A Mechanically Robust In-Situ Solidified Polymer Electrolyte for SiOx-Based Anodes Toward High-Energy Lithium Batteries

Inspired by the microstructure of high-mechanical-property dragonfly wings, a phase separation structure design philosophy of in-situ solidified polymer electrolytes was first proposed, enabling superior mechanical properties of them. By virtue of superior mechanical properties and the in-situ solidified preparation method, the failure behaviors of SiO x -based electrodes are effectively suppressed by the as-developed polymer electrolyte. A dragonfly wing microstructure-inspired polymer electrolyte (denoted as PPM-PE) enables excellent electrochemical performance of SiO x -based electrodes in button-type and soft package full cells.