上海科技大学知识管理系统

2D conductive metal–organic frameworks (2D c-MOFs) as emerging 2D graphene-like crystalline materials have become a promising platform for energy storage. However, their capacity is largely constrained by the limited number of electroactive sites. Integrating multiple redox-active moieties into the 2D c-MOF skeletons is an efficient strategy toward high-performance battery cathodes. Herein, by tailoring an anthraquinone-based multitopic catechol ligand, a novel quinone-containing copper-catecholate MOF (Cu-TBPQ MOF) is successfully developed. The Cu-TBPQ MOF exhibits abundant porosity, excellent conductivity, and multiple redox-active sites. These characteristics make it an ideal candidate as a cathode material for zinc ion batteries. Notably, the Cu-TBPQ MOF demonstrates an impressive reversible specific capacity of 371.2 mAh g−1 at a current density of 50 mA g−1. Furthermore, it exhibits outstanding rate capability and long-term durability, retaining a capacity of 120.3 mAh g−1 at a high current density of 2.0 A g−1 even after 500 charge–discharge cycles. The successful enrichment of redox-active sites in the work opens up new avenues for the rational design of electrochemically active 2D c-MOFs, enhancing their potential for advanced energy storage applications. © 2024 Wiley-VCH GmbH.