Enabling Scalable Polymer Electrolyte with Dual‐Reinforced Stable Interface for 4.5 V Lithium‐Metal Batteries

at room temperature. 4.5 V NCM622//Li batteries achieve prolonged operation with a retention rate of 85.0% after 500 cycles at 0.5 C. This work provides new insights into molecular design and processibility design for polymer-based high-voltage batteries.