Interfaces; Electrochemistry; Batteries; Electrode; Sodium-ion; XPS
Marino Cyril, Cabanero Joel, Povia Mauro, Villevieille Claire (2018), Biowaste Lignin-Based Carbonaceous Materials as Anodes for Na-Ion Batteries, in Journal of The Electrochemical Society
, 165(7), A1400-A1408.
Leanza Daniela, Vaz Carlos A. F., Czekaj Izabela, Novák Petr, El Kazzi Mario (2018), Solving the puzzle of Li 4 Ti 5 O 12 surface reactivity in aprotic electrolytes in Li-ion batteries by nanoscale XPEEM spectromicroscopy, in Journal of Materials Chemistry A
, 6(8), 3534-3542.
Vogt Leonie O., Villevieille Claire (2017), Elucidation of the reaction mechanisms of isostructural FeSn 2 and CoSn 2 negative electrodes for Na-ion batteries, in Journal of Materials Chemistry A
, 5(8), 3865-3874.
Vogt Leonie O., Villevieille Claire (2016), FeSn 2 and CoSn 2 Electrode Materials for Na-Ion Batteries, in Journal of The Electrochemical Society
, 163(7), A1306-A1310.
Vogt Leonie O., Villevieille Claire (2016), MnSn 2 negative electrodes for Na-ion batteries: a conversion-based reaction dissected, in Journal of Materials Chemistry A
, 4(48), 19116-19122.
Vogt Leonie O., Marino Cyril, Villevieille Claire (2015), Electrode Engineering of Conversion-based Negative Electrodes for Na-ion Batteries, in CHIMIA International Journal for Chemistry
, 69(12), 729-733.
Vogt Leonie O., El Kazzi Mario, Jämstorp Berg Erik, Pérez Villar Sofía, Novák Petr, Villevieille Claire (2015), Understanding the Interaction of the Carbonates and Binder in Na-Ion Batteries: A Combined Bulk and Surface Study, in Chemistry of Materials
, 27(4), 1210-1216.
The main goal of this project is the development of the scientific background necessary for the new generation of high density energy electrodes for sodium-ion batteries.Since the commercialization of the first lithium-ion battery by Sony in the early 90’s, carbons and oxides, especially graphite and LiCoO2, have represented the vast majority of electrode materials. Nevertheless, the lithium-ion battery starts to reach its limitation due to the recent concern about the availability of lithium. One alternative is provided by sodium, which may replace lithium in batteries. As for the lithium system, the alloys present the best energy density even if they are linked to a high volume change while cycling. The project will start with different electrode compositions also called electrode engineering of high-charge-density-materials (Sn, Sb and P), followed by a complete electrochemical study which will help us to understand the role of the binders, conductive additives and electrolyte additives in sodium-ion batteries. A complete interface characterization of the surface properties, as well as the electrochemical reaction mechanisms during the cycling in a sodium cell will shed light on the relationship between bulk and interface properties and cyclability of Sn, Sb and P materials. Understanding the relation between the surface properties and the cyclability will help us to clarify the reaction mechanism of the electrolyte decomposition and to determine the relationship between electrode formulation/volume expansion and specific charge. These studies will be mostly carried out via sophisticated operando high-resolution approaches, essentially combined operando XRD/XAS and combined operando Raman and infrared spectroscopy for the surface properties.The fact that we cannot explain the relationship between the volume expansion, the interface chemistry, and the specific charge of the electrode tends to limit the development of new generations of batteries. Gaining better understanding of these relationships will trigger further development in this field.