Asymmetric Alicyclic Amine-Polyether Amine Molecular Chain Structure for Improved Energy Storage Density of High-Temperature Crosslinked Polymer Capacitor

•Asymmetric ACA-PEA chains were introduced to improve high-field polarization.•Electronic deep traps introduced by ACA-PEA structure led to higher EB.•The film shows both high energy storage density and efficiency at high temperature.•The self-healing ability caused by ACA-PEA structure ensures the super reliability.