Ultrafast Tailoring Amorphous Zn0.25V2O5 with Precision‐Engineered Artificial Atomic‐Layer 1T′‐MoS2 Cathode Electrolyte Interphase for Advanced Aqueous Zinc‐Ion Batteries

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 137(1)

Published: Sept. 30, 2024

Abstract Vanadium (V)‐based oxides as cathode materials for aqueous zinc‐ion batteries (AZIBs) still encounter challenges such sluggish Zn 2+ diffusion kinetics and V‐dissolution, thus leading to severe capacity fading limited life span. Here, we designed an ultrafast facile colloidal chemical synthesis strategy based on crystalline 0.25 V 2 O 5 ( c‐ ZVO) successfully prepare a‐ ZVO@MoS core@shell heterostructures, where atomic‐layer MoS uniformly coats the surface of amorphous ZVO. The tailored structure ZVO provides more isotropic pathways active sites , significantly enhancing during charge–discharge processes. Meanwhile, efficient artificial electrolyte interphase, precision‐engineered with semi‐metallic 1T′ phase not only contributes improved electron transport but also effectively inhibits V‐dissolution Therefore, prepared conceptually validated @MoS derived from commercial exhibit excellent cycling stability at ultralow current density (0.05 A g −1 ) while maintaining good rate capability retention. This research achievement a new effective various designs AZIBs superior performance.

Language: Английский

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Ammonium ion storage in hydrated vanadium oxide for energy storage

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: unknown, P. 177915 - 177915

Published: Dec. 1, 2024

Language: Английский

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Deep Layer Pillaring Reinforced Electronic States and Structural Defects Toward High‐Performance Sodium Ion Battery

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 13, 2024

Abstract Although layered vanadium oxides are extensively studied for sodium‐ion batteries (SIBs), their broader application is hindered by the instability of bulk‐phase structure, sluggish electron/ion‐transfer kinetics, and insufficient active sites. Herein, a novel synergistic strategy proposed to modulate electronic structure VO incorporating Na + cations into deep V─O layers (D‐NVO x ), resulting in significant structural modifications such as enlarged lattice spacing, generation abundant oxygen vacancies, disordering layers. Comprehensive analytical characterizations theoretical calculations reveal that this synergy induces reversible pseudocapacitive intercalation reconstructs low‐energy barrier channels, thereby accelerating Na‐ion diffusion kinetics. Moreover, vacancies dramatically boost conductivity reinforce stability. The reduced crystallinity distortion result dense nanointerfaces, potentially widening channels providing additional sites fast surface storage. Owing these merits, D‐NVO electrode achieves high specific capacity (505 mAh g ‒1 at 0.05 A outstanding cyclic stability (96% retention over 2000 cycles 2.0 superior rate performance (280 5.0 ). This work provides in‐depth insights enhancing electrochemical energy storage SIBs modulating defects.

Language: Английский

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Engineering Lattice Distortion and grain size in α-V2O5 for Enhanced Zinc Storage: Correlating Structural Evolution with Three-Stage Electrochemical Behavior in Zinc-Ion Batteries

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: unknown, P. 178385 - 178385

Published: Dec. 1, 2024

Language: Английский

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Selective Facet Shielding Induced Epitaxial Deposition Along the Zn (101) Plane for Highly Reversible Zn-Ion Batteries

Energy storage materials, Journal Year: 2024, Volume and Issue: unknown, P. 103995 - 103995

Published: Dec. 1, 2024

Language: Английский

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