Polymer gels for aqueous metal batteries

Progress in Materials Science, Год журнала: 2025, Номер unknown, С. 101426 - 101426

Опубликована: Янв. 1, 2025

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Tunable N-doped Carbon Dots/SnO2 Interface as a Stable Artificial Solid Electrolyte Interphase for High-Performance Aqueous Zinc-Ion Batteries

Journal of Alloys and Compounds, Год журнала: 2025, Номер 1013, С. 178521 - 178521

Опубликована: Янв. 1, 2025

Язык: Английский

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Nano‐Metal–Organic Frameworks Isolated in Mesoporous Structures

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 23, 2025

Abstract As an alternative to bulk counterparts, metal–organic framework (MOF) nanoparticles isolated within conductive mesoporous carbon matrices are of increasing interest for electrochemical applications. Although promising, a “clean” surface is generally associated with poor compatibility and weak interactions metal/ligand precursors, which leads the growth MOFs inhomogeneous particle sizes on outer pore walls. Here, general methodology in situ synthesis eight nanoMOF composites mesochannels high dispersity stability reported. Mesoporous polydopamine (mesoPDA)‐F127 nanospheres unique chemistry, e.g., nanoconfined spaces, catechol functional groups, pyrrolic N doping, hydrophilic PEO blocks, found be suitable molecular platform. Sliced cross‐sectional TEM, HAADF‐STEM, corresponding EDS elemental mapping, as well nitrogen adsorption characterizations, utilized visualize process ZIF‐8 nanoparticles. These careful analyses provides direct evidence that highly dispersed exclusively located inside internal mesochannels. After moderate carbonization mesoPDA‐F127/ZIF‐8 nanocomposites, prototype carbon‐isolated nanostructure achieved, can regulate Zn 2+ plating electrochemistry toward stable aqueous batteries. This first report complete impregnation even dispersion nanoscale interior channels carbons.

Язык: Английский

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High-performance supercapacitors based on NiMn layered double hydroxides/Ni3S2 nanocomposite

Journal of Power Sources, Год журнала: 2025, Номер 634, С. 236465 - 236465

Опубликована: Фев. 16, 2025

Язык: Английский

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Kinetics Compensation Mechanism in Cosolvent Electrolyte Strategy for Aqueous Zinc Batteries

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

Опубликована: Март 3, 2025

Aqueous zinc batteries are the ideal choices to realize intrinsically safe energy storage, but parasitic side reactions make it difficult achieve in practice. Although cosolvent electrolyte effectively inhibits dendrites and mitigates unexpected reactions, brings inevitable kinetics losses. Here, we systematically investigate compare interactions between Zn2+ various oxygen-coordinated cosolvents under pure aqueous environments OTf- mixed solvent containing different cosolvents. And differences effect of on solvation structure ion migration quantitatively analyzed summarized. On this basis, propose a new compensation mechanism strategy that can compensate losses due introduction by weakening anion-cation pair interaction increasing transfer number. Theory experiments both demonstrate while improving electrochemical performance. This work provides comprehensive deep understanding designing electrolytes with superior More importantly, proposed be applied other similar properties battery systems.

Язык: Английский

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Sustainable Release of Zincophilic Metal Ions from Separator Proactively Drives Interfacial Stabilization for Durable Zinc Anode

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 7, 2025

Abstract One of the important challenges in advancing aqueous zinc‐ion batteries is separator, which crucial for promoting stable electrode‐electrolyte interface and energy density battery. Herein, this study introduces a metal ion‐activated air‐laid paper (ALP Act) as an alternative traditional glass fiber separators with big thickness weight. Notably, sustainable release ions facilitates situ engineering, thus creating surface layer high zinc affinity to promote uniform migration deposition ions. By continuously adjusting interface, behaviors dendrite growth side reactions are effectively suppressed. Consequently, ALP Act continuous metal‐ion function enables anode attain 21‐fold increase running life beyond 3700 h compared conventional separator at 1 mA cm −2 l mAh . The Zn||Cu battery also achieves remarkable Coulombic efficiency 99.18% 2000 (1 /1 ). assembled Zn||NVO exhibits lifespan 3000 cycles charge discharge 3 A g −1 This research offers new avenue achieve low‐cost, long‐lasting, energy‐dense batteries.

Язык: Английский

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Engineering low-cost multifunctional carbon interface layer with hydrophobic negative surface and oriented zinc deposition dynamics for dendrite-free zinc ion batteries

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 690, С. 137338 - 137338

Опубликована: Март 15, 2025

Язык: Английский

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Hierarchical Engineering of Single-Crystalline Mesoporous Metal–Organic Frameworks with Hollow Structures

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

Опубликована: Апрель 21, 2025

Although the superiority of hierarchical structure has driven extensive demand for applications, establishing hierarchy in a long-range-ordered single crystal remains formidable challenge due to inherent competition and contradiction between crystallinity controllable structure. Herein, we demonstrate growth dissociation kinetics cooperative strategy synthesizing family hollow single-crystalline mesoporous metal-organic frameworks (meso-MOFs) with structures. The approach employs dual-template method, integrating both hard soft templates. By adjusting HCl/CH3COOH ratio, reaction system's pH can be tuned regulate acid-sensitive seeds serving as templates formation structure, while simultaneously modifying concentration dual acids control meso-MOF shells. maintaining achieving well-defined effectively balanced. Driven by two interfacial kinetics, successfully obtained octahedral nanoparticles that not only exhibit precisely size (∼81-1120 nm) tunable wall thickness (∼28.6-61.3 but also retain their single-crystal integrity. Specifically, governed structures, shells ensured uniform coverage structural Based on this strategy, further developed series novel meso-MOFs nanostructures, including open-capsule meso-MOFs, 2D interlayer-structured macro-meso-micro trimodal porous MOFs, so on.

Язык: Английский

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Synthesis of Sulfonyl Two-Dimensional Covalent Organic Frameworks for Supercapacitor Applications

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Фев. 4, 2025

Covalent organic frameworks (COFs) are attracting more attention for energy storage applications. COFs possess unique structural properties, such as highly ordered pore structures, abundant functionalization sites, and tunable chemical making them ideal candidates the development of novel materials. In this work, we synthesized sulfonyl two-dimensional (2D) covalent (SLD-COFs) using 4,4'-sulfonyldiphenylamine (SLD). SLD-COFs have a remarkable conjugated structure, which includes imine groups forming large π-bonds, structure can provide consecutive electron conduction paths, enables SLD-COF to transfer charges efficiently, thus improving electrical conductivity. Additionally, introduce redox-active participate in redox process during electrochemical reactions generate pseudocapacitive effect. For current 0.5 A/g, specific capacitance material was 31.5 F/g an acidic electrolyte 41.7 alkaline electrolyte. The flexibility good properties make potentially essential component Meanwhile, retention reaches 78.3% after 1000 GCD cycles at density 1 indicates its cycling stability.

Язык: Английский

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Spatial and Electrostatic Dual‐Confinement in Hierarchical Hollow Bi‐Bi₂O₃@Carbon Nanofibers for Dendrite Suppression and Side Reaction Mitigation in Aqueous Zinc‐Ion Batteries

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 7, 2025

Abstract The widespread application of aqueous zinc‐ion batteries (AZIBs) is hindered by anode dendrite formation and side reactions, reducing cycling life performance. This study introduces Bi‐Bi₂O₃‐loaded carbon nanofibers (Bi‐Bi₂O₃@CNF) with hierarchical hollow structures surface grooves fabricated via electrospinning, thermal treatment, in situ growth. Experimental characterization density functional theory reveal that the high area fibrous network Bi‐Bi₂O₃@CNF enhance electron transport electrolyte distribution, effectively ohmic resistance concentration polarization. “Spatial Effect” provides ample space for uniform Zn deposition. Additionally, situ‐grown Bi‐Bi₂O₃, pyridinic nitrogen, pyrrolic C─O─Bi bonds induce strong zinc affinity electronegativity, generating an “Electrostatic Confinement amplifies “spatial effect” into a “Dual‐Confinement Effect.” synergy ensures deposition, suppresses dendrites mitigates Compared to pure anodes, reduces polarization overpotential 17.6%, increases hydrogen evolution 11.52%, maintains Coulombic efficiency 98.8% over 200 h. In full cells, Zn@Bi‐Bi₂O₃@CNF//MnO₂ achieves 73.0% capacity retention after 1000 cycles at mA g⁻¹. work promising strategy high‐efficiency, durable, safe AZIBs offers valuable insights design advanced energy storage materials.

Язык: Английский

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