Exploring Structurally Stable Disordered Li-Rich Intercalation Cathodes for Enhanced Anion Redox Reliability
收藏DataCite Commons2026-03-02 更新2026-05-03 收录
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https://doi.esrf.fr/10.15151/ESRF-ES-2312906437
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Li-rich cation-disordered rock salt (DRS) cathodes have attracted attention due to their high capacity and energy density enabled by anion redox. However, rapid capacity fade caused by irreversible oxygen redox remains a challenge. To address this, we increased Mn content and substituted Ti⁴⁺ with Mn⁴⁺ in Li₁.₂Mn₀.₆Ti₀.₂O₁.₈F₀.₂, improving anion redox reversibility and capacity retention.1 This proposal will map oxidation states and the local electronic environment of Mn across charge states, following the methodology of Glatzel et al. (including CET, CEE and CIE spectra)2 Incident energy-dependent 1s2p RIXS and V2C-HERFD-XANES3 spectra will be collected to separate pre-edge and main absorption features, isolating transitions sensitive to oxidation state and electronic delocalization. These measurements will clarify how Mn substitution influences charge transfer and anion redox in Li-rich DRS materials
提供机构：
European Synchrotron Radiation Facility
创建时间：
2026-03-02
