Dehydroxylated Polyvinyl Alcohol Separator Enables Fast Kinetics in Zinc‐Metal Batteries

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 26, 2025

Abstract Separators are critical components of zinc‐metal batteries (ZMBs). Despite their high ionic conductivity and excellent electrolyte retention, the widely used glass fiber (GF) membranes suffer from poor mechanical stability cannot suppress dendrite growth, leading to rapid battery failure. Contrarily, polymer‐based separators offer superior strength facilitate more homogeneous zinc (Zn) deposition. However, they typically sluggish ion transport kinetics wettability by aqueous electrolytes, resulting in unsatisfactory electrochemical performance. Here a dehydroxylation strategy is proposed overcome above‐mentioned limitations for polyvinyl alcohol (PVA) separators. A dehydroxylated PVA‐based membrane (DHPVA) synthesized at relatively low temperature highly concentrated alkaline solution. Part hydroxyl groups removed and, as result, hydrogen bonding between PVA chains, which deemed responsible kinetics, minimized. At 20 °C, DHPVA reaches 12.5 mS cm −1 , almost 4 times higher than that PVA. Additionally, effectively promotes uniform Zn deposition, significantly extended cycle life reduced polarization, both a/symmetric (Cu/Zn Zn/Zn) full cells (Zn/NaV 3 O 8 ). This study provides new, effective, yet simple approach improve performance ZMBs.

Language: Английский

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Revealing the multifunctional nature of surfactant electrolyte additive in aqueous Zinc Ion batteries

Electrochimica Acta, Journal Year: 2025, Volume and Issue: 514, P. 145685 - 145685

Published: Jan. 11, 2025

Language: Английский

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Liquid Metals for Advanced Batteries: Recent Progress and Future Perspective

EcoMat, Journal Year: 2025, Volume and Issue: 7(2)

Published: Jan. 27, 2025

ABSTRACT The shift toward sustainable energy has increased the demand for efficient storage systems to complement renewable sources like solar and wind. While lithium‐ion batteries dominate market, challenges such as safety concerns limited density drive search new solutions. Liquid metals (LMs) have emerged promising materials advanced due their unique properties, including low melting points, high electrical conductivity, tunable surface tension, strong alloying tendency. Enabled by properties of LMs, four key scientific functions LMs in are highlighted: active materials, self‐healing, interface stabilization, conductivity enhancement. These applications can improve battery performance, safety, lifespan. This review also discusses current future opportunities using next‐generation systems. image

Language: Английский

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Facile synthesis of snowflake-like FeO(OH) with guiding agent for lithium-ion batteries and photocatalysis applications

Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: 59, P. 105965 - 105965

Published: Feb. 1, 2025

Language: Английский

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Uncovering the charge storage mechanism of anti-perovskite nitrides Co3InN cathode materials in alkaline aqueous electrolytes

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160310 - 160310

Published: Feb. 1, 2025

Language: Английский

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Layered (NH₄)_1.32Na_0.95V₆O₁₆·1.88H₂O Nanobelt as a High Performance Cathode Material for Aqueous Zinc-Ion Batteries

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 16, 2025

Language: Английский

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Interfacial structuring of vacancy-rich Bi2Te3/NiTe2 with substantial melioration on dual-ion storage property for aqueous zinc-based batteries

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

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A Water‐Repellent Ionic Liquid/MOF Protective Layer for Stable Zinc Anodes

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

Abstract Aqueous zinc‐ion batteries have emerged as promising candidates for large‐scale energy storage, but their cycle stability is limited by irreversible zinc anodes due to dendrite growth and undesired side reactions. Here, an artificial composite protective layer consisting of a Zn metal–organic framework (MOF) infiltrated with hydrophobic ionic liquid 1‐ethyl‐3‐methylimidazoline bis(trifluoromethyl sulfonyl) imide constructed on anodes. The unique porous structure the MOF enables uniform electric field distribution, effectively inducing plating stripping. Meanwhile, small amount can isolate direct contact between anode aqueous electrolyte, thereby inhibiting reactions including hydrogen evolution reaction. In addition, cations in act shielding suppress tip effect. Consequently, metal greatly improved. assembled symmetric cell able stably over 2600 h at 0.2 mA cm −2 /0.2 mAh 800 1 /1 , which also exhibits lower more stable overpotentials.

Language: Английский

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Anion Endowed High Dielectric Water-Deficient Interface towards Ultrastable Zn Metal Battery

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

To regulate interfacial reactions on Zn anode, it is the key to tune dielectric properties of interface via polarizability, coordination, and solubility anion.

Language: Английский

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Structural codes of organic electrode materials for rechargeable multivalent metal batteries

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This review explores the intrinsic connection between structural features of different organic electrode materials and their charge storage performance, aiming to unveil key design principles for molecules used in various multivalent metal battery applications.

Language: Английский

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