Multifunctional Zincophilic Hydrogel Electrolyte with Abundant Hydrogen Bonds for Zinc-Ion Capacitors and Supercapacitors

ACS Nano, Год журнала: 2024, Номер 18(19), С. 12355 - 12366

Опубликована: Апрель 29, 2024

The new-generation flexible Zn-ion capacitors (ZICs) require multifunctionality and environmental adaptability for practical applications. This essentially means that hydrogel electrolytes are expected to possess superior mechanical properties, temperature resistance, tunable interface properties resist flexibility loss performance degradation over a wide operating temperatures range. Herein, multifunctional polyzwitterionic electrolyte (PAM/LA/PSBMA) with temperatures, excellent tensile ability, high water retention, self-adhesion is designed. Molecular dynamics simulations experimental results show polar functional groups (–COO–, –SO3–, –C═O, –NHCO−) in the can form abundant hydrogen bonds molecules, which destroy original (HBs) network between molecules have low freezing point. It also coordination Zn2+, so deposition of Zn2+ electric field homogenization effectively alleviates growth Zn dendrites. On this basis, constructed Zn//Zn cell be stably cycled 290 h at 10 mA cm–2 (1 cm–2). ZICs supercapacitor specific capacitance, energy density, good ionic conductivity, long cycling stability. study provides guidance on molecular design development integrated smart electronic devices environmentally adaptable, resistant drying, highly flexible.

Язык: Английский

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Constructing Lysozyme Protective Layer via Conformational Transition for Aqueous Zn Batteries

Advanced Materials, Год журнала: 2024, Номер 36(29)

Опубликована: Май 8, 2024

The practical applications for aqueous Zn ion batteries (ZIBs) are promising yet still impeded by the severe side reactions on metal. Here, a lysozyme protective layer (LPL) is prepared metal surface simple and facile self-adsorption strategy. LPL exhibits extremely strong adhesion to provide stable interface during long-term cycling. In addition, strategy triggered hydrophobicity-induced aggregation effect endows with gap-free compacted morphology which can reject free water effective reaction inhibition performance. More importantly, conformation transformed from α-helix β-sheet structure before formation, thus abundant functional groups exposed interact

Язык: Английский

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The Construction of Anion‐Induced Solvation Structures in Low‐concentration Electrolyte for Stable Zinc Anodes

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(15)

Опубликована: Фев. 14, 2024

Abstract Aqueous zinc‐ion batteries (ZIBs) are promising large‐scale energy storage devices because of their low cost and high safety. However, owing to the activity H 2 O molecules in electrolytes, hydrogen evolution reaction side reactions usually take place on Zn anodes. Herein, additive‐free PCA−Zn electrolyte with capacity suppressing free solvated was designed by selecting cationophilic solventophilic anions. In such electrolyte, contact ion‐pairs solvent‐shared were achieved even at concentration, where PCA − anions coordinate 2+ bond molecules. Simultaneously, also induce construction H‐bonds between them. Therefore, is effectively restrained. Furthermore, since possess a strong affinity metal Zn, they can adsorb anode surface protect from direct molecules, inhibiting occurrence water‐triggered reactions. As result, plating/stripping behavior anodes highly reversible coulombic efficiency reach 99.43 % electrolyte. To illustrate feasibility Zn||PANI full assembled based exhibited enhanced cycling performance.

Язык: Английский

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Improvements and Challenges of Hydrogel Polymer Electrolytes for Advanced Zinc Anodes in Aqueous Zinc-Ion Batteries

ACS Nano, Год журнала: 2024, Номер 18(33), С. 21779 - 21803

Опубликована: Авг. 12, 2024

Aqueous zinc-ion batteries (AZIBs) are widely regarded as desirable energy storage devices due to their inherent safety and low cost. Hydrogel polymer electrolytes (HPEs) cross-linked polymers filled with water zinc salts. They not only used in flexible but also represent an ideal electrolyte candidate for addressing the issues associated Zn anode, including dendrite formation side reactions. In HPEs, abundance of hydrophilic groups can form strong hydrogen bonds molecules, reducing activity inhibiting decomposition. At same time, special

Язык: Английский

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An integrated Janus hydrogel with different hydrophilicities and gradient pore structures for high-performance zinc-ion batteries

Energy & Environmental Science, Год журнала: 2024, Номер 17(12), С. 4126 - 4136

Опубликована: Янв. 1, 2024

A pioneering achievement is made in developing integrated Janus hydrogel electrolytes featuring gradient pores cross-section and varying hydrophilicities on surfaces. This novel enables Zn-ion batteries to exhibit excellent performance.

Язык: Английский

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Molecular Bridging Induced Anti‐salting‐out Effect Enabling High Ionic Conductive ZnSO4‐based Hydrogel for Quasi‐solid‐state Zinc Ion Batteries

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(44)

Опубликована: Июль 30, 2024

Abstract Hydrogel electrolytes (HEs) hold great promise in tackling severe issues emerging aqueous zinc‐ion batteries, but the prevalent salting‐out effect of kosmotropic salt causes low ionic conductivity and electrochemical instability. Herein, a subtle molecular bridging strategy is proposed to enhance compatibility between PVA ZnSO 4 from perspective hydrogen‐bonding microenvironment re‐construction. By introducing urea containing both an H‐bond acceptor donor, broken H‐bonds H 2 O, initiated by SO 2− ‐driven O polarization, could be re‐united via intense intermolecular hydrogen bonds, thus leading greatly increased carrying capacity . The urea‐modified PVA‐ZnSO HEs featuring high up 31.2 mS cm −1 successfully solves sluggish transport dilemma at solid‐solid interface. Moreover, organic solid‐electrolyte‐interphase can derived situ electro‐polymerization prohibit O‐involved side reactions, thereby prominently improving reversibility Zn chemistry. Consequently, anodes witness impressive lifespan extension 50 h 2200 0.1 mA −2 while Zn‐I full battery maintains remarkable Coulombic efficiency (>99.7 %) even after 8000 cycles. anti‐salting‐out this work provides insightful concept for addressing phase separation issue functional HEs.

Язык: Английский

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A Near‐Single‐Ion Conducting Protective Layer for Dendrite‐Free Zinc Metal Anodes

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 26, 2025

Abstract The instability of zinc metal anodes, including dendrite formation and corrosion, limits their application in aqueous zinc‐ion batteries (AZIBs). Here, a near‐single conducting (NSIC) protective layer that enables dendrite‐free Zn anodes by integrating 2 ⁺‐conducting polymer matrices with counter‐anion trapping agents is presented. Sulfonic acid groups, covalently bonded to polymeric backbones enhance ⁺ ion mobility while counter‐anions are immobilized amine‐functionalized metal‐organic frameworks embedded within the layer. This synergistic combination near single transport ( t = 0.91). NSIC extends sand's time promotes uniform deposition along (002) orientation, preventing formation. Consequently, full cells thin Zn@NSIC (14 µm) exhibit stable cycling performance over 5000 cycles at 5 A g⁻¹, low negative‐to‐positive areal capacity (NP) ratio 3.3 depth discharge exceeding 30%. Furthermore, also adapted for enlarged (80 cm ) large‐sized cells, delivering operation ≈300 mAh 1 g⁻¹. These results offer valuable insights into control layers, advancing development practical AZIBs high anode reversibility.

Язык: Английский

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Lean-water hydrogel electrolyte with improved ion conductivity for dendrite-free zinc-Ion batteries

Chemical Engineering Journal, Год журнала: 2024, Номер 490, С. 151524 - 151524

Опубликована: Апрель 22, 2024

Язык: Английский

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Mussel-inspired, hydrophobic association-regulated hydrogel electrolytes with super-adhesive and self-healing properties for durable and flexible zinc-ion batteries

Energy storage materials, Год журнала: 2024, Номер 70, С. 103523 - 103523

Опубликована: Май 29, 2024

Язык: Английский

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Critical design strategy of electrolyte engineering toward aqueous zinc-ion battery

Chemical Engineering Journal, Год журнала: 2024, Номер 497, С. 154541 - 154541

Опубликована: Авг. 3, 2024

Язык: Английский

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