Industrial Electrospinning Machine| Carbon Nanofibers Surface-Exposed with Highly Active AgNanoparticles for Enhanced Interfacial Dynamics of LithiumMetal Anodes

Challenge: Lithium metal anodes (LMAs) are widely regarded as key components for next-generation high-energy-density lithium batteries. The expansion of lithium-ion diffusion pathways exacerbates concentration polarization, leading to dendrite growth in LMAs.

Approach: A collaborative team led by Professor Shengjie Peng (Nanjing University of Aeronautics and Astronautics), Associate Researcher Linlin Li, and Professor Hongbo Geng (Changshu Institute of Technology) developed carbon nanofibers with surface-exposed highly active silver nanoparticles (Ag@CNF) through the combination of electrospinning and ion exchange technology, enhancing interfacial kinetics during lithium storage.

Innovation 1: Compared to electrodes with encapsulated active sites, the self-supporting and binder-free Ag@CNF significantly shortens lithium-ion diffusion pathways, reduces nucleation overpotential, and promotes uniform ion diffusion and deposition.

Innovation 2: This unique structure induces a thinner solid electrolyte interphase (SEI) layer, greatly reducing the apparent activation energy for charge transfer. Ag@CNF not only improves atomic utilization efficiency of active centers but also optimizes the performance of lithium metal batteries.

Innovation 3: Under high capacity (1.5 mAh cm-2) and low N/P ratio (2), the assembled full cell maintained a 90% retention rate after 300 cycles.

https://doi.org/10.1002/adfm.202506258