Reaction Kinetics and Morphological Study of TiNb2O7 Synthesized by Solid-State Reaction
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...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2017-06-01
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| Series: | Archives of Metallurgy and Materials |
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| Online Access: | http://www.degruyter.com/view/j/amm.2017.62.issue-2/amm-2017-0152/amm-2017-0152.xml?format=INT |
| _version_ | 1819018833728372736 |
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| author | 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. |
| author_facet | 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. |
| author_sort | Choi S.H. |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-21T03:25:42Z |
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| id | doaj.art-fb7e3fecf2714c5a82d80527d86a08f2 |
| institution | Directory Open Access Journal |
| issn | 2300-1909 |
| language | English |
| last_indexed | 2024-12-21T03:25:42Z |
| publishDate | 2017-06-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Metallurgy and Materials |
| spelling | doaj.art-fb7e3fecf2714c5a82d80527d86a08f22022-12-21T19:17:36ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092017-06-016221051105610.1515/amm-2017-0152amm-2017-0152Reaction Kinetics and Morphological Study of TiNb2O7 Synthesized by Solid-State ReactionChoi S.H.0Ali B.1Choi K.S.2Hyun S.K.3Sim J.J.4Choi W.J.5Joo W.6Lim J.H.7Lee T.H.8Kim T.S.9Park K.T.10Korea Institute for Rare Metals, Korea Institute of Industrial Technology, Eleventh Floor, Get-Pearl Tower, Gaetbeol-Ro 12, Yeonsu-Gu, Incheon, South KoreaKorea Institute for Rare Metals, Korea Institute of Industrial Technology, Eleventh Floor, Get-Pearl Tower, Gaetbeol-Ro 12, Yeonsu-Gu, Incheon, South KoreaDepartment of Materials Science and Engineering, Seoul, South KoreaDepartment of Advanced Materials Engineering, IN-HA University, Incheon, South KoreaKorea Institute for Rare Metals, Korea Institute of Industrial Technology, Eleventh Floor, Get-Pearl Tower, Gaetbeol-Ro 12, Yeonsu-Gu, Incheon, South KoreaKorea Institute for Rare Metals, Korea Institute of Industrial Technology, Eleventh Floor, Get-Pearl Tower, Gaetbeol-Ro 12, Yeonsu-Gu, Incheon, South KoreaKorea Institute for Rare Metals, Korea Institute of Industrial Technology, Eleventh Floor, Get-Pearl Tower, Gaetbeol-Ro 12, Yeonsu-Gu, Incheon, South KoreaKorea Institute for Rare Metals, Korea Institute of Industrial Technology, Eleventh Floor, Get-Pearl Tower, Gaetbeol-Ro 12, Yeonsu-Gu, Incheon, South KoreaDepartment of Materials Science & Engineering, University of Sheffield, SheffieldS1 3JD, United Kingdom of Great Britain and Northern IrelandKorea Institute for Rare Metals, Korea Institute of Industrial Technology, Eleventh Floor, Get-Pearl Tower, Gaetbeol-Ro 12, Yeonsu-Gu, Incheon, South KoreaKorea Institute for Rare Metals, Korea Institute of Industrial Technology, Eleventh Floor, Get-Pearl Tower, Gaetbeol-Ro 12, Yeonsu-Gu, Incheon, South KoreaAlthough 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.http://www.degruyter.com/view/j/amm.2017.62.issue-2/amm-2017-0152/amm-2017-0152.xml?format=INTTiNb2O7 synthesisSolid state reactionKinetic analysisQuantitative phase analysis |
| spellingShingle | 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. Reaction Kinetics and Morphological Study of TiNb2O7 Synthesized by Solid-State Reaction Archives of Metallurgy and Materials TiNb2O7 synthesis Solid state reaction Kinetic analysis Quantitative phase analysis |
| title | Reaction Kinetics and Morphological Study of TiNb2O7 Synthesized by Solid-State Reaction |
| title_full | Reaction Kinetics and Morphological Study of TiNb2O7 Synthesized by Solid-State Reaction |
| title_fullStr | Reaction Kinetics and Morphological Study of TiNb2O7 Synthesized by Solid-State Reaction |
| title_full_unstemmed | Reaction Kinetics and Morphological Study of TiNb2O7 Synthesized by Solid-State Reaction |
| title_short | Reaction Kinetics and Morphological Study of TiNb2O7 Synthesized by Solid-State Reaction |
| title_sort | reaction kinetics and morphological study of tinb2o7 synthesized by solid state reaction |
| topic | TiNb2O7 synthesis Solid state reaction Kinetic analysis Quantitative phase analysis |
| url | http://www.degruyter.com/view/j/amm.2017.62.issue-2/amm-2017-0152/amm-2017-0152.xml?format=INT |
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