🔋 Elucidating Polymer–Cathode Interfacial Interactions in Pyrolytic Pretreatment of Spent Lithium-Ion Batteries

📝 این مقاله نشان می‌دهد که برهم‌کنش‌های بین‌سطحی پلیمر و کاتد در پیش‌تیمار پیرولیز باتری‌های لیتیوم-یون مستعمل، با تشکیل پوشش‌های کربنی، مهاجرت لیتیم را در بازیابی بعدی مختل می‌کند.

📚 Journal: ACS Nano #ACSNano
📅 Date: 2026-10-08
🔬 Research Article

💡 Novelty & Significance:
This study overturns the assumption that pyrolysis pretreatment is inert to spent battery cathodes. It reveals that carbonaceous residues from PVDF/separator interact with NCM surfaces, forming oxygen-rich coatings along grain boundaries that block lithium diffusion and cut recovery below 80%. Raising oxygen partial pressure removes these barriers, restoring 96.88% efficiency—highlighting pyrolysis's critical, previously overlooked role in recycling.

🔗 10.1021/acsnano.6c15783

🏷 spent lithium-ion batteries · pyrolysis · cathode interface · PVDF · lithium recovery