POS6-0631
Fluorinated Polymer Interphases for Enhanced Cycling Stability of Lithium Metal Batteries
Topic
S6. Emerging Polymer and Hybrid Materials for Advanced Energy Storage and Conversion
When and Where
Sep 29, 2026
08:30 - 09:30
Room 301 (Grand Ballroom)
Session Chairs
Hae Jung SON
Boseok KANG
Presenter(s)
Seongmin Kim (KAIST)
Co-Author(s)
Abstract
Lithium metal anodes offer high theoretical capacity but face critical challenges due to unstable interfaces with liquid electrolytes, leading to uneven deposition, dendrite formation, and rapid capacity decay. Polymer coatings have emerged as a promising strategy to mitigate these issues by forming protective interphases on the lithium surface. Here, we introduce a fluorinated acrylate-based polymer coating containing a functional additive that can simultaneously improve mechanical stability, facilitate lithium-ion transport, and regulate solid–electrolyte interphase (SEI) formation. The coating forms a thin, conformal, and elastomeric layer that maintains interfacial contact during repeated plating and stripping while suppressing parasitic reactions. Full cells pairing the coated lithium anodes with NCM cathodes show more uniform lithium deposition and significantly enhanced cycling stability compared to cells with unprotected lithium, demonstrating the effectiveness of this approach for stabilizing lithium metal batteries.
