Recent advances in zinc-ion dehydration strategies for optimized Zn–metal batteries

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(15), P. 7742 - 7783

Published: Jan. 1, 2024

Aqueous Zn-metal batteries have attracted increasing interest for large-scale energy storage owing to their outstanding merits in terms of safety, cost and production. However, they constantly suffer from inadequate density poor cycling stability due the presence zinc ions fully hydrated solvation state. Thus, designing dehydrated structure can effectively address current drawbacks aqueous batteries. In this case, considering lack studies focused on strategies dehydration ions, herein, we present a systematic comprehensive review deepen understanding zinc-ion regulation. Two fundamental design principles component regulation pre-desolvation are summarized environment formation interfacial desolvation behavior. Subsequently, specific strategy based distinct carefully discussed, including preparation methods, working mechanisms, analysis approaches performance improvements. Finally, general summary issues addressed using strategies, four critical aspects promote presented as an outlook, involving updating (de)solvation theories, revealing evolution, enhancing techniques developing functional materials. We believe that will not only stimulate more creativity optimizing electrolytes but also provide valuable insights into other battery systems.

Language: Английский

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A Five Micron Thick Aramid Nanofiber Separator Enables Highly Reversible Zn Anode for Energy‐Dense Aqueous Zinc‐Ion Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(39)

Published: July 15, 2024

Abstract The rampant dendrites growth caused by uncontrolled deposition of Zn 2+ ions at metal anode poses a significant obstacle to the practical applications aqueous zinc‐ion batteries (ZIBs). Herein, an ultrathin (5 µm) aramid nanofiber (ANF) separator is reported enhance stability and ZIB energy density. Through systematic experimental studies DFT simulations, it demonstrated that ANF with unique surface polarity can modify solvation configuration, facilitate desolvation, regulate orientation ions. Consequently, demonstrates 85‐fold increase in running time beyond 850 h compared conventional glass fiber 5 mA cm −2 /2.5 mAh . Even under harsh depth discharge conditions 50% 80%, anodes still sustain extended cycling periods over 475 200 h, respectively. As pairing this thin high‐areal‐capacity Mn 2.5 V 10 O 24 ∙5.9H 2 cathode low negative capacity/positive capacity ratio (2.64) full cell, superior gravimetric/volumetric density (129.2 Wh kg −1 /142.5 L ) achieved, far surpassing majority counterparts literature. This work offers promising for promoting utilization energy‐dense ZIBs.

Language: Английский

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In Situ Construction of Bionic Self‐Recognition Layer for High‐Performance Zinc–Iodine Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 20, 2024

Abstract Aqueous Zinc–Iodine (Zn–I 2 ) batteries are promising candidates as energy storage system because of their high safety and low cost, but application is hindered by the dendrite growth, hydrogen evolution reaction (HER) corrosion, shuttle self‐discharge effect I 3 − at electrode/electrolyte interface. Inspired self‐recognition mechanism Zn supplement for human body, a layer (SR) in situ constructed on surface through coordination chondroitin sulfate (CHS) molecules with 2+ ions metal, which can induce uniform deposition via , suppress HER corrosion physical shielding, well restrain electrostatic repulsion. The SR affords highly reversible plating/stripping 9000 h. Remarkably, Zn–I full achieve long cycling‐life 16 000 cycles, verified pouch cell stable charge/discharge capacity ≈130 mAh g −1 200 cycles. This bionic methodology opens novel avenues to design optimal interface high‐performance batteries.

Language: Английский

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Superelastic hydrogel electrolyte incorporating helical protein molecules as zinc ion transport pathways to enhance cycling stability of zinc metal batteries

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

A superelastic, high ionic conductivity and environment-friendly hydrogel electrolyte is developed based on the unique advantages of α-helical proteins.

Language: Английский

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Electro‐Ionic‐Field Regulation through Dipole Molecule Layer toward Dendrite‐Free Zinc Anode

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 20, 2024

Abstract Zinc metal is a high‐capacity and cost‐effective anode material for aqueous zinc‐ion batteries, but its development impeded by dendrite growth interfacial side reactions. In this study, unique dipole molecule (DPM) layer constructed on zinc surface via an in situ etching‐growth strategy to regulate the electric field ion distribution. Theoretical calculations experiments confirm that asymmetrical charge distribution within DPM can significantly remodel of Zn surface. The zincophilic accelerates migration ions through ordered channels. Electro‐ionic regulation achieves dendrite‐free deposition reduces formation byproducts. DPM‐Zn symmetrical cells exhibit ultralow voltage hysteresis (≈ 24.2 mV), highly reversible plating/stripping behavior, stable cycling over 1700 h at 1 mA cm −2 . DPM‐Zn||MnO 2 full exhibited higher specific capacity cycle stability than bare anode. This work verifies feasibility electro‐ionic‐field synergistic robust anodes provides new insights into interface design anodes.

Language: Английский

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Unveiling the Descriptor of Parasitic Reactions of Zinc Anode: A Comparative Study of Trace Pyridinesulfonic Acid‐Based Additives in Aqueous Electrolyte

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(34)

Published: June 18, 2024

Abstract Understanding and controlling parasitic reactions on the Zn metal anode (ZMA) surface is essential to enhance energy capabilities of aqueous zinc‐ion batteries (ZIBs). However, accurate regulation scheme often obscured due lack fundamental understanding concerning ZMA/electrolyte interface. Herein, descriptor interfacial revealed through a systematic comparative study three model trace adsorption‐type pyridinesulfonic acid‐based additives with structural variations. Using in situ spectroscopies coupled density functional theory calculations, direct spectroscopic evidence H 2 O evolution during 2+ deposition process obtained. It proposed that, beyond traditional cognitions, distance between solvated Zn(H O) 6 ZMA highly dictates stability ZMAs. Consequently, 3‐Pyridinesulfonic acid most effective capacity drive away from surface, enables robust cycle life over 420 h for Zn||Zn symmetric cell at 10 mA cm −2 /10 mAh (depth discharge 45%), high Coulombic efficiency 99.78% an extended cycling 1500 cycles Zn//NH 4 V full battery. The work sheds light underlying mechanism provides insights into design better ZIBs.

Language: Английский

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Functionalized Quasi‐Solid‐State Electrolytes in Aqueous Zn‐Ion Batteries for Flexible Devices: Challenges and Strategies

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 28, 2024

Abstract The rapid development of wearable and intelligent flexible devices has posed strict requirements for power sources, including excellent mechanical strength, inherent safety, high energy density, eco‐friendliness. Zn‐ion batteries with aqueous quasi‐solid‐state electrolytes (AQSSEs) various functional groups that contain electronegative atoms (O/N/F) tunable electron accumulation states are considered as a promising candidate to the tremendous progress been achieved in this prospering area. Herein, review proposes comprehensive summary recent achievements using AQSSE by focusing on significance different groups. fundamentals challenges ZIBs introduced from chemical view first place. Then, mechanism behind stabilization functionalized is summarized explained detail. Then regarding enhanced electrochemical stability classified based polymer chain. advanced characterization methods briefly following sections. Last but not least, current future perspectives area provided authors' point view.

Language: Английский

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Silicon anodes in lithium-ion batteries: A deep dive into research trends and global collaborations

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 111, P. 115334 - 115334

Published: Jan. 18, 2025

Language: Английский

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Resolving the Zincophilicity‐Desolvation Dilemma of Electrolyte Additives via Molecular Engineering for Achieving High‐Rate Zinc Anodes with Minimized Polarization

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

Published: Feb. 28, 2025

Abstract Zincophilic additives have been widely applied to stabilize Zn metal anodes owing their efficacy in regulating 2+ diffusion. However, high zincophilicity causes elevated desolvation barriers, contributing increased polarization and reduced stability, particularly under high‐current conditions. Herein, a novel molecular engineering approach is proposed that integrates steric hindrance H‐bond interactions promote the of zincophilic additives, thereby achieving high‐rate with minimized polarization. As proof‐of‐concept, N,N‐di‐(2‐picolyl)ethylenediamine (NDPA), additive comprising potent chelating sites polar amino tail group designed. NDPA boasts four solvation sites, which not only contribute exceptional zincophilicity, effectively diffusion but also exhibit significant hindrance, reducing number H₂O molecules, lowering dehydration energy. Additionally, NDPA's free groups form H‐bonds facilitating dissociation coordinated additives. Consequently, at current density 20 mA cm −2 , addition Zn||Zn symmetric cell improves lifespan from 37 h over 2000 reduces voltage 137 82 mV. This work presents strategy overcome zincophilicity‐desolvation dilemma electrolyte for developing durable zinc anodes.

Language: Английский

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A Multifunctional Binder for Current‐Collector‐Free Zn Powder Anodes

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

Published: March 25, 2025

Compared with commonly used Zn foil anodes, powder (ZP) anodes offer superior versatility and processability. However, in aqueous electrolytes, dendrite growth side reactions, such as corrosion hydrogen evolution, become more severe ZP than those because of the rough surfaces high surface areas ZP, leading to poor reversibility limitations high-loading mass cathodes. In this study, a diisocyanate-polytetrahydrofuran-dihydrazide polymer (DDP) binder is developed, inspired by protein structures. The strong Zn2+ adsorption capability effectively regulates flux, while its unique hydrogen-bond arrays facilitate formation free-standing anode inhibit reactions. exhibits mechanical performance, providing electrodes excellent resistance various stresses, including tensile, nanoindentation, scratch, dynamic bending tests. symmetric cells achieve stable cycling at capacities 2 5 mAh cm-2. addition, DDP functions an iodine cathode, mitigating polyiodide shuttle effect. fabricated ZP/DDP||I2/DDP full demonstrate rate stability, even under conditions. This study presents novel approach for preparing cathodes, offering promising strategy large-scale applications.

Language: Английский

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