Comprehensive regulation strategies for gel electrolytes in aqueous zinc-ion batteries

Coordination Chemistry Reviews, Год журнала: 2025, Номер 530, С. 216475 - 216475

Опубликована: Фев. 5, 2025

Язык: Английский

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Vanadium-Based Cathodes for Aqueous Zinc-Ion Batteries: Mechanisms, Challenges, and Strategies

Accounts of Chemical Research, Год журнала: 2024, Номер 57(19), С. 2887 - 2900

Опубликована: Сен. 16, 2024

ConspectusZinc-ion batteries (ZIBs) are highly promising for large-scale energy storage because of their safety, high energy/power density, low cost, and eco-friendliness. Vanadium-based compounds attractive cathodes versatile structures multielectron redox processes (+5 to +3), leading capacity. Layered or 3-dimensional open tunnel frameworks allow easy movement zinc-ions without breaking the structure apart, offering superior rate-performance. However, challenges such as dissolution phase transformation hinder long-term stability vanadium-based in ZIBs. Although significant research has been dedicated understanding mechanisms developing high-performance cathodes, uncertainties still exist regarding critical dissolution, actual active specific optimization strategy. For example, it is unclear whether materials α-V

Язык: Английский

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Advanced hydrogel electrolyte with enhanced interfacial adhesion and low-temperature resistant for flexible zinc-ion batteries

Chemical Engineering Journal, Год журнала: 2024, Номер 498, С. 155248 - 155248

Опубликована: Авг. 28, 2024

Язык: Английский

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Energy-locking-loop: Heterogeneous gel interphase potential enhances battery performance

Chemical Engineering Journal, Год журнала: 2025, Номер 505, С. 159393 - 159393

Опубликована: Янв. 9, 2025

Язык: Английский

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

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 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.

Язык: Английский

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Active Water Optimization in Different Electrolyte Systems for Stable Zinc Anodes

Small, Год журнала: 2025, Номер unknown

Опубликована: Янв. 31, 2025

Zinc (Zn) metal, with abundant resources, intrinsic safety, and environmental benignity, presents an attractive prospect as a novel electrode material. However, many substantial challenges remain in realizing the widespread application of aqueous Zn-ion batteries (AZIBs) technologies. These encompass significant material corrosion (This can lead to battery failure unloaded state.), hydrogen evolution reactions, pronounced dendrite growth at anode interface, constrained electrochemical stability window. Consequently, these factors contribute diminished lifespan energy efficiency while restricting high-voltage performance. Although numerous reviews have addressed potential separator design mitigate issues some extent, inherent reactivity water remains fundamental source challenges, underscoring necessity for precise regulation active molecules within electrolyte. In this review, mechanism AZIBs (unloaded charge discharge state) is analyzed, optimization strategy working principle electrolyte are reviewed, aiming provide insights effectively controlling process reaction, further formation, expanding range stability. Furthermore, it outlines promote its practical future development pathways.

Язык: Английский

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Integrated Janus gel with bilayered heterostructure for high-performance supercapacitors

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 686, С. 487 - 497

Опубликована: Фев. 1, 2025

Язык: Английский

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All‐Climate Energy‐Dense Cascade Aqueous Zn‐I₂ Batteries Enabled by a Polycationic Hydrogel Electrolyte

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 16, 2025

Abstract The practical development of aqueous zinc‐iodine (Zn‐I 2 ) batteries is greatly hindered by the low energy density resulting from conventional I 0 /I − conversion and limited temperature tolerance. Here, a temperature‐insensitive polycationic hydrogel electrolyte borax‐bacterial cellulose / p (AM‐ co ‐VBIMBr) (denoted as BAVBr) for achieving an energy‐dense cascade Zn‐I battery over wide range −50 to 50 °C designed. A comprehensive investigation, combining advanced spectroscopic investigation DFT calculations, has revealed that presence Br species in gel facilitates reaction /Br . Simultaneously, it activates high voltage + redox through interhalogen formation. Consequently, sequential highly reversible reactions involving , are achieved with assistance −NR 3 units BAVBr, effectively suppressing hydrolysis electrolyte. lead area capacity 0.76 mAh cm −2 at loading 1 mg or 760 g −1 based on mass iodine, demonstrating exceptional long‐term cycling stability °C. This study offers valuable insights into rational design electrolytes high‐energy batteries, specifically tailored wide‐temperature operation.

Язык: Английский

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Functional Ultrathin Separators Enabling Stable Zinc Anodes for Lean-Electrolyte Zinc-Ion Batteries

Journal of Membrane Science, Год журнала: 2025, Номер unknown, С. 123876 - 123876

Опубликована: Фев. 1, 2025

Язык: Английский

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Tailoring Crystalline States of Alloy Coating for High Current Density and Large Areal Capacity of Zn

Small, Год журнала: 2025, Номер unknown

Опубликована: Фев. 24, 2025

Due to issues of hydrogen evolution, corrosion, and uncontrolled deposition behaviors at the Zn anode, practical implementation Zn-ion batteries has faced significant obstacles. Very limited attention is directed toward various alloy crystalline states for anode protection primarily due challenge synthesizing high-quality coatings with diverse states. In this study, state NiCr coating precisely manipulated using magnetron sputtering, revealing distinct thermodynamic kinetic changes induced by variation in state. This research emphasizes fundamental understanding microstructure dynamics achieves a highly reversible harsh conditions high current density (80 mA cm-2) large areal capacity (40 mAh cm-2), thus enabling high-capacity longevous pouch battery.

Язык: Английский

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