Na3V2(PO4)2F3 as positive electrode for Li-ion batteries: investigation of the Na/Li ion-exchange and of the phase diagram upon cycling
The development of new materials for high energy density batteries takes an important part of academic and industrial research in the field of positive electrode materials for lithium-ion batteries. The energy density of positive electrode materials can be improved through an increase in its gravimetric or volumetric capacity and/or in the value of the redox couple Mn+1/Mn vs. Li. Recently we focused our interest on Na3V2(PO4)2F3 4 as a positive electrode material for Li and Na-ion batteries as more than one electron per transition metal is expected to be reversibly exchanged at a high voltage. The aim of the study proposed here is to get more insight into the Na+/Li+ ion exchange reaction occurring upon cycling of Na3V2(PO4)2F3 in lithium cells, but also to characterize the phase diagrams stabilized depending on the potential window used.
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CROGUENNEC Laurence; BIANCHINI Matteo; MASQUELIER Christian and SUARD Emmanuelle. (2013). Na3V2(PO4)2F3 as positive electrode for Li-ion batteries: investigation of the Na/Li ion-exchange and of the phase diagram upon cycling. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-24-525
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