Development of solid-state Fluoride-ion Batteries : cell design, electrolyte characterization and electrochemical mechanisms

Abstract : Solid-state fluoride-ion batteries rely on the reversible exchange of the F- ion between a metal and a metal fluoride through a solid electrolyte. These electrochemical devices can theoretically reach energy densities superior to conventional Li-ion commercial batteries. Consequently, fluoride-ion batteries can be seen as a new promising chemistry generating a growing interest. In this context, a part of our work has been dedicated to the development of a cell allowing the evaluation of their electrochemical performance. Moreover, particular attention was given to the electrochemical properties of the solid electrolyte, BaF2-doped LaF3, La1-xBaxF3-x. Finally, the structural changes taking place at the electrodes upon charge/discharge were studied in order to gain insight into the electrochemical mechanisms involved in these devices.
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Antonin Grenier. Development of solid-state Fluoride-ion Batteries : cell design, electrolyte characterization and electrochemical mechanisms. Chemical Physics [physics.chem-ph]. Université Pierre et Marie Curie - Paris VI, 2016. English. ⟨NNT : 2016PA066128⟩. ⟨tel-01395108⟩

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