Altering the Zn²⁺ Migration Mechanism Enables the Composite Hydrogel Electrolytes with High Zn²⁺ Conduction and Superior Anti‐Dehydration

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 27, 2025

Abstract Hydrogel electrolytes are favored for flexible zinc‐ion batteries (FZIBs) due to their biocompatibility. Their application progress, however, is severely restricted by the poor water retention and low Zn 2+ transference number (t ). Herein, one composite polymer electrolyte (CPE) prepared introducing Prussian blues (PBs) as multifunctional fillers in polyvinyl alcohol (PVA) matrix enhance t . Experimental theoretical characterizations confirm that PB filler can alter migration mechanism trap of CPE. PBs active provide extra zinc ions unique 3D ion diffusion channels. Moreover, metal centers framework function Lewis acid sites have good affinity with anions salt, facilitating dissociation salt. Additionally, absorb coordination water, enhancing anti‐dehydration capability ionic conductivity hydrogel electrolytes. Consequently, P‐15/Zn‐15 shows high 16.3 mS cm⁻ 1 0.63. The Zn||Zn symmetric cells stably operate 600 h at 50 °C. Zn||P‐15/Zn‐15|| NaV 3 O 8 ·1.5H 2 full cell exhibits excellent cycling performance cycles.

Язык: Английский

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High‐Energy‐Density Aqueous Zinc‐Ion Batteries: Recent Progress, Design Strategies, Challenges, and Perspectives

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 25, 2025

Abstract Aqueous zinc‐ion batteries (AZIBs) are emerging as a promising energy storage technique supplementary to Li‐ion batteries, attracting much research attention owing their intrinsic safety, cost economy, and environmental friendliness. However, densities for AZIBs still do not fulfill practical requirements because of the low specific areal capacity, limited working potential, excessive negative‐to‐positive electrode capacity (N/P) ratio. In this review, comprehensive overview basic major challenges achieving high‐energy‐density is provided. Following that, recent progress in optimization each component overall configuration summarized, crucial design principles discussed. Apart from conventional emphasis on part, especially cathode materials, separately, discussion about synergistic interactions among all components conducted. Finally, outlook direction given provide valuable guidance further holistic development aqueous batteries.

Язык: Английский

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Interface Engineering of Electron-Ion Dual Transmission Channels for Ultra-Long Lifespan Quasi-Solid Zinc-Ion Batteries

Energy storage materials, Год журнала: 2024, Номер 74, С. 103903 - 103903

Опубликована: Ноя. 12, 2024

Язык: Английский

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Ionic Liquid‐Based Hydrogel Electrolytes Enabling High‐Voltage‐Plateau Zinc‐Ion Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

Abstract Aqueous zinc ion batteries (ZIBs) have been recognized as highly promising energy storage systems due to their high safety, low cost, and environmental benignity. However, voltage platform of cathode, coupled with uneven Zn deposition, side reactions, limited operational temperature range caused by free water molecules, has hampered the practical application ZIBs. To address these issues, 1‐ethyl‐3‐methylimidazolium acetate (EmimAc) ionic liquid (IL) is utilized modify active in polyvinyl alcohol (PVA)‐based hydrogel electrolyte. The abundant hydroxyl groups on PVA chains, along strong interactions between IL H 2 O, disrupt hydrogen bonds molecules. This electrolyte alleviates improves low‐temperature performance through suppressing crystallization lowering freezing point Furthermore, binding 2+ restricts migration, ensuring de‐intercalation Na + at 3 V (PO 4 ) (NVP) thereby maintaining a plateau (1.48 V) for improved density. Benefitting from merits, pouch cell Zn||NVP achieves 100 cycles 25 °C, coin 81.3% capacity retention after 1600 −20 °C. work represents significant advance designing expanded voltage/temperature electrolytes

Язык: Английский

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Antifreezing functionalized-alginate-based electrolytes for zinc-ion batteries

Journal of Power Sources, Год журнала: 2024, Номер 626, С. 235776 - 235776

Опубликована: Ноя. 11, 2024

Язык: Английский

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Heat-Resistant Covalent Organic Framework (COF) PVA-Hybridized Gel Electrolyte for the Preparation of Dendrite-Free Zinc-Ion Batteries

Nano Letters, Год журнала: 2024, Номер unknown

Опубликована: Окт. 17, 2024

High-performance zinc-ion batteries (ZIBs) have attracted a great deal of attention due to their high theoretical capacity and level safety. Herein, we propose covalent organic framework (COF) hybrid poly(vinyl alcohol) (PVA)-based gel electrolyte, which can induce the uniform deposition Zn2+ achieve dendrite-free formation. By grafting sulfonic acid groups on surface COFs absorb Zn2+, strengthen interaction between strong ions dipoles in improve ionic conductivity, stable electroplating stripping. Due good thermal stability COF material itself, electrolyte with PVA hydrogel shows mechanical strength heat resistance is capable cycling for >1000 h at 50 °C, retention rate ≤75%. This study provides new approach developing high-temperature-resistant highly ZIBs.

Язык: Английский

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Biocompatible hydrogel electrolyte with high ionic conductivity and transference number towards dendrite-free Zn anodes

Journal of Material Science and Technology, Год журнала: 2024, Номер unknown

Опубликована: Дек. 1, 2024

Язык: Английский

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Optimization of the Preparation Process of Crosslinked Polyvinyl Alcohol and Its Thermal Stability in Cementing Slurry

Gels, Год журнала: 2025, Номер 11(2), С. 98 - 98

Опубликована: Янв. 30, 2025

This study focuses on addressing the limitations of fluid loss additive in cement slurry under higher temperatures. The synthesis process glutaraldehyde-crosslinked polyvinyl alcohol (PVA) was optimized to develop an efficient for oil well slurries. Using one-factor experiments and uniform design method, optimal parameters were established: a reaction temperature 50 °C; acid concentration 1 mol/L; PVA mass 8%; molar ratio glutaraldehyde hydroxyl group 1.47; crosslinking degree 1.49%. crosslinked demonstrated ability control API within mL when applied at 1% conditions 30–110 °C 6.9 MPa. Rheological analysis medium high temperatures revealed improved properties, including smooth thickening curves unaffected compressive strength. Further analyses, thermogravimetric (TGA), Zeta potential testing, scanning electron microscopy (SEM), that hydrogel remained thermally stable up 260 °C. Chemical transformed linear into network structure, enhancing its molecular weight, viscoelasticity, thermal stability. resistance mechanism is attributed hydrogel’s high-strength reticular structure which forms uniform, dense, highly adsorption layer, thereby improving both additive’s efficiency resistance.

Язык: Английский

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Highly Shear-Thickening Electrolyte with Impact Resistance for Flexible Aqueous Zinc-Ion Batteries

ACS Sustainable Chemistry & Engineering, Год журнала: 2025, Номер unknown

Опубликована: Фев. 27, 2025

Aqueous zinc-ion batteries (ZIBs) are desirable for large-scale energy storage due to their high density, cost-effectiveness, and eco-friendliness. However, the enhancement of durability under impact remains a major challenge since traditional liquid electrolytes prone leakage when subjected severe shocks or impacts. In this study, novel shear-thickening electrolyte was reported by integrating starch with Zn(CF3SO3)2 electrolyte. Under normal conditions, behaves like conventional excellent ionic conductivity, low viscosity, fluidity. While upon exposure external force stimuli, can change solid. Moreover, molecules have strong interactions Zn2+, promoting epitaxial electroplating Zn on anode effectively suppressing dendrite formation. The ZIBs fabricated based possess good electrochemical performance stability, capacity retention rate 96.5% after 3000 cycles at 2 A g–1. More interestingly, assembled AlVO/CC-50%/Zn flexible battery demonstrates bending angles up 90°. This shear- thickening prevents from damage caused force, thereby significantly boosting resistance properties ZIBs.

Язык: Английский

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Hydrophilic–hydrophobic structure of ANF/MFC separator for high-stable dendrite-free aqueous zinc-ion batteries

Journal of Material Science and Technology, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

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