Poly(<i>p</i>-benzoquinono)diimidazole-Linked Covalent Organic Framework as An Efficient Anode Endues Sodium-Ion Batteries with High Performance and Wide Temperature Adaptability

Sodium-ion batteries (SIBs) are potential alternatives in the postlithium electrification era. However, developing practical Na+ storage devices that offer temperature resilience, high capacity, superior rate performance, and durability remains a significant challenge. Herein, a poly(p-benzoquinono)diimidazole-linked covalent organic framework (COF; named CityU-36), prepared through polycondensation between 2,3,5,6-tetraaminobenzoquinone (TABQ) and 4,4′,4″-(1,3,5-triazine-2,4,6-triyl)tribenzaldehyde (TFPT), showcases significant advantages in pushing up the ability of Na+ storage and wide-temperature operability in SIBs. Thanks to its dense redox-active centers, structural robustness, uniformed porosities, and large surface area, CityU-36 exhibits an ultrahigh reversible capacity of 552 mAh g–1 at 0.1 A g–1, outstanding rate performance of 369 mAh g–1 at 8.0 A g–1, and exceptional long-term cyclability with 546 mAh g–1 at 5 A g–1 over 2900 cycles…