Studies on glass transition of lithium-iron phosphate glasses |
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| Authors: | I. Gorzkowska P. Jozwiak J. E. Garbarczyk M. Wasiucionek C. M. Julien |
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| Affiliation: | (1) Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland;(2) Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland;(3) Institut des Nanosciences de Paris, UMR-CNRS 7588, Université Pierre et Marie Curie, 140 rue de Lourmel, 75015 Paris, France |
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| Abstract: | Amorphous analogs of lithium-iron phosphates (LFP) were prepared by standard press-quenching method and their thermal stabilities as well as structural properties were studied for the first time. Glass transition temperature T g determined by DTA method was observed at the temperature range 492–523°C, depending on the glass composition. The maxima of crystallization peaks were observed in the 555–579°C range. In products obtained after heating up to 700°C the XRD patterns have revealed the presence of: LiFePO4 (triphylite), FePO4 (heterosite), α-FePO4 (quartz like structure) and Li3Fe2(PO4)3 (Nasicon like structure) phases. |
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| Keywords: | cathode materials DTA Li-ion batteries lithium-iron phosphate glasses phospho-olivines |
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