Frontispiece: Adaptive 3D Cross-Linked Single-Ion Conducting Polymer Electrolytes Enable Powerful Interface for Solid State Batteries

Developing single-ion conducting polymer electrolytes (SICPEs) with higher ambient ionic conductivity without compromising structural robustness has been challenging. In their Research Article (e202505232), Fang Lian, Zhaoxia Yang and co-workers report an adaptive 3D coordination electrolyte LiPHB prepared by chemical crosslinking of boron ion-centered lithium salt (LiT4PAB) as units with poly(vinylidene fluoride-co-hexafluoropropylene). Due to abundant conformational transitions and electrostatic interactions, SICPEs achieved adaptive deformation and excellent interfacial stability upon solid-state battery cycling.