Multifunctional Janus Separator Engineering for Modulating Zinc Oriented Aspectant Growth and Iodine Conversion Kinetics toward Advanced Zinc‐Iodine Batteries

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

Published: Jan. 20, 2025

Abstract Zinc‐iodine (Zn‐I 2 ) batteries are deemed as promising next‐generation energy storage devices in view of immanent security and high capacity. Nevertheless, their applications deteriorated by unruly dendritic Zn growth, severe polyiodide diffusion, sluggish iodine redox kinetics. Herein, MXene‐mediated Janus separators with heterogeneous double‐sided interfaces designed to simultaneously manipulate deposition accelerate adsorption‐conversion The anode side is composed zincophilic Cu‐modified hollow MXene spheres, which not only decreases nucleation barrier but also suppresses dendrite growth homogenizing electric field distribution inducing oriented aspectant dendrite‐free between the separator anode. While cathode side, consisting iodophilic Co‐modified N‐doped inhibits shuttling promotes electrocatalytic conversion through Co‐N‐C sites. Such an ingenious engineering achieves a durable circulation over 2900 h for Zn||Zn symmetric cells brings about ultrahigh capacity 274 mAh g −1 Zn‐I well ignorable decay (0.001% per circle) after 20 000 cycles. concept design integrating interfacial chemistry regulation physical structure optimization this work provides inspiration constructing advanced exceptional overall performance.

Language: Английский

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Toward Green and Sustainable Zinc‐Ion Batteries: The Potential of Natural Solvent‐Based Electrolytes

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 21, 2025

Abstract Zinc‐ion batteries (ZIBs) are emerged as a promising alternative for sustainable energy storage, offering advantages such safety, low cost, and environmental friendliness. However, conventional aqueous electrolytes in ZIBs face significant challenges, including hydrogen evolution reaction (HER) zinc dendrite formation, compromising their cycling stability safety. These limitations necessitate innovative electrolyte solutions to enhance ZIB performance while maintaining sustainability. This review explores the potential of natural solvent‐based derived from renewable biodegradable resources. Natural deep eutectic solvents (DES), bio‐ionic liquids, biomass‐derived organic compounds present unique advantages, wider electrochemical window, reduced HER activity, controlled deposition. Examples include DESs based on choline chloride (ChCl), glycerol‐based systems, γ‐valerolactone (GVL) aloe vera, demonstrating improved suppression. Despite promise, challenges high viscosity, scalability remain critical barriers commercialization. underscores need further research optimize solvent formulations, Zn anode compatibility, integrate these systems into practical applications. By addressing can pave way safer, high‐performance, environmentally ZIBs, particularly large‐scale storage systems.

Language: Английский

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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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First-principles study on the inhibition of HER by the primary and doped graphyne zinc anode protective layer

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 125, P. 117024 - 117024

Published: May 13, 2025

Language: Английский

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Achieving Highly Corrosion Resistant and Stable deep cycling Zinc Metal Anode Constructed by Coal-based Carbon Quantum Dots

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2025, Volume and Issue: unknown, P. 137316 - 137316

Published: May 1, 2025

Language: Английский

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