| 초록 |
TiNb2O7 (TiO2·Nb2O5) regards as one of the most promising alternative materials in lithium ion batteries (LIB), solid oxide fuel cells (SOFC) and can also be utilized for electro-chromic devices, solid state humidity sensors etc. TiNb2O7 can be synthesized by many different processes such as solid state synthesis, laser-induced pyrolysis, hydrothermal crystallization, evaporation-induced self-assembly (EISA). Among them, solid state synthesis process has been considered as the most suitable process because of its economic importance and ease of handling. In this study, TiNb2O7 compounds were synthesized by solid state reaction. For precise synthesis of TiNb2O7, stoichiometric molar ratio of 1:1 for TiO2 and Nb2O5 was chosen. Activation energy and reaction kinetics were studied by varying temperature conditions (900, 1000, 1200, 1400 ºC) and holding time (5, 10, 15, 20 hrs). Moreover, change in particle size and morphology was investigated and quantitative phase analysis was performed by using Rietveld refinement method. |
