Synthesis and electrochemical behaviour of titanium niobates: A step toward stable anode materials
Previous studies have demonstrated the potential long-term cyclability and stability of TNOs as electrodes in LIBs. However, the wide variety of stoichiometries of TNOs has complicated the study of the physicochemical properties of this material, which can change greatly between different phases, co...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/122341 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/122341 |
| Access Level: | acceso abierto |
| Palabra clave: | 538.9 544.6 Niobates Titanium Niobium Mixed oxides Lithium-ion batteries Hydrothermal synthesis Anodes Física de materiales Materiales 2211 Física del Estado Sólido 2210.05 Electroquímica |
| Sumario: | Previous studies have demonstrated the potential long-term cyclability and stability of TNOs as electrodes in LIBs. However, the wide variety of stoichiometries of TNOs has complicated the study of the physicochemical properties of this material, which can change greatly between different phases, compositions and structures. In this study, two TNO compositions (TiNb2O7 and Ti2Nb10O29) have been synthesized via solid-state and hydrothermal synthesis. A detailed electrochemical characterization as electrodes for LIBs has been performed. A capacity of 257.3 mA h g 1 has been obtained with losses <6 % after 300 cycles at 1C for the hydrothermal route of the Ti2Nb10O29 composition. Additionally, a complete recovery of capacity was observed after cycling at higher velocities (5C, 10C). |
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