Fabrication of a heterovalent dual-cation pre-embedded hydrated vanadium oxide cathode for high-performance zinc ion storage

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(20), С. 11883 - 11894

Опубликована: Янв. 1, 2024

Vanadium-based oxides are considered desirable cathode materials for aqueous zinc ion batteries owing to their high theoretical specific capacity and open crystal structure.

Язык: Английский

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Unraveling the Mechanisms of Aqueous Zinc Ion Batteries via First-Principles Calculations

ACS Energy Letters, Год журнала: 2024, Номер unknown, С. 4761 - 4784

Опубликована: Сен. 11, 2024

Язык: Английский

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K_0.39V₂O₅·0.52H₂O Nanostructures with Oxygen Vacancies as Cathodes for Aqueous Zinc-Ion Batteries

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

Опубликована: Янв. 9, 2025

Aqueous zinc-ion batteries (AZIBs) are considered a promising option for large-scale energy storage because of their low cost and high safety. However, the lack suitable cathode materials has limited development. Vanadium-based oxides have been widely studied due to layered crystal structures theoretical specific capacities. Nevertheless, they prone vanadium dissolution cycle life during cycling. Pre-embedding K+ in V2O5 by hydrothermal method increases layer spacing stabilizes structure. Oxygen vacancies introduced provide more sites Zn storage. The results show that K0.39V2O5·0.52H2O nanostructures exhibit stable cycling performance. capacity is 552 mAh g–1 at 0.1 A g–1, retention 90% 11,000 cycles 10 g–1. When electrolyte changed from Zn(CF3SO3)2 ZnSO4, rate 98% after 200 1 nearly 100% 2400 This study highlights potential ion doping oxygen defects modifying electrodes provides guide exploring working mechanisms aqueous batteries.

Язык: Английский

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Comprehensive crystallographic engineering for high-efficiency and durable zinc metal anodes

Progress in Materials Science, Год журнала: 2025, Номер unknown, С. 101453 - 101453

Опубликована: Фев. 1, 2025

Язык: Английский

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Tailoring the Solvation of Aqueous Zinc Electrolytes by Balancing Kosmotropic and Chaotropic Ions

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Фев. 6, 2025

Aqueous zinc (Zn) batteries (AZBs) have emerged as a highly promising concept for grid-scale electrochemical energy storage due to the prospects of high safety, low cost, and competitive density. However, commonly employed electrolytes, at ca. 0.5-2 M salt concentration, significantly limit cycling stability uncontrolled hydrogen evolution reaction (HER). This originates from plentiful access free water molecules that become hydrolyzed. As remedy, concentrated 10 m higher, been suggested by means altering local solvation, promoting Zn2+-anion rather than Zn2+-H2O coordination, but this renders viscosity electrolytes with reduced ion transport. Here, balancing combination kosmotropic chaotropic ions, specifically acetate (Ac) guanidinium (Gua), it is possible tailor their strong weak coordination water, respectively. strategy results in weakly solvated electrolyte improved transport properties alongside stabilization Zn metal anode. Furthermore, our also enhances cathode stability, rendering an overall increase battery lifetime performance. Hence, design can be applied development new generation AZBs.

Язык: Английский

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Interface engineering enabled by sodium dodecyl sulfonate surfactant for stable Zn metal batteries

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 669, С. 984 - 991

Опубликована: Май 10, 2024

Язык: Английский

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Interfacial chemistry in multivalent aqueous batteries: fundamentals, challenges, and advances

Chemical Society Reviews, Год журнала: 2024, Номер 53(18), С. 8980 - 9028

Опубликована: Янв. 1, 2024

As one of the most promising electrochemical energy storage systems, aqueous batteries are attracting great interest due to their advantages high safety, sustainability, and low costs when compared with commercial lithium-ion batteries, showing promise for grid-scale storage. This invited tutorial review aims provide universal design principles address critical challenges at electrode-electrolyte interfaces faced by various multivalent battery systems. Specifically, deposition regulation, ion flux homogenization, solvation chemistry modulation proposed as key tune inter-component interactions in corresponding interfacial strategies underlying working mechanisms illustrated. In end, we present a analysis on remaining obstacles necessitated overcome use under different practical conditions future prospects towards further advancement sustainable systems long durability.

Язык: Английский

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Promising Electrolyte Additive-Induced Multifunctional Alloy Interphase Enabling Stable Zinc Anodes for Aqueous Zinc-Ion Batteries

Energy & Fuels, Год журнала: 2024, Номер 38(13), С. 12212 - 12220

Опубликована: Июнь 19, 2024

Excessive dendrite formation and side reactions compromise the reversibility stability of zinc anodes, obstructing deployment aqueous zinc-ion batteries. An economical, yet effective solution involves deploying electrolyte additives for a solid interphase (SEI) on metal anodes. Managing to fabricate an optimal SEI via these remains challenging. Here, we introduce cost-effective copper sulfate additive, enabling creation multifunctional copper–zinc alloy SEI. The SEI's superior electrical conductivity, zincophilic sites, ample free space, elevated surface energy facilitate homogeneous Zn nucleation deposition, thereby expediting electrochemical kinetics mitigates formation. Additionally, uniform suppresses corrosion hydrogen evolution reaction, augmenting deposition/dissolution reversibility. Consequently, Zn||Zn symmetric cells with additive exhibiting remarkable cycling over 5000 h at 0.5 mA cm–2, extraordinary average Coulombic efficiency 99.4% lifespan 1600 stable voltage hysteresis 2 cm–2 cm–2. This study proposes suitable high-performance

Язык: Английский

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Superhydrophobic and Highly Flexible Artificial Solid Electrolyte Interphase Inspired by Lotus Effect Toward Highly Stable Zn Anode

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Авг. 6, 2024

Abstract Due to their cost‐effectiveness, high safety, and environmental friendliness, aqueous zinc‐ion batteries (AZIBs) are among the most promising technologies for next‐generation energy storage systems. Nonetheless, dendrite growth, hydrogen evolution, corrosion at zinc (Zn) anode severely hinder practical application. In this study, a combination of molecular self‐assembly engineering, squeegee coating, air spraying process is employed create superhydrophobic highly flexible artificial solid‐electrolyte‐interface layer on Zn (denoted as SFM/Zn). Self‐assembled monolayer triethoxy‐3‐aminopropylsilane optimizes 2+ migration kinetics. The interface, formed by polydimethylsiloxane (PDMS) trimethoxy(octadecyl)silane (OTS)‐modified nanosilicon dioxide particles, inhibits water‐related side reactions. Furthermore, PDMS serves dynamic adaptive interface anode, effectively alleviating “tip effect”. Consequently, SFM/Zn||SFM/Zn symmetrical cells enable reversible stable plating/stripping both ultralow current density (0.2 mA cm −2 ) ultrahigh (45 ). assembled Zn‐vanadium (SFM/Zn||NH 4 V O 10 cell deliver average Coulombic efficiency (nearly 100%) ultralong cycling stability (135.5 mAh g −1 after 500 cycles 5 A 173.2 1000 2 This innovative three‐layered strategy sheds new light designing durable high‐performance AZIBs.

Язык: Английский

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Rescuing zinc anode–electrolyte interface: mechanisms, theoretical simulations and in situ characterizations

Chemical Science, Год журнала: 2024, Номер 15(19), С. 7010 - 7033

Опубликована: Янв. 1, 2024

The research interest in aqueous zinc-ion batteries (AZIBs) has been surging due to the advantages of safety, abundance, and high electrochemical performance. However, some technique issues, such as dendrites, hydrogen evolution reaction, corrosion, severely prohibit development AZIBs practical utilizations. underlying mechanisms regarding performance deterioration structure degradation are too complex understand, especially when it comes zinc metal anode-electrolyte interface. Recently, theoretical simulations

Язык: Английский

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