Enhancing Interplanar Spacing in V₂O₃/V₃O₇ Heterostructures to Optimize Cathode Efficiency for Zn-Ion Batteries

Abstract

The improvement of sophisticated cathode materials plays a major role in boosting the efficiency of Zn-ion batteries. These batteries have garnered considerable interest as a result of their excellent energy density and the promise of cost-effective solutions for energy storage. In this work, we present a novel approach to progress the electrochemical investigation of Zn-ion batteries by expanding the interplanar distance of layered hydrated V 2 O 3 /V 3 O 7 heterostructure nanosheets. Electrochemical investigations were conducted to assess the effectiveness of the stacked hydrated V 2 O 3 /V 3 O 7 heterostructure as a cathode component for Zn-ion batteries. The expanded interplanar space as a result of the introduction of water molecules facilitates the insertion/extraction of Zn ions, leading to significantly enhanced electrochemical characteristics. The layered hydrated V 2 O 3 /V 3 O 7 heterostructure exhibited an impressive specific capacity of 330 mAh g −1 at a current density of 0.1 A g −1 , maintaining a capacity retention of approximately 92.3% and a coulombic efficiency of 95.8% even after 2000 cycles.

Scalable Metal Free Zinc Ion Capattery Enabled by Interstitial Defect Engineering of Nanoscale n-Type Zinc Vanadate

“…This drives the battery research sector to move toward post-lithium chemistries that are commercially viable. Among others, zinc-based energy storage systems are in the limelight for post-lithium battery systems and highly suitable for stationary energy storage due to their low cost and environmental friendliness. − Though there has been significant development in aqueous zinc ion batteries (ZIBs) using vanadium chemistry, − only limited research on non-aqueous ZIBs has been performed. Even less research has been done on the metal free zinc ion capattery (ZiC).…”