%0 Electronic Article
%A Vanita, Vanita
%A Schoch, Roland
%A Puphal, Pascal
%A Yilmaz, Hasan
%A Bauer, Matthias
%A Clemens, Oliver
%T Structural and Electrochemical behaviour of Bilayer Manganite LaSr<sub>2</sub>Mn<sub>2</sub>O<sub>6.96</sub> Cathode for all-solid-state Fluoride Ion Batteries
%M PUBDB-2025-03929
%D 2025
%Z working paper
%X In this study, we explore the potential of the RP-type bilayer manganite LaSrr<sub>2</sub>Mn<sub>2</sub>O<sub>6.96</sub> as an intercalation-based cathode material for all-solid-state fluoride ion batteries (FIBs). Structural changes of LaSrr<sub>2</sub>Mn<sub>2</sub>O<sub>6.96</sub> during fluoride intercalation and de-intercalation were analyzed via ex-situ X-ray diffraction, revealing that F- insertion induces the formation of three distinct tetragonal phases. To understand the complex behavior of these phases, we examined the changes in the Mn oxidation state and coordination environment using X-ray absorption spectroscopy and magnetic measurements. Under stack pressure (20 kN), electrochemical cycling of LaSrr<sub>2</sub>Mn<sub>2</sub>O<sub>6.96</sub> in the potential range of 1 V to -1 V exhibited a continuous increase in specific capacity from capacity of   30 mAh/g to   68 mAh/g over 200 cycles, with  99 
%F PUB:(DE-HGF)25
%9 Preprint
%R 10.26434/chemrxiv-2025-sdj3z
%U https://bib-pubdb1.desy.de/record/637939