Dendrite‐Free Zn Anode Enabled by Dual‐Function Itaconic Acid Electrolyte Additive Via Controllable Acidic Environment and In Situ Interfacial Protective Layer for Durable Aqueous Zinc Ion Batteries

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

Published: Feb. 5, 2025

Abstract The side reactions and dendritic growth largely impede the utilization of Zn anode in aqueous zinc ion batteries (AZIBs). Herein, a novel strong acidic electrolyte additive itaconic acid (IA) is introduced to achieve highly stable via dual functions. First, use trace amounts IA can provide steady low pH environment for electrolyte, which beneficial eliminate alkaline by‐products by neutralizing OH − that accumulated near anode. Second, an interfacial protective layer be situ formed cross‐linking reduction reaction between anode, helping inhibit continuous corrosion on promote formation uniform deposition. Consequently, achieves ultra‐long cycle‐life (5390 h at 1 mA cm −2 , mAh ) enhanced coulombic efficiency (99.86% upon 2100 cycles 5 −1 ). Besides, full cell assembled with sodium vanadate delivers high reversible capacity 179.6 g over 2000 2 A . This work offers new solution related insights design electrolytes additives toward AZIBs.

Language: Английский

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Tailoring the Solvation Structure through Water Soluble Tartaric Acid Additive for Stable Zn Anode

Advanced Sustainable Systems, Journal Year: 2025, Volume and Issue: unknown

Published: April 27, 2025

Abstract Aqueous zinc‐ion batteries (AZIBs) with inherent safety, cost‐effectiveness and environmental compatibility have garnered significant attention for large‐scale energy storage. However, AZIBs still suffer from the hydrogen evolution reaction, Zn dendrite corrosion, which are closely correlated 2+ solvation structure. Therefore, designing an optimized structure reduced water molecules in shell is expected to achieve stable reversible plating/stripping. In this study, water‐soluble Tartaric Acid containing abundant ─COOH groups as electrolyte additive employed. The dissociated can replace around 2 ⁺, leading a restructured shell, not only inhibits side reactions, but also enhances kinetics of de‐solvation process, promoting formation flat dense zinc deposition layer. as‐prepared electrode exhibits impressive areal capacity 28.21 mAh cm −2 after resting 6 h excellent long‐term stability (800 cycles retention 81.76%). addition, situ microscope electrochemical impedance spectroscopy (EIS) synergistically identify outstanding structural enhanced kinetics, respectively. This work sheds light on constructing highly anode seawater‐based AZIBs.

Language: Английский

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‘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

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Zinc-Ion Coordinated Inorganic Silicone Quasi-Solid Electrolyte for Low Self-Discharge and Stable Zinc Metal Batteries

Electrochimica Acta, Journal Year: 2025, Volume and Issue: 530, P. 146409 - 146409

Published: May 6, 2025

Language: Английский

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Pore Sieving and Surficial Charge‐Driven Desolvation for High Spatial Charge Density Carbon Cathodes in Zinc‐Ion Hybrid Capacitors

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

Published: May 13, 2025

Abstract Aqueous zinc‐ion hybrid capacitors (ZIHCs) have emerged as a sustainable energy storage technology. However, the slow diffusion of large solvated Zn 2+ within nanopores and restriction on electric double layer (EDL) thickness limit spatial charge density in carbon electrodes. Herein, multi‐channel porous nanofibers (MC‐PCNFs) are designed with customized porosity high‐charge‐density interfaces to facilitate rapid [Zn(H 2 O) 6 ] desolvation compact EDL formation. The hierarchical hollow structure maximizes ion accessibility, while precisely tuned 1.07 nm pores enable direct adsorption onto catalytic sites, significantly reducing barrier. resulting ZIHCs achieve high reversible capacity 221 mAh g −1 , battery‐level 170.2 Wh kg (based cathode materials), outstanding long‐term cycling stability (>90,000 cycles, 98.7% retention), practically areal capacities. Through in/ex situ spectroscopy, theoretical calculations, kinetic analysis, electrochemical quartz crystal microbalance (EQCM) interfacial mechanisms comprehensively elucidated. This study provides scalable effective strategy for engineering, paving way next‐generation high‐energy, long‐cycle‐life ZIHCs.

Language: Английский

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Interfacial engineering via acid etching-directed (002) facet exposure and deposition control enables durable zinc anodes

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 647, P. 237355 - 237355

Published: May 17, 2025

Language: Английский

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