Optimizing the Interdomain Spacing in Alicyclic Polythiourea toward High‐Energy‐Storable Dielectric Material

• DOI: 10.1002/marc.202000167
• Publication Date: 2020-05-27T09:26:23Z
• Authors: Yang Feng; Liuqing Yang; Guanghao Qu; Takeo Suga; Hiroyuki Nishide; George Chen; Shengtao Li
• Keywords: High-κ dielectric; Energy landscape

Abstract Organic dielectric materials have been widely developed and investigated for energy storage capacitors. However, challenges remain in terms of the relatively low constant density. Enhancing dipolar polarization to increase is considered be an effective way improve density polymer dielectrics. Herein, enlightened by chain‐packing structure that affects relaxation behavior, a simple low‐cost approach proposed tailor interdomain spacing alicyclic polythiourea (PTU) changing quenching temperatures further facilitate polarization. It found large beneficial promote localized motion segmental chains amorphous regions, but at same time inevitably reduces dipole Therefore, order achieve highest PTU, there optimal value spacing. worth noting PTU increases from 5.7 10, thus 53% 16.3 J cm −3 . proposes feasible strategy through optimizing toward high‐energy‐storable material.