Covalent Organic Framework with 3D Ordered Channel and Multi-Functional Groups Endows Zn Anode with Superior Stability

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

Published: Jan. 4, 2024

Abstract Achieving a highly robust zinc (Zn) metal anode is extremely important for improving the performance of aqueous Zn-ion batteries (AZIBs) advancing “carbon neutrality” society, which hampered by uncontrollable growth Zn dendrite and severe side reactions including hydrogen evolution reaction, corrosion, passivation, etc. Herein, an interlayer containing fluorinated zincophilic covalent organic framework with sulfonic acid groups (COF-S-F) developed on (Zn@COF-S-F) as artificial solid electrolyte interface (SEI). Sulfonic group (− SO 3 H) in COF-S-F can effectively ameliorate desolvation process hydrated ions, three-dimensional channel fluoride (-F) provide interconnected channels favorable transport ions ion-confinement effects, endowing Zn@COF-S-F dendrite-free morphology suppressed reactions. Consequently, symmetric cell stably cycle 1,000 h low average hysteresis voltage (50.5 mV) at current density 1.5 mA cm −2 . Zn@COF-S-F|MnO 2 delivers discharge specific capacity 206.8 mAh g −1 1.2 A after 800 cycles high-capacity retention (87.9%). Enlightening, building SEI metallic surface targeted design has been proved effective strategy to foster practical application high-performance AZIBs.

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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Synergistic Modulation of In‐Situ Hybrid Interface Construction and pH Buffering Enabled Ultra‐Stable Zinc Anode at High Current Density and Areal Capacity

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

Published: Sept. 25, 2023

In aqueous electrolytes, the uncontrollable interfacial evolution caused by a series of factors such as pH variation and unregulated Zn2+ diffusion would usually result in rapid failure metallic Zn anode. Considering high correlation among various triggers that induce anode deterioration, synergistic modulation strategy based on electrolyte modification is developed. Benefitting from unique buffer mechanism additive its capability to situ construct zincophilic solid interface, this effect can comprehensively manage thermodynamic kinetic properties inhibiting parasitic side reactions, accelerating de-solvation hydrated , regulating behavior realize uniform deposition. Thus, modified achieve an impressive lifespan at ultra-high current density areal capacity, operating stably for 609 209 hours 20 mA cm-2 mAh 40 respectively. Based exceptional performance, loading Zn||NH4 V4 O10 batteries excellent cycle stability rate performance. Compared with those previously reported single strategies, concept expected provide new approach highly stable zinc-ion batteries.

Language: Английский

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A Review of Rechargeable Zinc–Air Batteries: Recent Progress and Future Perspectives

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

Published: Feb. 29, 2024

Zinc-air batteries (ZABs) are gaining attention as an ideal option for various applications requiring high-capacity batteries, such portable electronics, electric vehicles, and renewable energy storage. ZABs offer advantages low environmental impact, enhanced safety compared to Li-ion cost-effectiveness due the abundance of zinc. However, early research faced challenges parasitic reactions at zinc anode slow oxygen redox kinetics. Recent advancements in restructuring anode, utilizing alternative electrolytes, developing bifunctional catalysts have significantly improved ZABs. Scientists achieved battery reversibility over thousands cycles, introduced new efficiency records surpassing 70%. Despite these achievements, there related lower power density, shorter lifespan, air electrode corrosion leading performance degradation. This review paper discusses different configurations, reaction mechanisms electrically mechanically rechargeable ZABs, proposes remedies enhance overall performance. The also explores recent advancements, applications, future prospects electrically/mechanically

Language: Английский

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Anti‐Fatigue Hydrogel Electrolyte for All‐Flexible Zn‐Ion Batteries

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(36)

Published: May 27, 2023

Hydrogel electrolytes are widely explored in Zn metal batteries for application wearable electronics. While extensive studies have been conducted on optimizing the chemical structure and boosting tensile elasticity, mechanical stability of hydrogel under repeated deformation is largely overlooked, leading to unsatisfactory performance at large cycling capacity. This work systematically analyzes compressive fatigue-resistance properties electrolyte, revealing critical roles salt copolymer matrix crack initiation propagation. It shows that, premise homogeneous deposition, an improved anti-fatigue property essential achieve high-capacity anodes. The optimal Zn(ClO4 )2 -polyacrylamide/chitosan electrolyte (C-PAMCS) exhibits unprecedented lifespan 1500 h Zn//Zn cells a current density 10 mA cm-2 high areal capacity mAh . potential C-PAMCS exemplified all-flexible Zn-ion enabled by flexible collector consisting Ag nanowires embedded elastomer. study provides rationale engineering toward advanced battereis devices.

Language: Английский

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Unveiling The Mechanism of The Dendrite Nucleation and Growth in Aqueous Zinc Ion Batteries

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 14(9)

Published: Dec. 31, 2023

Abstract Aqueous zinc ion batteries (ZIBs) exhibit great potential for next‐generation energy storage devices. However, significant challenges exist, including the uncontrollable formation of Zn dendrite and side reactions during stripping plating. The mechanism nucleation has yet to be fully understood. In this work, first principles simulations are used investigate process. unintentionally adsorbed O 2− OH − ions inducing factors growth on (0001) plane due significantly increased diffusion barriers. A top‐down method is demonstrated suppress using delaminated V 2 CT x capture thanks reduced experimental results revealed suppressed growth, resulting in a layer‐by‐layer deposit/stripping Zn. Based electrochemical evaluations, ‐coated composite delivers high coulombic efficiency 99.3% at 1.0 mAh cm −2 . Furthermore, full cell achieves excellent cyclic performance 93.6% capacity retention after 2000 cycles 1 g −1 This strategy broad scalability can widely applied designing metallic anodes rechargeable batteries.

Language: Английский

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Interfacial Regulation via Anionic Surfactant Electrolyte Additive Promotes Stable (002)‐Textured Zinc Anodes at High Depth of Discharge

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(38)

Published: Aug. 22, 2023

Abstract Aqueous zinc‐ion batteries have been identified as a viable option for grid energy storage. However, their practical application is limited by the poor performances at high use rate of zinc. A suitable strategy to improve cycling stability depth discharge (DOD) realizing (002)‐textured Zn plating suppress dendrite growth and side reactions. Herein, novel electrolyte additive sodium 3‐mercapto‐1‐propanesulfonate (MPS) introduced regulate zinc/electrolyte interfacial structure. The MPS anions can form an adsorption layer on anode surface, which induces deposition in (002) direction indicated first‐principles calculations. Additionally, facilitate reduction barrier associated with zinc deposition. This modified interface effectively inhibits reactions, resulting remarkable lifespan Zn||Zn symmetric cells, exceeding 800 h DOD 50%, over 4500 1.0 mA cm −2 /1.0 mAh . Moreover, capacity full cells V 2 O 5 ·H or polyaniline cathodes substantially improved. pouch‐type Zn||V cell reveals 42 good retention 86.6% after 250 cycles, highlighting significant potential applications.

Language: Английский

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Constructing Solid Electrolyte Interphase for Aqueous Zinc Batteries

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(47)

Published: Aug. 19, 2023

Abstract Problems of zinc anode including dendrite and hydrogen evolution seriously degrade the performance batteries. Solid electrolyte interphase (SEI), which plays a key role in achieving high reversibility lithium aprotic organic solvent, is also beneficial to improvement aqueous electrolyte. However, various studies about for electrode quite fragmented, lack deep understanding on root causes or general design rules SEI construction. And water molecules with reactivity brings serious challenge effective Here, we reviewed brief development history batteries firstly, then summarized approaches construct Furthermore, formation mechanisms behind are systematically analyzed, together discussion components evaluation electrochemical types SEI. Meanwhile, between lab industrialization discussed.

Language: Английский

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Synergistic “Anchor-Capture” Enabled by Amino and Carboxyl for Constructing Robust Interface of Zn Anode

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: Aug. 28, 2023

Abstract While the rechargeable aqueous zinc-ion batteries (AZIBs) have been recognized as one of most viable for scale-up application, instability on Zn anode–electrolyte interface bottleneck further development dramatically. Herein, we utilize amino acid glycine (Gly) an electrolyte additive to stabilize interface. The unique interfacial chemistry is facilitated by synergistic “anchor-capture” effect polar groups in Gly molecule, manifested simultaneously coupling anchor surface anode and carboxyl capture 2+ local region. As such, this robust inhibits disordered migration , effectively suppresses both side reactions dendrite growth. reversibility achieves a significant improvement with average Coulombic efficiency 99.22% at 1 mA cm −2 0.5 mAh over 500 cycles. Even high utilization rate (depth discharge, DOD ) 68%, steady cycle life up 200 h obtained ultrathin foils (20 μm). superior capability long-term stability Zn–MnO 2 full cells prove effectiveness stabilizing anode. This work sheds light designing from specific roles AZIBs.

Language: Английский

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3D Artificial Array Interface Engineering Enabling Dendrite-Free Stable Zn Metal Anode

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: Jan. 17, 2023

The ripple effect induced by uncontrollable Zn deposition is considered as the Achilles heel for developing high-performance aqueous Zn-ion batteries. For this problem, work reports a design concept of 3D artificial array interface engineering to achieve volume stress elimination, preferred orientation growth and dendrite-free stable metal anode. mechanism MXene on modulating kinetics behavior atoms were firstly disclosed multi-scale level, including in-situ optical microscopy transient simulation at mesoscopic scale, Raman spectroscopy X-ray diffraction microscopic well density functional theory calculation atomic scale. As indicated electrochemical performance tests, such engineered electrode exhibits comprehensive enhancements not only in resistance corrosion hydrogen evolution, but also rate capability cyclic stability. High-rate (20 mA cm-2) durable cycle lifespan (1350 h 0.5 cm-2, 1500 1 cm-2 800 5 can be realized. Moreover, improvement (214.1 mAh g-1 obtained 10 A g-1) stability demonstrated case array@Zn/VO2 battery. Beyond previous 2D closed engineering, research offers unique open stabilize anode, controllable revealed expected deepen fundamental rechargeable batteries limited

Language: Английский

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