物理化学学报2026，Vol.42Issue(3)：101-117,17.DOI:10.1016/j.actphy.2025.100181
双层锰酸盐正极LaSr2Mn2O6.96在全固态氟离子电池中的结构与电化学行为
Structural and electrochemical behaviour of bilayer manganite LaSr2Mn2O6.96 cathode for all-solid-state fluoride ion batteries
Vanita Vanita 1Roland Schoch 2Pascal Puphal 3Hasan Yilmaz 1Matthias Bauer 2Oliver Clemens1
作者信息
- 1. University of Stuttgart,Institute for Materials Science,Materials Synthesis Group,Heisenbergstraße 3,70569 Germany
- 2. Institute of Inorganic Chemistry and Center for Sustainable Systems Design (CSSD),Paderborn University,Warburger Straße 100,33098 Paderborn,Germany
- 3. Max-Planck-Institute,Heisenbergstr. 1,70569 Stuttgart,Germany
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摘要
Abstract
In this study,we explore the potential of the Ruddlesden-Popper(RP)-type bilayer manganite LaSr2Mn2O6.96 as an intercalation-based cathode material for all-solid-state fluoride ion batteries(FIBs).Structural changes of LaSr2Mn2O6.96 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 LaSr2Mn2O6.96 in the potential range of 1 V to-1 V exhibited a continuous increase in specific capacity from capacity of～30 mAh g-1 to～68 mAh g-1 over 200 cycles,with～99%coulombic efficiency and no signs of capacity fading.This makes the bilayer manganite LaSr2Mn2O6.96 a promising candidate for a cycling stable cathode for all-solid-state FIBs,especially under the application of stack pressure.关键词
电池/全固态氟离子电池/氟化/脱氟/Ruddlesden-Popper型结构/双层锰酸盐/插层型正极/电化学性能Key words
Battery/All solid-state fluoride ion battery/Fluorination/Defluorination/Ruddlesden-Popper type structure/Bilayer manganite/Intercalation-type cathode/Electrochemical performance分类
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Vanita Vanita,Roland Schoch,Pascal Puphal,Hasan Yilmaz,Matthias Bauer,Oliver Clemens..双层锰酸盐正极LaSr2Mn2O6.96在全固态氟离子电池中的结构与电化学行为[J].物理化学学报,2026,42(3):101-117,17.
