Enhancing zinc-ion battery performance by modifying the separator and electrolyte integrally with a supramolecular hydrogel

Chemical Engineering Journal, Год журнала: 2025, Номер 515, С. 163454 - 163454

Опубликована: Май 6, 2025

Язык: Английский

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Ternary Gel Electrolyte Enabling Wide‐Temperature and High‐Rate Performance in Aqueous Zinc‐Ion Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 7, 2025

Abstract Aqueous zinc‐ion batteries (AZIBs) offer significant potential for grid‐scale energy storage due to their cost‐effectiveness, safety, and eco‐friendliness. However, interfacial instability parasitic reactions under extreme temperatures (−20 60 °C) severely degrade cyclability. To address these limitations, a ternary copolymer gel electrolyte (PAM‐T‐S) is developed through copolymerization of acrylamide (AM) with [2‐(methacryloyloxy)ethyl]dimethyl(3‐sulfopropyl)ammonium betaine (SPE) thymine (Thy), forming multidimensional crosslinked network. Thy immobilizes free water molecules suppress activity, while SPE establishes rapid Zn 2+ transport pathways, boosting ionic conductivity. Synergistically, reconstruct the solvation sheath induce hybrid organic–inorganic solid interphase (SEI) via preferential adsorption decomposition, effectively inhibiting dendrite growth side reactions. Consequently, Zn||Zn symmetric cells PAM‐T‐S achieve long lifespans 3200 h at 1 mA cm −2 /1 mAh 1000 20 , along exceptional wide‐temperature performance (3000 −20 °C 820 °C, ). The Zn||VO 2 full cell retains 87.8% capacity after 2000 cycles 5C, highlighting its high‐rate durability. This multifunctional hydrogel design advances AZIBs toward reliable operation across broad temperature ranges, providing scalable strategy next‐generation systems.

Язык: Английский

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Chaotropic-anion Assisted Water-in-salt Electrolyte with Pseudo-solid Enables the Stability of MS Electrode and Operation under -40∼60℃

Electrochimica Acta, Год журнала: 2025, Номер unknown, С. 146364 - 146364

Опубликована: Май 1, 2025

Язык: Английский

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Suppression of extensive ice formation in hydrogel electrolytes enabling low-temperature aqueous Zn batteries

Journal of Materials Chemistry A, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

We designed a PVA-0.5SL hydrogel electrolyte with SL–Zn(ClO 4 ) 2 clusters that disrupt the H-bonding network, enabling low-temperature performance in aqueous Zn batteries.

Язык: Английский

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Aspartame Endowed ZnO-Based Self-Healing Solid Electrolyte Interface Film for Long-Cycling and Wide-Temperature Aqueous Zn-Ion Batteries

Nano-Micro Letters, Год журнала: 2025, Номер 17(1)

Опубликована: Май 12, 2025

Abstract Metallic Zn anodes suffer from hydrogen evolution and dendritic deposition in aqueous electrolytes, resulting low Coulombic efficiency poor cyclic stability for Zn-ion batteries (AZIBs). Constructing stable solid electrolyte interphase (SEI) with strong affinity exclusion of water corrosion metal is a promising strategy to tackle these challenges. In this study, we develop self-healing ZnO-based SEI film on the electrode surface by employing an aspartame (APM) as versatile additive. The hydrophobic nature APM can facilitate dynamic during plating/stripping process. Benefiting superior protection effect SEI, Zn║Cu cells possess average coulombic more than 99.59% over 1,000 cycles even at current density 1 mA cm −2 − mAh . Furthermore, Zn║NH 4 + -V 2 O 5 full display large specific capacity 150 g −1 high retention 77.8% after 1,750 cycles. addition, Zn║Zn cell delivers temperature adaptability wide-temperature range 40 °C under DOD 85.2%. enhanced capability durability originate formation enabled multifunctional additives mediating both suppression interfacial stabilization. This work presents inspired straightforward approach promote dendrite-free rechargeable AZIBs energy storage system.

Язык: Английский

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Dynamic Cross‐Linking Network Construction of Flexible Hydrogel Electrolyte Enabling Dendrite‐Free Zinc Anode

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 13, 2025

Abstract Aqueous zinc‐ion batteries (AZIBs) are highly promising for flexible electronics and advanced energy storage due to their eco‐efficiency, safety, low cost. However, practical application is limited by severe zinc dendrite growth, side reactions, mechanical instability associated with conventional electrolytes. Herein, a novel chondroitin sulfate‐functionalized polyacrylamide (PAM‐CS) hydrogel electrolyte address these challenges presented. The PAM‐CS integrates multiple functional groups, including hydroxyl (─OH), strongly electronegative sulfonic acid (─SO 3 − ), carboxylic (─COO ) which form hydrogen bonds free water molecules reduce activity suppress reactions. Furthermore, the groups ─COO construct dynamic coordination networks strong electrostatic interactions, enable fast Zn 2 ⁺ migration promote uniform deposition. As result, Zn||PAM‐CS||Zn symmetric cell demonstrates stable cycling over 1200 h at 1 mA cm −2 /1 mAh , while Zn||PAM‐CS||NH 4 V O 10 full exhibits an outstanding rate performance specific capacity of 87 g −1 high current density 5 A . Additionally, pouch battery using robust under stress, bending, puncture, cutting, showcasing its potential wearable electronics.

Язык: Английский

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Progress and challenges of zinc ion capacitors: From basic principles to performance optimization strategies

Chemical Engineering Journal, Год журнала: 2025, Номер 516, С. 163974 - 163974

Опубликована: Май 20, 2025

Язык: Английский

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