Dynamic Networks of Fluorine-rich Acrylates Enable Highly Conductive and Flame-Retardant Electrolytes for Lithium Metal Batteries

W4413994623 · 수집 2026-10-04 18:16:39

T12084 Synthesis and properties of polymers

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A fluorinated gel polymer electrolyte (FGPE) was synthesized via in situ copolymerization of acrylamide (AM) and 1, 1, 1, 3, 3, 3-hexafluoroisopropyl acrylate (HFA). The synergistic interaction between -CF3 and C[double bond, length as m-dash]O groups endows the electrolyte with high ionic conductivity (1.21 × 10-3 S cm-1), a lithium-ion transference number of 0.68, and an electrochemical stability window up to 4.75 V. Symmetric Li‖FGPE‖Li cells exhibit stable cycling for over 1000 hours with a polarization voltage of 25 mV. Meanwhile, LFP‖Li full cells retain 87% of their initial capacity after 200 cycles, confirming the effectiveness of synergistic interactions between -CF3 and C[double bond, length as m-dash]O in enhancing the performance of high-energy lithium metal batteries. This study establishes a design paradigm for high-conductivity functional gel polymer electrolytes, providing a viable pathway toward lithium metal batteries with integrated high stability and high conductivity capabilities.

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