🔋 Site‐Preferential Trace Phosphorus Substitution Accelerates and Stabilizes the Activation of Lithium‐Rich Cathode Materials
📝 جانشینی ناچیز فسفر در جایگاههای خاص کاتد غنی از لیتیوم، فعالسازی جزء Li2MnO3 را تسریع و پایداری ساختاری و ظرفیت ۲۷۰ mAh/g را حفظ میکند.
📚 Journal: Advanced Functional Materials #AdvancedFunctionalMaterials
📅 Date: 2026-10-15
🔬 Research Article
💡 Novelty & Significance:
Trace P substitution in Li-rich Mn-based cathodes preferentially occupies Li-layer sites near Ni, modifying Li-slab and Ni─O/O electronic environments. This enables faster, more stable monoclinic Li₂MnO₃ activation with self-relaxing lattice response, delivering 273.1 mAh g⁻¹ at cycle 50 and 270.5 mAh g⁻¹ after 300 cycles—suppressing irreversible distortion, oxygen degradation, and voltage decay.
🔗 10.1002/adfm.79125
🏷 lithium-rich cathode · phosphorus substitution · oxygen redox · layered oxide · voltage decay
Post #15335
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