Reconfiguring the Coordination Structure in Deep Eutectic Electrolytes for Enabling Stable Operation of Zinc-Ion Batteries

Nano Letters, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 18, 2024

Highly stable aqueous Zn-ion batteries are of great importance for commercial applications. The challenging issues interfacial side reactions and rampant dendrite growth cause short circuit premature failure batteries. Herein, a hydrated deep eutectic electrolyte is formulated to tackle such problems, which adopts 1,3-propanediol as cosolvent. 1,3-Propanediol molecules can enter into the Zn

Язык: Английский

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Biomimetic Quasi‐Skin‐Capillary Structure Engineering of Ionic‐Electronic Conducting Full‐Chain Networks for Stable Zinc Powder Anodes

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 27, 2024

Abstract Compared with prevailing Zn foil, powders (ZnP) special‐shaped tunability and large‐scale processability are considered promising anodes for propelling batteries, but face the issue of discrete contact between particles due to their intrinsic monodispersed geometries. Here a novel biomimetic quasi‐skin‐capillary ZnP anode ionic‐electronic conducting full‐chain networks (ZnP‐FC) is designed, characterized by an aramid nanofiber (ANF) surface coating (skin) ZnP‐ANF interwoven inner skeleton (capillary). The epidermal not only stabilizes anode/electrolyte interface homogenize 2+ flux shields direct H 2 O also extends inward as capillary‐like adhesive anchor affords high selectivity boosting plating/stripping efficiency. Benefiting from these favorable attributes, ZnP‐FC||ZnP‐FC cell enables kinetics stable ion migration afford long‐term operation over 1650 h at 5 mA cm −2 . Moreover, ZnP‐FC||KV 12 30‐ y ·nH full battery harvests high‐rate capability (15 A g −1 ) ultralong cyclic stability (6000 cycles). This work structural engineering landscape powder advanced batteries.

Язык: Английский

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Passivated Zn Powders as Metal Anode

Advanced Materials Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Янв. 12, 2025

Abstract Impacted by heavy corrosion and poor connections, zinc (Zn) powders have rarely been considered as the raw materials of Zn‐ion aqueous batteries (ZABs). Nonetheless, ease controlling loadings Zn entitles ZABs to better capacity match between negative positive electrodes. Here, a simple rapid chemical solution passivation method is reported, which leads thin, dense, conformal layer on powder surface. The suppresses parasitic reactions anode, mitigates corrosions, extends calendar life. Mixing with well‐dispersed carbon nanotubes, passivated anode able cycle 100 h under 3 mA cm −2 mAh at depth discharge 41.3%. Besides, negative/positive electrode ratio 5.95 improves energy density powder||MnO 2 full cell 70 Wh Kg −1 . Such “one‐step” believed be “drop‐in” technique applied in scalable manufacture ZABs.

Язык: Английский

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Mitigating ion flux vortex enables reversible metal electrodeposition

Research Square (Research Square), Год журнала: 2025, Номер unknown

Опубликована: Янв. 20, 2025

Metal anodes hold considerable promise for high-energy-density batteries but are fundamentally limited by electrochemical irreversibility caused uneven metal deposition and dendrite formation, which compromise battery lifespan safety. The chaotic ion flow (or flux vortex) near the electrode surface, driving these instabilities, has remained elusive due to limitations in conventional techniques such as scanning electron atomic force microscopies, invasive incapable of probing internal structures deposits. Here, we employ in-situ X-ray computed tomography non-destructively visualize Zn on LAPONITE-coated anodes, providing insights into structural evolution orientation. Combined with computational fluid dynamics simulations, demonstrate that LAPONITE coating, its separated positive negative charge centers, suppresses ionic vortex guiding uniform, dense, vertically aligned growth along (100) plane, thereby significantly mitigating growth. This translates a 3.54-Ah Zn-MnO₂ pouch cell stable performance over 100 cycles, offering viable path toward scalable, high-performance metal-anode batteries.

Язык: Английский

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3D fluorinated honeycomb cavity morphology through modulated crystal facet for dendrite-free aqueous zinc batteries

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 159909 - 159909

Опубликована: Янв. 1, 2025

Язык: Английский

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Regulating the Thermodynamic Uniformity and Kinetic Diffusion of Zinc Anodes for Deep Cycling of Ah-Level Aqueous Zinc-Metal Batteries

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

Zn metal anodes in mildly acidic electrolytes usually suffer from a series of problems, including parasitic dendrite growth and severe side reactions, significantly limiting the utilization efficiency cycling life. A deep understanding stripping/plating process is essential to obtain high-efficiency long-life anodes. Here, factors affecting are revealed, suggesting that thermodynamic uniformity bulk structures promotes an orderly stripping process, fast kinetic diffusion rate on surface facilitates uniform deposition. Then, co-optimized strategy for stabilizing proposed, which confirmed effectively suppress reactions. Thus, modified display record-breaking lives 1200 200 h under ultrahigh efficiencies 80 93.5%, respectively. More importantly, using this anode enables us realize Ah-level pouch cells continuous cycles harsh conditions.

Язык: Английский

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Highly reversible Zn anode by ion flow regulation and micro-corrosion zone division

Research Square (Research Square), Год журнала: 2025, Номер unknown

Опубликована: Март 19, 2025

Aqueous zinc-ion batteries (AZIBs) have been receiving continuous attention as candidates for the next generation of safe batteries, but poor reversibility Zn anode limits their further development. In recent years, researchers obsessed with modifying surface and adjusting solvation structure Zn²⁺ to address these challenges. Here, we present a novel strategy improve by simultaneously regulating zinc ion flow dividing micro-corrosion zones on anode, thereby manipulating deposition behavior relieving corrosion anode. This approach exploits keto-enol tautomerism α-acetyl-γ-butyrolactone (ABL) develop specifically designed additive: coordinated complex (ZnABL). With this innovative additive, anodes showed excellent reversibility: Zn||Zn symmetric cell achieved long cycle life 7780 h (about 11 months) Coulombic Efficiency averagely reached high value 99.87 %. Furthermore, Zn||Zn_0.25V₂O₅·H₂O near-ampere-hour pouch cell, featuring areal capacity 7.9 mAh cm^-2, an energy density 106.17 Wh L^-1 sustained more than 350 cycles. The success ZnABL in modulating compartmentalizing zone provides option improvement anodes.

Язык: Английский

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Crystal Transformation Strategy in Hydrogen‐Bonded Organic Framework Solid‐State Electrolyte for Stable Zinc‐Ion Batteries

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 7, 2025

Abstract Solid‐state zinc ion batteries (ZIBs) hold great potential for sustainable and high‐safety reserves. However, the advancement of solid‐state ZIBs is constrained by shortage reasonable electrolytes (SSE) with abundant hopping sites, effective hydrogen evolution reaction (HER) inhibition, favorable interfacial compatibility. Herein, hydrogen‐bonded organic framework (HOF) CAM‐Ag Zn 2+ sites developed as SSE ZIBs. Taking advantage short‐distance conduction pathways crystal transformation through incorporating Ag−N coordinate bonds, achieves a significant ionic conductivity 1.14 × 10 −4 S cm −1 at room temperature superior transference number 0.72. An bonds network effectively inhibits initiation HER subsequent generation by‐products. Moreover, rapid kinetics facilitated inhibition dendrite growth, promoting uniform distribution. displays an extensive electrochemical stability range 0–2.66 V remarkable compatibility, enabling stable plating/stripping ≈1000 h 1 mA −2 . Consequently, SSE‐based achieve specific capacity 315 mAh g only 1.5% decrease in capacitance after 24 h. The proposed HOF‐based pathway advancing high‐performance

Язык: Английский

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Research progress and perspectives on rechargeable batteries

Chinese Chemical Letters, Год журнала: 2025, Номер unknown, С. 111185 - 111185

Опубликована: Апрель 1, 2025

Язык: Английский

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Advancements in Zinc Reversibility and Utilization for Practical Aqueous Zinc‐Ion Battery Applications

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 22, 2025

Abstract Aqueous zinc‐ion batteries (AZIBs) have become critical in driving the advancement of large‐scale energy storage systems due to their high specific capacity, safety, environmental friendliness, and low cost. However, fundamental challenges associated with Zn anodes, including dendrite growth, hydrogen evolution reaction, corrosion, zinc utilization, significantly hinder improvement cyclic stability density AZIBs. In light these challenges, considerable efforts been devoted exploring stable while a significant gap persists between current research advancements practical working conditions. Therefore, this review first reveals detailed mechanisms formation, as well influence utilization on AZIB systems. addition, recent various modification strategies for improving anodes are summarized, corresponding investigated. Finally, key factors advancing development application AZIBs clarified, goal bridging status future demands.

Язык: Английский

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