Urea Chelation of I⁺ for High-Voltage Aqueous Zinc–Iodine Batteries

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Янв. 7, 2025

The multielectron conversion electrochemistry of I–/I0/I+ enables high specific capacity and voltage in zinc–iodine batteries. Unfortunately, the I+ ions are thermodynamically unstable highly susceptible to hydrolysis. Current endeavors primarily focus on exploring interhalogen chemistry activate I0/I+ couple. However, practical working is below theoretical level. In this study, redox couple fully activated, efficiently stabilized by a chelation agent cost-effective urea conventional aqueous electrolyte. A record-high plateau 1.8 V vs Zn/Zn2+ has been realized. Theoretical calculations combined with spectroscopy studies electrochemical tests reveal that coordination between electron-deficient electron-rich O N atoms molecules favorable for inhibits self-disproportionation I+, which turn promotes rapid kinetics excellent reversibility I0/I+. Moreover, decreases water activity electrolyte forming hydrogen bonds further suppress hydrolysis I+. Accordingly, 419 mAh g–1 delivered at 1C, 147 retained after 10,000 cycles 5C. This work offers effective insights into formulating halogen-free electrolytes high-performance

Язык: Английский

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A Self-Phase Separated Electrolyte toward Durable and Rollover-Stable Zinc Metal Batteries

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Янв. 8, 2025

Aqueous zinc (Zn) metal batteries (ZMBs) have received great attention due to their safety and environmental friendliness. Although aqueous electrolytes facilitate fast kinetics in oxide cathodes, incompatibility with the Zn anodes triggers severe hydrogen evolution reaction (HER) dendrite growth. Herein, a self-phase separated electrolyte (SPSE) is proposed fulfill contradictory requirements of anode cathode ZMBs. Molecular modeling experimental investigations verify that hydrophobic fluorinated solvent moderate dielectric constant large Hildebrand parameter disparity relative water contributes spontaneous aqueous–nonaqueous phase separation within SPSE against stirring aging. In as-developed SPSE, nonaqueous effectively inhibits HER formation by synergistic effect regulated deposition protective solid interphase (SEI). Meanwhile, ensures ion insertion/extraction dynamics. Consequently, allows for Zn||Zn symmetrical cells 2500 h cycle life ultralow corrosion current (0.08 mA cm–2). Notably, Zn|SPSE|V2O5 full cell sustains over 3000 cycles negligible corrosion, pouch demonstrates remarkable operation stability repeated rollover. Our design concept paves promising path practical ZMBs combine long-term cyclability, enhanced safety, durability.

Язык: Английский

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An integrated design for high-energy, durable zinc–iodine batteries with ultra-high recycling efficiency

Energy & Environmental Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

This work presents a zinc–iodine battery featuring liquid–liquid biphasic electrolyte and an integrated cell structure, which facilitates iodine loading of 69.8 mg cm −2 , self-discharge rate 3.4% per month, ∼100% recycling efficiency.

Язык: Английский

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From Fundamentals to Practice: Electrolyte Strategies for Zinc‐Ion Batteries in Extreme Temperature

Carbon Neutralization, Год журнала: 2024, Номер 4(1)

Опубликована: Ноя. 24, 2024

ABSTRACT In the pursuit of advanced energy storage technologies that promote sustainable solutions, zinc‐ion batteries (ZIBs) have emerged as a promising alternative to lithium‐ion due their abundance, safety, and environmental advantages. However, failure mechanisms ZIBs under extreme temperatures are still not fully understood, presenting significant challenges development commercialization. Therefore, innovative strategies essential enhance adaptability temperature extremes. this review, we first explore thermodynamic kinetic aspects performance degradation temperatures, focusing on key factors such ion diffusion redox processes at electrode interfaces. We then comprehensively summarize discuss existing approaches for various electrolyte types, including aqueous, nonaqueous, solid state. Finally, highlight future prospects operating conditions. The insights presented in review expected accelerate advancement facilitate practical implementation large‐scale systems.

Язык: Английский

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Regulation of solvation structure and electrochemical performance optimization in Zn(NH2SO3)2-based electrolytes

Journal of Energy Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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Reforming Multifunctional Solid Electrolyte Interphase for High‐Performance Zn Anode Through a Nature‐Inspired Strategy

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 23, 2025

Abstract Aqueous Zn metal batteries (AZMBs) have appealing advantages, including good safety, low cost, and high volumetric energy density. However, serious parasitic reactions dendrite growth at anodes hinder practical applications of AZMBs. Here, a nature‐inspired strategy is proposed to improve using plant‐cell derivatives as additives for ZnSO 4 electrolytes. In the electrolyte, TEMPO (2,2,6,6‐tetramethylpiperidine‐1‐oxyl)‐oxidized cellulose nanofibers (TOCN) calcium lignosulfonate (CL) with specific functional groups modulate 2+ solvation structure. More importantly, they reform cell membrane/wall‐like layer mechanical strength selective transmission/plating on anode surface, which enables uniform deposition alleviates side reactions. As result, symmetric cells dual‐additive electrolyte exhibit highly reversible dendrite‐free stripping/plating behavior over 2000 500 h 2 mA cm −2 /1 mAh 10 /10 , respectively. Furthermore, Zn//NH V O full shows cycling stability 300 cycles negative/positive (N/P) ratio. A density 92.9 Wh kg −1 can be delivered limited metallic consumption, showing that has prospects use.

Язык: Английский

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Sulfonated Lignin Binder Blocks Active Iodine Dissolution and Polyiodide Shuttle Toward Durable Zinc‐Iodine Batteries

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 1, 2024

Abstract The issues of active iodine dissolution and polyiodide shuttle severely hinder the development zinc‐iodine batteries (ZIBs). Binder engineering is considered a valid strategy to kill two birds with one stone. Herein, sodium lignosulfonate (LS), an important derivative lignin, optimized as neotype binder for fabrication iodine‐loading cathode. Owing existence ‐SO 3 Na group, electrostatic potential LS molecule contains both negative positive regions, which prefer block behavior through repulsion effect, adsorb polyiodides attraction respectively. Meanwhile, holds more Gibbs free energies consecutive radical reaction, much stronger adsorption species, manifesting fast conversion reaction kinetics, effective inhibition behavior. As expected, ZIBs based on delivers high capacity 153.6 mAh g −1 after 400 cycles at 0.1 A , reversible 152.8 500 0.5 (50 °C), durable cycling stability 12000 5 implying excellent fixation ability binder. This work guides design special iodine‐based electrodes facilitates practical application ZIBs.

Язык: Английский

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Nickel silicate nanotubes modifying the surface of Zn anode tuning the uniform zinc deposition for high-performance Zn metal battery

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 686, С. 878 - 887

Опубликована: Фев. 4, 2025

Язык: Английский

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Sec-butanol as a bifunctional electrolyte additive to effectively improve electrochemical performance of V2O5//Zn battery

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 687, С. 691 - 700

Опубликована: Фев. 16, 2025

Язык: Английский

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Advances in manganese-based cathode electrodes for aqueous zinc-ion batteries

Frontiers in Energy, Год журнала: 2025, Номер unknown

Опубликована: Фев. 28, 2025

Язык: Английский

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