Reaction Kinetics and Morphological Study of TiNb2O7 Synthesized by Solid-State Reaction

• Autorzy: Choi S. H. , Ali B. , Choi K. S. , Hyun S. K. , Sim J. J. , Choi W. J. , Joo W. , Lim J. H. , Lee T. H. , Kim T. S. , Park K. T.

Identyfikatory

DOI

10.1515/amm-2017-0152

• Języki publikacji: EN

Abstrakty

EN

Although TiNb₂O₇ is regarded as a material with high application potential in lithium-ion batteries (LIBs) and solid-oxide fuel cells (SOFCs), it has been difficult to find suitable cost-effective conditions for synthesizing it on a commercial scale. In this study, TiNb₂O₇ compounds were synthesized by a solid state synthesis process. For stoichiometrically precise synthesis of the TiNb₂O₇ phase, the starting materials, TiO₂ and Nb₂O₅ were taken in a 1:1 molar ratio. Activation energy and reaction kinetics of the system were investigated at various synthesis temperatures (800,1000,1200, and 1400°C) and for various holding durations (1,5,10, and 20 h). Furthermore, change in the product morphology and particle size distribution were also evaluated as a function of synthesis temperature and duration. Additionally, quantitative phase analysis was conducted using the Rietveld refinement method. It was found that increases in the synthesis temperature and holding time lead to increase in the mean particle size from 1 to 4.5 μm. The reaction rate constant for the synthesis reaction was also calculated.

Słowa kluczowe

EN

solid state reaction; kinetic analysis; quantitative phase analysis; TiNb2O7 synthesis

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2017
• Tom: Vol. 62, iss. 2B
• Strony: 1051--1056
• Opis fizyczny: Bibliogr. 14 poz., rys., tab.

Twórcy

autor

Choi S. H.

• Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Eleventh Floor, Get-Pearl Tower, Gaetbeol-Ro 12, Yeonsu-Gu, Incheon, South Korea
• Department of Advanced Materials Engineering, IN-HA University, Incheon, South Korea

autor

Ali B.

• Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Eleventh Floor, Get-Pearl Tower, Gaetbeol-Ro 12, Yeonsu-Gu, Incheon, South Korea
• Department of Critical Materials and Semiconductor Packaging Engineering, University of Science and Technology, Daejeon, South Korea

autor

Choi K. S.

• Department of Materials Science and Engineering, Seoul, South Korea

autor

Hyun S. K.

• Department of Advanced Materials Engineering, IN-HA University, Incheon, South Korea

autor

Sim J. J.

• Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Eleventh Floor, Get-Pearl Tower, Gaetbeol-Ro 12, Yeonsu-Gu, Incheon, South Korea
• Department of Advanced Materials Engineering, IN-HA University, Incheon, South Korea

autor

Choi W. J.

• Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Eleventh Floor, Get-Pearl Tower, Gaetbeol-Ro 12, Yeonsu-Gu, Incheon, South Korea

autor

Joo W.

• Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Eleventh Floor, Get-Pearl Tower, Gaetbeol-Ro 12, Yeonsu-Gu, Incheon, South Korea

autor

Lim J. H.

• Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Eleventh Floor, Get-Pearl Tower, Gaetbeol-Ro 12, Yeonsu-Gu, Incheon, South Korea

autor

Lee T. H.

• Department of Materials Science & Engineering, University of Sheffield, Sheffield S1 3JD, United Kingdom of Great Britain and Northern Ireland

autor

Kim T. S.

• Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Eleventh Floor, Get-Pearl Tower, Gaetbeol-Ro 12, Yeonsu-Gu, Incheon, South Korea
• Department of Critical Materials and Semiconductor Packaging Engineering, University of Science and Technology, Daejeon, South Korea

autor

Park K. T.

• Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Eleventh Floor, Get-Pearl Tower, Gaetbeol-Ro 12, Yeonsu-Gu, Incheon, South Korea

Bibliografia

• [1] C. Jo, Y. Kim, J. Hwang, J. Shim, K. Chun, J. lee, Chem Mater. 26, 3508 (2014).
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• [8] M. Hirano, Y. Ichihashi, J. Mater. Sci. 44, 6135 (2009).
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• [10] A. D. Wadsley, Acta Crystallogr. 14, 660 (1961).
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• [12] R. S. Roth, A. D. Wadsley, Acta Crystallogr. 18, 724 (1965).
• [13] K. U. Santosh, Chemical kinetics and reaction dynamics. New Delhi: Springer, 2006.
• [14] E. H. James, Principles of chemical kinetics. 2nd ed. New York: Academic Press, 2007.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)