🔋 Unraveling the Origins of C‐Rate Dependent Capacity Decay in Fe‐Mn‐Based Prussian Blue Cathodes for Sodium Ion Batteries

📝 این مقاله با روش‌های درجا، مکانیزم‌های افت ظرفیت وابسته به نرخ در کاتدهای Prussian blue آهن-منگنز برای باتری سدیم-یون را شامل انحلال فلز، تخریب مکانیکی و دندریت Na شناسایی می‌کند.

📚 Journal: Advanced Functional Materials #AdvancedFunctionalMaterials
📅 Date: 2026-10-14
🔬 Research Article

💡 Novelty & Significance:
This study uniquely links C-rate capacity decay in Mn-doped Fe-PBA cathodes to coupled kinetic mismatch and mechanical failure, rather than isolated transition metal dissolution. By combining multiple in/ex situ techniques, it identifies four degradation pathways—dissolution, mechanical degradation, Na dendrites, and interfacial side reactions—revealing that high-rate collapse at 10 C is fundamentally driven by intrinsic kinetic and mechanical limitations, guiding durable high-power SIB design.

🔗 10.1002/adfm.78899

🏷 Prussian blue cathode · sodium-ion battery · capacity decay · high-rate · degradation mechanism