SiO_x Based Anodes for Advanced Li‐Ion Batteries: Recent Progress and Perspectives

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 26, 2024

Abstract SiO x with high theoretical capacity is regarded as a promising high‐performance anode material for lithium‐ion batteries. The main problem the dramatic volume expansion after lithiation and inherent poor conductivity. Tackling these problems, extensive strategies are proposed ‐based materials in order to pursue initial Coulombic efficiency, reversible capacity, long cycle stability. In this review, lithium storage mechanism, merits, disadvantages of will be introduced detail. Significant progress about recent years their detailed summarized. Finally, challenges potential solutions development application proposed. This review aims offer reference research associated good guide further improvements materials.

Язык: Английский

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Hydrogel Electrolyte with Regulated Water Activity and Hydrogen Bond Network for Ultra‐Stable Zinc Electrode

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 14, 2024

Abstract Quasi‐solid‐state zinc‐ion batteries (QZIBs) have attracted wide attention due to their excellent dimensional stability and high safety. However, poor ion conduction capabilities, severe dendrite growth, rampant side reactions still hinder commercialization. The regulation of the solvation structure Zn 2+ is considered be an effective method address these issues. Herein, a hydrogel electrolyte with regulated (HE‐RS) designed via combination tetramethyl urea (TMU) additive polyvinyl alcohol (PVA) matrix. hydrophilic ─C═O group TMU exhibits strong affinity PVA chains, improving mechanical strength ─N(CH 3 ) 2 groups at both ends exhibit hydrophobic characteristics, which leads local hydrophobicity decreased water activity. Additionally, abundant oxygen‐containing (electronegative) on TUM can adsorb provide sites for transference. Benefiting from merits, deposition behavior are regulated. Consequently, Zn||Zn symmetric cell HE‐RS stable cycling life exceeding 2000 h. Moreover, HE‐RS‐based Zn||NH 4 V O 10 capacity retention 96.4% after 1000 cycles A g −1 .

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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All-temperature electrolytes for aqueous electrochemical capacitors operating from −60 to 140 °C0

Journal of Energy Storage, Год журнала: 2025, Номер 112, С. 115552 - 115552

Опубликована: Янв. 28, 2025

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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Zinc Single‐Atom Catalysts Encapsulated in Hierarchical Porous Bio‐Carbon Synergistically Enhances Fast Iodine Conversion and Efficient Polyiodide Confinement for Zn‐I₂ Batteries

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 31, 2025

Aqueous zinc iodine (Zn-I2) batteries have attracted attention due to their low cost, environmental compatibility, and high specific capacity. However, development is hindered by the severe shuttle effect of polyiodides slow redox conversion kinetics (I2) cathode. Herein, a long-life Zn-I2 battery developed anchoring within an edible fungus slag-derived carbon matrix encapsulated with Zn single-atom catalysts (SAZn@CFS). The N content microporous structure SAZn@CFS provide strong confinement, while Zn-N4-C sites chemical interact effectively mitigating dissolution polyiodide effect. Additionally, uniformly distributed SAZn significantly enhance efficiency I-/I3 -/I5 -/I2, leading improved At current density 10 A g-1, designed delivers excellent capacity 147.2 mAh g-1 long lifespan over 80 000 cycles 93.6% retention. Furthermore, exhibits stable operation for 3500 times even at 50 °C, demonstrating significant advances in reversible storage. This synergistic strategy optimizes composite structure, offering practical approach meet requirements high-performance batteries.

Язык: Английский

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Fundamentals, Advances and Perspectives in Designing Eutectic Electrolytes for Zinc-Ion Secondary Batteries

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Март 6, 2025

Zinc-ion secondary batteries have been competitive candidates since the "post-lithium-ion" era for grid-scale energy storage, owing to their plausible security, high theoretical capacity, plentiful resources, and environment friendliness. However, many encumbrances like notorious parasitic reactions Zn dendrite growth hinder development of zinc-ion remarkably. Faced with these challenges, eutectic electrolytes aroused notable attention by virtue feasible synthesis tunability. This review discusses definition advanced functionalities in detail divides them into nonaqueous, aqueous, solid-state regard state component electrolytes. In particular, corresponding chemistry concerning solvation structure regulation, electric double layer (EDL) structure, solid-electrolyte interface (SEI) charge/ion transport mechanism is systematically elucidated a deeper understanding Moreover, remaining limitations further are discussed electrolyte design extended applications.

Язык: Английский

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Remolding the Interface Stability for Practical Aqueous Zn/I₂ Batteries via Sulfonic Acid‐Rich Electrolyte and Separator Design

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 10, 2025

The electrolyte-electrode interface plays a crucial role in aqueous Zn/I2 battery and is largely determined by the properties of electrolyte separator. Here, synergistic effect sulfonic acid-rich additive separator impacts stability batteries comprehensively investigated using operando synchrotron-based Fourier-transform infrared spectroscopy, cryo-electron microscopy, situ spectroscopy. As case study, cost-effective known as lignosulfonic acid sodium (LAS) flexible sulfonated polyether sulfone membrane are employed to facilitate formation stable solid (SEI) on Zn anode effectively suppress shuttle effect. chemisorption LAS Zn, its interaction with Zn2+, impact desolvation process systematically through both theoretical simulations measurements. Furthermore, an SEI consisting ZnS ZnF2 identified, which facilitates uniform nucleation planar plating Zn(002), while suppressing detrimental side reactions. Additionally, visualization experiments spectroscopy confirm that R-SO3- groups impede I3-/I5- anions electrostatic repulsion. This work provides valuable insights for designing robust interfaces high-performance batteries.

Язык: Английский

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Facile Synthesis of a Highly Efficient and Durable Bifunctional Oxygen Electrocatalyst CFS@CN/F Composite for Rechargeable Zinc-Air Batteries

ACS Applied Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 22, 2025

Язык: Английский

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Functionally Segregated Ion Regulation Enables Dual Confinement Effect for Highly Stable Zinc‐Iodine Batteries

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 13, 2025

Abstract Conventional electrolytes in aqueous zinc‐iodine batteries struggle to suppress the shuttle effect and enhance interfacial stability, resulting high self‐discharge rate, low areal capacity, short cycle life. To address these issues, a dual‐confinement hydrogel electrolyte (DCHE) is designed simultaneously stabilize iodine cathode zinc anode at capacities via functionally segregated ion regulation strategy. As for cathode, anion‐functional groups DCHE repel polyiodides, while cation‐functional adsorb those that escape repulsion, thereby reinforcing suppression of polyiodide migration toward anode. This dual confinement effect, validated by theoretical simulations situ characterization, effectively mitigates effect. Additionally, hydrophilic zincophilic functional regulate hydrogen‐bond network Zn 2+ flux, strengthening electrochemical stability result, Zn//ZnI 2 cell assembled with delivers practical capacity 4.5 mAh cm −2 achieves record‐long lifespan exceeding 6000 h 88.9% retention 100 mA g −1 . Furthermore, single‐layer pouch exhibits good mechanical retaining 80% its after cycles 90° bending. work highlights importance advancing high‐performance batteries.

Язык: Английский

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