Inorganic–Organic Co‐Intercalated [Al_0.16(C₅H₁₄ON)_0.12]V₂O₅·0.39H₂O Cathode for High‐Performance Aqueous Zinc‐Ion Batteries

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Abstract Vanadium oxides hold great promise for aqueous zinc‐ion batteries (AZIBs) due to their multiple oxidation states, diverse crystalline structures, and high vanadium abundance. However, applications are limited by narrow interlayer spacing, poor reversibility, solubility. To address these issues, an inorganic–organic co‐intercalated [Al 0.16 (C 5 H 14 ON) 0.12 ]V 2 O ·0.39H cathode (IO‐V ) is reported with enlarged spacing (13.7 Å) enhanced structure stability better AZIBs. Serving as structural pillars, Al 3+ , betaine create a fast 2D channel Zn 2+ transport. The positively charged quaternary ammonium groups in strongly interact the lattice oxygen of V further stabilizing layered structure. polar carboxylic acid weaken interaction between V─O bonds thus improve diffusion kinetics lowered energy barriers. Consequently, IO‐V delivers specific capacity (549.5 mAh g −1 at 0.2 A ), ion rate (10 −8 ∼10 −7 cm s superior cycle life (80.1% retention after 20,000 cycles 30 ultrahigh density (416.3 Wh kg becoming state‐of‐the‐art systems comprehensive metrics. This study provides promising direction design vanadium‐based materials advanced

Language: Английский

‘Everything’ in Aqueous Zinc-ion Batteries can may be Prussian blue analogues: From cathode materials to electrolyte additives applications

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104299 - 104299

Published: May 1, 2025

Language: Английский