Y. Liu, X. Wang, Z.-S. Wu and X. Wu *

Advanced Functional Materials, 2025, accepted.

Layered vanadium oxides, characteristic of multi-electron redox reactions, have significantly expanded the achievable practical capacity in zinc-ion batteries. However, the low electrical conductivity and sluggish reaction kinetics still hinder their practical applications. Herein, anchoring strategy is demonstrated through conductive metal-organic frameworks composed of Cu and ligands of hexahydroxytriphenylene (Cu-HHTP) anchored on V3O7·H2O nanobelts via π-d conjugation interaction. The resulting anchored Cu-HHTP remarkably enhances the electrical conductivity of V3O7·H2O nanobelts, and provides fast reaction kinetics and efficient Zn2+ store sites. The as-assembled batteries of Zn||VO@Cu-HHTP-2 possess a specific capacity of 518 mAh g-1 at 0.2 A g-1. They achieve 5000 times cycling life with a high retention rate of 81% at 10 A g-1.  Furthermore, the pouch batteries display superior flexibility under violent def ormation. Therefore, we believe that this reliable anchoring fabrication strategy through conductive metal-organic frameworks will pave the way for high-performance zinc ion batteries.