Comprehensive Review of Electrolyte Modification Strategies for Stabilizing Zn Metal Anodes

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(51)

Published: Aug. 24, 2023

Abstract In response to the need of sustainable development, there is an increasing demand for electrical energy storage, leading a stimulated pursuit advanced batteries. Aqueous zinc ion batteries (AZIBs) have attracted much attention due their low cost, high safety, and environmental friendliness. Despite great efforts made by researchers in designing developing high‐performance AZIBs, several challenges remain. Particularly Zn anode, growth dendrites occurance various side reactions significantly hinder advancement AZIBs. This review article aims discuss principles electrolyte's structure properties, faced AZIBs anodesm strategies improve battery performance through electrolyte modification systematic manner. conclusion, potential future directions aimed at enhancing stability anodes cathodes are proposed ensure that research geared toward achieving realistic targets commercializing

Language: Английский

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Design Strategies for Aqueous Zinc Metal Batteries with High Zinc Utilization: From Metal Anodes to Anode-Free Structures

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: Jan. 4, 2024

Aqueous zinc metal batteries (AZMBs) are promising candidates for next-generation energy storage due to the excellent safety, environmental friendliness, natural abundance, high theoretical specific capacity, and low redox potential of (Zn) metal. However, several issues such as dendrite formation, hydrogen evolution, corrosion, passivation Zn anodes cause irreversible loss active materials. To solve these issues, researchers often use large amounts excess ensure a continuous supply materials anodes. This leads ultralow utilization squanders density AZMBs. Herein, design strategies AZMBs with discussed in depth, from utilizing thinner foils constructing anode-free structures 100%, which provides comprehensive guidelines further research. Representative methods calculating depth discharge different first summarized. The reasonable modification foil anodes, current collectors pre-deposited Zn, aqueous (AF-AZMBs) improve then detailed. In particular, working mechanism AF-AZMBs is systematically introduced. Finally, challenges perspectives high-utilization presented.

Language: Английский

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Tetraphenylporphyrin‐based Chelating Ligand Additive as a Molecular Sieving Interfacial Barrier toward Durable Aqueous Zinc Metal Batteries

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(46)

Published: Sept. 29, 2023

The sustained water consumption and uncontrollable dendrite growth strongly hamper the practical applications of rechargeable zinc (Zn) metal batteries (ZMBs). Herein, for first time, we demonstrate that trace amount chelate ligand additive can serve as a "molecular sieve-like" interfacial barrier achieve highly efficient Zn plating/stripping. As verified by theoretical modeling experimental investigations, benzenesulfonic acid groups on molecular not only facilitates its solubility selective adsorption anode, but also effectively accelerates de-solvation kinetics Zn2+ . Meanwhile, central porphyrin ring expels free molecules from via chemical binding against hydrogen evolution, reversibly releases captured to endow dendrite-free deposition. By virtue this non-consumable additive, high average plating/stripping efficiency 99.7 % over 2100 cycles together with extended lifespan suppressed decomposition in Zn||MnO2 full battery were achieved, thus opening new avenue developing durable ZMBs.

Language: Английский

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Polymer Molecules Adsorption‐Induced Zincophilic‐Hydrophobic Protective Layer Enables Highly Stable Zn Metal Anodes

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(16)

Published: Jan. 5, 2024

Zn metal, as one of the most promising anode materials for aqueous batteries, suffers from uncontrollable dendrite growth and water-induced parasitic reactions, which drastically compromise its cycle life Coulombic efficiency (CE). Herein, a nonionic amphipathic additive Tween-20 (TW20) is proposed that bears both zincophilic hydrophobic units. The segment TW20 preferentially adsorbs on anode, while exposed electrolyte side, forming an electrolyte-facing layer shields active water molecules. Moreover, theoretical calculation experimental results reveal can induce preferential (002) plane by adsorbing other facets, enabling dendrite-free anodes. Benefitting these advantages, stability reversibility anodes are substantially improved, reflected stable cycling over 2500 h at 1.0 mA cm

Language: Английский

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Advanced electrolytes for high-performance aqueous zinc-ion batteries

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This review presents an comprehensive overview of various advanced aqueous electrolytes for zinc-ion batteries, including “water-in-salt” electrolytes, eutectic molecular crowding and hydrogel electrolytes.

Language: Английский

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A Temperature Self‐Adaptive Electrolyte for Wide‐Temperature Aqueous Zinc‐Ion Batteries

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(29)

Published: April 29, 2024

Abstract The advancement of aqueous zinc‐ion batteries (AZIBs) is often hampered by the dendritic zinc growth and parasitic side reactions between anode electrolyte, especially under extreme temperature conditions. This study unveils performance decay mechanism anodes in harsh environments, characterized “dead zinc” at low temperatures aggravated hydrogen evolution adverse by‐products elevated temperatures. To address these issues, a self‐adaptive electrolyte (TSAE), founded on competitive coordination principle co‐solvent anions, introduced. exhibits dynamic solvation capability, engendering an inorganic‐rich solid interface (SEI) while organic alkyl ether‐ carbonate‐containing SEI self‐adaptability significantly enhances across broad range. A Zn//Zn symmetrical cell, based TSAE, showcases reversible plating/stripping exceeding 16 800 h (>700 d) room 1 mA cm −2 mAh , setting record lifespan. Furthermore, TSAE enables stable operation full ultrawide range −35 to 75 °C. work illuminates pathway for optimizing AZIBs fine‐tuning interfacial chemistry.

Language: Английский

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A “Polymer‐in‐Salt” Solid Electrolyte Enabled by Fast Phase Transition Route for Stable Zn Batteries

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(2)

Published: Oct. 3, 2023

Abstract Solid polymer electrolyte‐based batteries show great promise because of their safe operating properties, wide voltage window and suitable flexibility. However, low ionic conductivity, cation transfer number, weak oxidation/reduction resistance mechanical strength limit implementation in Zn ion batteries. Here, w e developed a “polymer‐in‐salt” 2+ ‐conductive solid electrolyte (denoted as 70% salt‐SPE) constructed by simple fast phase transition method. The room‐temperature conductivity the number salt‐SPE reaches 1.6 mS cm −1 0.78, respectively. Meanwhile, ZnF2‐rich inorganic/organic hybrid interface is formed, stable 9.35 V. In consequence, Zn||Zn symmetric cell continuously cycles over 700 hours at current density 2 mA −2 Zn||Cu battery runs with Coulombic efficiency >99%. Zn||MnPBA full delivers discharge specific capacity 109 mAh g room temperature 190 60 °C. impressive cyclic stability 6000 retention 80% achieved, which originates from effectively optimized transport action dendrite‐free plating/stripping.

Language: Английский

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Gradient‐Structured and Robust Solid Electrolyte Interphase In Situ Formed by Hydrated Eutectic Electrolytes for High‐Performance Zinc Metal Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(8)

Published: Jan. 26, 2024

Abstract The mechanically and electrochemically stable ionically conducting solid electrolyte interphase (SEI) is important for the stabilization of metal anodes. Since SEIs are originally absent in aqueous zinc batteries (AZMBs), it very challenging to suppress water‐induced side reactions dendrite growth Zn anodes (ZMAs). Herein, a gradient‐structured robust gradient SEI, consisting B,O‐inner F,O‐exterior layer, situ formed by hydrated eutectic homogeneous reversible deposition, demonstrated. Moreover, molar ratio acetamide salt modulated prohibit water activity hydrolysis BF 4 − as well achieve high ionic conductivity owing regulation solvation sheath 2+ . Consequently, allows Zn||Zn symmetric cells cycling lifespan over 4400 h at 0.5 mA cm −2 Zn||PANI full deliver capacity retention 73.2% 4000 cycles 1 A g −1 demonstrate operation low temperatures. This work provides rational design corresponding dendrite‐free even under harsh conditions.

Language: Английский

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Weakly solvating aqueous-based electrolyte facilitated by a soft co-solvent for extreme temperature operations of zinc-ion batteries

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(13), P. 4569 - 4581

Published: Jan. 1, 2024

The weakly solvating electrolyte achieves optimized interface chemistry and good temperature adaptability for aqueous zinc ion batteries.

Language: Английский

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Rapidly Synthesized Single‐Ion Conductive Hydrogel Electrolyte for High‐Performance Quasi‐Solid‐State Zinc‐ion Batteries

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(45)

Published: Sept. 20, 2023

Single-ion conductive electrolytes can largely eliminate electrode polarization, reduce the proportion of anion migration and inhibit side reactions in batteries. However, they usually suffer from insufficient ion conductivity due to strong interaction between cations cationic receptors. Here we report an ultrafast light-responsive covalent organic frameworks (COF) with sulfonic acid groups modification as acrylamide polymerization initiator. Benefiting reduced electrostatic Zn2+ through solvation effects, as-prepared COF-based hydrogel electrolyte (TCOF-S-Gel) receives up 27.2 mS/cm transference number 0.89. In addition, sufficient hydrogen bonds endow single-ion TCOF-S-Gel have good water retention superb mechanical properties. The assembled Zn||TCOF-S-Gel||MnO2 full zinc-ion battery exhibits high discharge capacity (248 mAh/g at 1C), excellent rate capability (90 10C) superior cycling performance. These enviable results enlist instantaneously photocured be qualified large-scaled flexible high-performance quasi-solid-state

Language: Английский

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