Abstract
The properties of lithium titanates anodes in Li-ion batteries are highly dependent on their secondary constituents. While their main phase is usually constituted of Li4Ti5O12, significant quantity of lithium titanates compounds of various stoichiometry are often present, due to either the processing, usage or aging of the material. These may go underreported, as many of these spectrums overlap or display low signal in X-ray diffraction (XRD). Samples of nanosized lithium titanates synthetized by inductive plasma were characterized by XRD and scanning electron microscopy (SEM), as they provide a regular yet typical crystallite size and shape including multiple phases. A Rietveld refinement was developed to extract the composition of these samples. Mass balance through further annealing and differential scanning calorimetry (DSC) enthalpy measurements from phase transformations were also used as identification and validation techniques.
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Quesnel, F., Soucy, G., Veilleux, J., Hovington, P., Zhu, W., Zaghib, K. (2015). Characterization of the Phase Composition of Nanosized Lithium Titanates Synthesized by Inductive Thermal Plasma. In: Carpenter, J.S., et al. Characterization of Minerals, Metals, and Materials 2015. Springer, Cham. https://doi.org/10.1007/978-3-319-48191-3_48
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DOI: https://doi.org/10.1007/978-3-319-48191-3_48
Publisher Name: Springer, Cham
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