to discover new structural families of oxide ion conducting materials. In the present study, the electronic properties and crystal structure of the hexagonal perovskite derivative Ba3MoNbO8.5 are reported. Ionic transport number and variable oxygen partial pressure conductivity measurements evidenced that Ba3MoNbO8.5 presents solid oxide ion conduction. A bulk conductivity of 2.2 x 10-3 S cm-1 at 600 C was observed, which is comparable to other leading oxide ion conductors. Ba3MoNbO8.5 is the first hexagonal perovskite derivative to exhibit fast solid oxide ion conductivity. The Ba3MoNbO8.5 structure was described by a hybrid structural model composed by a superimposition of the 9R hexagonal perovskite and palmierite structures. (Mo/Nb)O4 units coexist with (Mo/Nb)O6 units within the structure, forming a disordered arrangement of Mo/Nb tetrahedra and octahedra. Variable temperature neutron diffraction experiments allowed determination of the structural factors at the basis of the oxide ion conduction. In particular, the flexible coordination of the Mo/Nb cations and the distortion of the Mo(1)/Nb(1) polyhedra are thought to enhance the electrical properties so that a conductivity comparable to other leading solid oxide ion conductors is observed. Study of the electrical and structural features of the Ba3Mo1 xNb1+xO8.5-x/2 (x = 0.10, 0.20, 0.30) series also evidenced that the relative ratio of (Mo/Nb)O4 tetrahedra to (Mo/Nb)O6 octahedra and the disorder of the oxygen sub lattice are important for the conduction of the Ba3MoNbO8.5 system. Impedance spectroscopy measurements on the hexagonal perovskite derivatives Ba7MoNb4O20 and Ba3WNbO8.5 showed evidence of ionic contributions in these systems. In addition, neutron diffraction experiments revealed that both Ba7MoNb4O20 and Ba3WNbO8.5 exhibit structural characteristics analogues to Ba3MoNbO8.5. The results of the present study indicate the prospect of designing new oxide ion conductors with mixed tetrahedral and octahedral d-metal units in the hexagonal perovskite family.
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Peet, Joseph Richard. "Oxide ion conductors for energy applications : structure, dynamics and properties." Thesis, Durham University, 2018. http://etheses.dur.ac.uk/12602/.

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The work reported in this thesis investigates the relationships between the structural features of oxide ion conductors and the resulting oxide ion conduction mechanisms. This is achieved using a combination of attempted syntheses of new materials with novel structural features, direct observation of oxide ion dynamics via neutron scattering and simulation of oxide diffusion pathways using ab initio molecular dynamics. The results of a variable temperature solid state 23Na NMR investigation into nominal Sr0.6Na0.4SiO2.8 are reported, showing conclusively that the charge carriers in the material are Na+ ions rather than O2-. The preparation, characterisation and conductivity properties of the Sr1-xLaxSiO3+0.5x and Sr1-xLaxGeO3+0.5x series as well as Y3+ and Ce3+ doped BaZrSi3O9 are also reported. Quasieleastic and inelastic neutron scattering studies have been carried out, investigating diffusion processes in La2Mo2O9, Bi0.913V0.087O1.587 and La10-xBixGe6O27. These studies extend the body of work reporting the use of neutron scattering techniques on oxide ion conductors significantly. Phonon density of states derived from inelastic neutron scattering provide corroboration of the results gained from ab initio molecular dynamics calculations. The quasielastic neutron scattering results allow direct observation of long range oxide ion dynamics on timescales of nanoseconds, the longest timescales observed in oxide ion conductors reported to date. The findings from in depth ab initio molecular dynamics (AIMD) investigations into La2Mo2O9 and Bi0.913V0.087O1.587, with a larger simulation boxes and significantly longer simulation times than those previously reported, are also presented. These calculations have allowed the individual conduction mechanisms in these materials to be examined in much greater detail than in previous work. AIMD simulations have also been carried out to probe the dynamics in La10-xBixGe6O27 and explore the effects that Bi3+ doping has on individual oxide conduction mechanisms and overall conductivity. The AIMD simulations are supported by the first explicit electronic calculations of the lone pair locations and orientations in apatite materials, calculated via the use of the electron localisation function (ELF).
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Fan, Liangdong. "Development and characterization of functional composite materials for advanced energy conversion technologies." Doctoral thesis, KTH, Kraft- och värmeteknologi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-134111.

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The solid oxide fuel cell (SOFC) is a potential high efficient electrochemical device for vehicles, auxiliary power units and large-scale stationary power plants combined heat and power application. The main challenges of this technology for market acceptance are associated with cost and lifetime due to the high temperature (700-1000 oC) operation and complex cell structure, i.e. the conventional membrane electrode assemblies. Therefore, it has become a top R&D goal to develop SOFCs for lower temperatures, preferably below 600 oC. To address those above problems, within the framework of this thesis, two kinds of innovative approaches are adopted. One is developing functional composite materials with desirable electrical properties at the reduced temperature, which results of the research on ceria-based composite based low temperature ceramic fuel cell (LTCFC). The other one is discovering novel energy conversion technology - Single-component/ electrolyte-free fuel cell (EFFC), in which the electrolyte layer of conventional SOFC is physically removed while this device still exhibits the fuel cell function. Thus, the focus of this thesis is then put on the characterization of materials physical and electrochemical properties for those advanced energy conversion applications. The major scientific content and contribution to this challenging field are divided into four aspects except the Introduction, Experiments and Conclusions parts. They are: Continuous developments and optimizations of advanced electrolyte materials, ceria-carbonate composite, for LTCFC. An electrolysis study has been carried out on ceria-carbonate composite based LTCFC with cheap Ni-based electrodes. Both oxygen ion and proton conductance in electrolysis mode are observed. High current outputs have been achieved at the given electrolysis voltage below 600 oC. This study also provides alternative manner for high efficient hydrogen production.  Compatible and high active electrode development for ceria-carbonate composite electrolyte based LTCFC. A symmetrical fuel cell configuration is intentionally employed. The electro-catalytic activities of novel symmetrical transition metal oxide composite electrode toward hydrogen oxidation reaction and oxygen reduction reaction have been experimentally investigated. In addition, the origin of high activity of transition metal oxide composite electrode is studied, which is believed to relate to the hydration effect of the composite oxide. A novel all-nanocomposite fuel cell (ANFC) concept proposal and feasibility demonstration. The ANFC is successfully constructed by Ni/Fe-SDC anode, SDC-carbonate electrolyte and lithiated NiO/ZnO cathode at an extremely low in-situ sintering temperature, 600 oC. The ANFC manifests excellent fuel cell performance (over 550 mWcm-2 at 600 oC) and a good short-term operation as well as thermo-cycling stability. All results demonstrated its feasibility and potential for energy conversion. Fundamental study results on breakthrough research Single-Component/Electrolyte-Free Fuel Cell (EFFC) based on above nanocomposite materials (ion and semi-conductive composite) research activities. This is also the key innovation point of this thesis. Compared with classic three-layer fuel cells, EFFC with an electrolyte layer shows a much simpler but more efficient way for energy conversion. The physical-electrical properties of composite, the effects of cell configuration and parameters on cell performance, materials composition and cell fabrication process optimization, micro electrochemical reaction process and possible working principle were systematically investigated and discussed. Besides, the EFFC, joining solar cell and fuel cell working principle, is suggested to provide a research platform for integrating multi-energy-related device and technology application, such as fuel cell, electrolysis, solar cell and micro-reactor etc. This thesis provides a new methodology for materials and system innovation for the fuel cell community, which is expected to accelerate the wide implementation of this high efficient and green fuel cell technology and open new horizons for other related research fields.

QC 20131122

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Weaver, Paul. "Computational studies of interstitial-type oxide ion conductors for applications in solid oxide fuel cells." Thesis, University of Bath, 2011. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.547633.

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Zhen, Y. S. "Oxygen ion conduction in doped rare earth oxides." Thesis, University of Leeds, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383333.

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Books on the topic "Oxide ion conductor"

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(Editor), H. L. Tuller, Joop Schoonman (Editor), and Ilan Riess (Editor), eds. Oxygen Ion and Mixed Conductors and their Technological Applications (NATO Science Series E:). Springer, 2000.

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J, Fisher D., ed. Diffusion and ionic conduction in oxides: Data compilation. Trans Tech Publications, 2007.

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Book chapters on the topic "Oxide ion conductor"

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Ishihara, Tatsumi. "Oxide Ion Conductor." In Encyclopedia of Applied Electrochemistry. Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4419-6996-5_165.

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Matsumoto, Hiroshige. "Oxide Ion Conductor Steam Electrolysis." In Encyclopedia of Applied Electrochemistry. Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4419-6996-5_469.

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Kajitani, Masahiro, Motohide Matsuda, Akinori Hoshikawa, Takashi Kamiyama, Fujio Izumi, and Michihiro Miyake. "Doping Effect on Crystal Structure of Fast Oxide Ion Conductor LaGaO3-Based Perovskite Compounds." In Electroceramics in Japan IX. Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-411-1.227.

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Cussen, Edmund. "Lithium Ion Conduction in Oxides." In Functional Oxides. John Wiley & Sons, Ltd, 2010. http://dx.doi.org/10.1002/9780470686072.ch3.

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Yamamoto, Osamu, Takayuki Kawahara, Kazushige Kohno, Yasuo Takeda, and Nobuyuki Imanshi. "Oxide Ion Conductors for Solid Oxide Fuel Cells." In Solid State Materials. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-662-09935-3_24.

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Evans, Ivana Radosavljeviċ. "Chapter 3 Structural Characterisation of Oxide Ion Conductors." In Structural Characterization Techniques. Pan Stanford Publishing Pte. Ltd., 2016. http://dx.doi.org/10.1201/9781315364865-4.

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Boukamp, B. A., I. C. Vinke, K. J. Vries, and A. J. Burggraaf. "Surface Oxygen Exchange Kinetics of Solid Oxide Ion Conductors." In Fast Ion Transport in Solids. Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1916-0_9.

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Yang, Lei, Shizhong Wang, Ze Liu, Chendong Zuo, and Meilin Liu. "Mixed Proton-Oxide Ion-Electron Conducting Cathode for SOFCs Based on Oxide Proton Conductors." In Advances in Solid Oxide Fuel Cells V. John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470584316.ch10.

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Aurelie, Rolle, Roussel Pascal, Kongmark Chanapa, Pirovano Caroline, and Vannier Rose-Noelle. "Oxygen Diffusion Mechanisms in Two Series of Oxide Ion Conductors: BIMEVOX and Brownmillerite Materials." In Advances in Solid Oxide Fuel Cells III. John Wiley & Sons, Inc., 2009. http://dx.doi.org/10.1002/9780470339534.ch22.

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Weber, T. P., B. Ma, U. Balachandran, and M. McNallan. "Ion-Beam-Assisted Deposition of Magnesium Oxide Films for Coated Conductors." In Ceramic Transactions Series. John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118405932.ch4.

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Conference papers on the topic "Oxide ion conductor"

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Zhang, Lingling, Xue Li, Siwei Wang, Kevin Gregory Romito, and Kevin Huang. "Synthesis of Mixed Oxide-Ion and Carbonate-Ion Conductors Supported by a Prefabricated Porous Solid Oxide Matrix." In ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology collocated with ASME 2011 5th International Conference on Energy Sustainability. ASMEDC, 2011. http://dx.doi.org/10.1115/fuelcell2011-54076.

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A novel two-step approach is used to fabricate a two-phase mixed oxide-ion and carbonate-ion conductor (MOCC) that has been recently developed for intermediate temperature solid oxide fuel cells (IT-SOFCs) and CO2 separation membranes. In this study, a samarium doped ceria (SDC) is selected as an example to demonstrate the prefabrication of porous matrix by the “sacrificial template” methodology with NiO as the template material. NiO has been reduced into elemental Ni in the composite, and then removed by dissolving into a nitric acid. It was demonstrated by XRD, EDS and weight changes. The microstructure of the SDC matrix characterized with an SEM imaging reveals a uniform distribution of homogeneous micro-pores across the solid-oxide matrix. The strong porous solid-oxide matrix is prefabricated at high temperature, into which a molten carbonate phase is subsequently infiltrated. A Li-Na-carbonate-impregnated MOCC supported by a 41.8% porous SDC matrix shows an effective ionic conductivity of 0.43 S/cm at 650 °C.
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Paul, T., та A. Ghosh. "Crystal structure and electron density distribution of La1.9Bi0.1Mo2O9-δ fast oxide ion conductor". У NANOFORUM 2014. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4918210.

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Baek, Seung-Wook, Joongmyeon Bae та Jung Hyun Kim. "Oxygen Reduction Mechanism at Sm0.5Sr0.5CoO3−δ/Sm0.2Ce0.8O1.9 Composite Cathode for Solid Oxide Fuel Cell". У ASME 2008 6th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2008. http://dx.doi.org/10.1115/fuelcell2008-65059.

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The oxygen reduction mechanism at porous Sm0.5Sr0.5CoO3−δ/Sm0.2Ce0.8O1.9 composite cathode, in which Sm0.5Sr0.5CoO3−δ is a perovskite type mixed ionic and electronic conductor (MIEC), was studied with respect to the oxygen partial pressure and temperature. Symmetric half cells with Sm0.2Ce0.8O1.9 electrolyte were prepared, and cathode behavior was measured by using electrochemical impedance spectroscopy at frequency range of 0.1Hz∼5MHz and temperature range of 400∼900°C. Oxygen partial pressure range for the measurement was from 0.0002 to 1atm. In present research, reaction model based on the empirical equivalent circuit was established. Three elementary reaction steps were considered to describe the oxygen reduction reaction at Sm0.5Sr0.5CoO3−δ/Sm0.2Ce0.8O1.9 composite cathode. Electrode resistances corresponding to the high and low frequency seem to represent the oxygen ion transfer at the interface of electrolyte and gas phase diffusion of oxygen, respectively, from electrochemical impedance analyses as functions of oxygen partial pressure and temperature. The medium frequency process is expected to correspond to the oxygen ion conduction in the bulk cathode from this study.
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Gupta, M. K., Prabhatasree Goel, R. Mittal, and S. L. Chaplot. "Fast ion conduction and phonon instability in lithium oxide." In SOLID STATE PHYSICS: Proceedings of the 56th DAE Solid State Physics Symposium 2011. AIP, 2012. http://dx.doi.org/10.1063/1.4709891.

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Groves, J. R., P. N. Arendt, T. G. Holesinger, et al. "Dual Ion Assist Beam Deposition of Magnesium Oxide for Coated Conductors." In High-Energy Spin Physics: 8th International Symposium. American Institute of Physics, 2006. http://dx.doi.org/10.1063/1.2192417.

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Baidya, Arunmay, and Abhigyan Dutta. "Synthesis, optical and electrical properties of cubic La containing Mo based oxide ion conductors." In 3RD INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC-2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0001117.

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Paul, T., and A. Ghosh. "Characteristic length scale dependence on conductivity for La2-xErxMo2O9 (0.05 ≤ x ≤ 0.3) oxide ion conductors." In DAE SOLID STATE PHYSICS SYMPOSIUM 2015. Author(s), 2016. http://dx.doi.org/10.1063/1.4948173.

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Ferreira, R., and M. A. C. Berton. "New Ionic Conductor as Solid Electrolyte for Solid Oxide Fuel Cell Application." In 1st International Seminar on Industrial Innovation in Electrochemistry. Editora Edgard Blücher, 2014. http://dx.doi.org/10.5151/chempro-s3ie-13.

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Miglietti, Warren, and Tom Cullen. "Fluoride Ion Cleaning (FIC) at Sub-Atmospheric Pressure." In ASME Turbo Expo 2000: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/2000-gt-0338.

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Abstract:
The fluoride Ion cleaning (FIC) process is used to assist in the successful braze repair of nickel-based superalloy components. This process is especially effective in removing embedded oxides in cracks typically found in aircraft parts such as in combustors and turbine blades and vanes. Where, Al and Ti are present in the base metal, the FIC process depletes these elements from the surface, thereby improving the braze flow and repair of the cracked components. The objective of this paper is to show that mechanical properties of the braze repaired region can be adequate when the FIC process at sub-atmospheric pressure is utilized, prior to brazing. To achieve this, firstly entailed designing and producing specimens suitable to study the fatigue crack behavior of braze repaired cracks/joints under mechanical and thermal loading. The cracks/joints prior to brazing were either in an unclean form i.e. had an oxide layer on, or were fluoride ion cleaned at sub-atmospheric pressure. Fatigue crack propagation tests under constant load as well as under constant stress intensity factor range were conducted in order to study fatigue crack growth characteristics in the parent and braze repaired area. In addition, the resistance to thermal cycling was investigated using single-edge wedge specimens containing braze repaired joints. For the unclean crack specimens, abnormally high crack growth rates were obtained from the brazed repaired area as compared to parent Ni-based material; whereas for the fluoride ion cleaned crack specimens, lower crack growth rates were experienced. Similarly for the unclean crack specimens, the thermal fatigue crack initiation life was significantly shorter compared with the fluoride ion cleaned crack specimens.
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Novak, Mark D., and Carlos G. Levi. "Oxidation and Volatilization of Silicide Coatings for Refractory Niobium Alloys." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-42908.

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Degradation mechanisms relevant to hypersonic environments have been investigated for silicide-coated niobium alloys. To assess the suitability of silicide coatings for possible leading edge, scramjet combustor, and vehicle acreage applications, tests were conducted over a range of oxygen and water vapor partial pressures. X-ray diffraction was used to characterize the composition of oxide phases. Chemical compositions of both the coatings and resulting oxides have been examined using energy dispersive x-ray analysis. Partial pressures of oxygen and water vapor have been found to influence the oxide composition, which may include silica, chromia, iron niobate, and chromium niobate phases. The formation of volatile oxide and hydroxide species also affects oxidation behavior and coating performance. Thermodynamic models of oxidation and volatilization are used to interpret experimental results.
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Reports on the topic "Oxide ion conductor"

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Shriver, D. F., and M. A. Ratner. Mixed ionic-electronic conduction and percolation in polymer electrolyte metal oxide composites. Final report. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/491618.

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Scherer, Michelle M., and Kevin M. Rosso. 2015 Progress Report/July 2016: Iron Oxide Redox Transformation Pathways: The Bulk Electrical Conduction Mechanism. Office of Scientific and Technical Information (OSTI), 2016. http://dx.doi.org/10.2172/1271183.

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Brent Marquis. A Sensor System Based on Semi-Conductor Metal Oxide Technology for In Situ Detection of Coal Fired Combustion Gases. Office of Scientific and Technical Information (OSTI), 2007. http://dx.doi.org/10.2172/944414.

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