Enthalpy‐Driven Molecular Engineering Enables High‐Performance Quasi‐Solid‐State Electrolytes for Long Life Lithium Metal Batteries

cells to maintain stability beyond 2000 cycles at 1C. Scale-up validation in a ≈1 Ah Li|NCM811 pouch cell achieves 94.4% capacity retention over 60 cycles. This strategy establishes a new pathway for developing high-performance, in situ polymerized quasi-solid-state batteries for practical energy storage applications.