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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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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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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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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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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Designing Copolymeric SEI Layer Based on Click Reaction toward Ultralow N/P Ratio and Long Cycle Life Zinc Ion Batteries

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 20, 2024

Abstract Balancing interfacial interactions is critical to the reversibility and cycle stability of Zn ion batteries, as severe chemical corrosion undesirable hydrogen evolution reaction (HER) are inevitable for anode in aqueous electrolytes during charge/discharge process. Herein, a multi‐functional copolymeric solid/electrolyte interface (SEI) layer, self‐assembling on based click between epoxy silane thioalcohol, employed eliminate these side reactions. The dense robust SEI layer can not only physically repel water from surface effectively inhibit HER but also facilitate desolvation 2+ accelerate kinetic Additionally, it regulate flux induce preferred plating with (002) crystallographic orientation, enabling dendrite‐free deposition. As result, stable long life ≈200 h at depth discharge (DoD) 60% achieved. Zn||V 2 O 5 full cell delivers high specific capacity 165.2 mAh g −1 after 600 cycles an ultralow N/P ratio (the negative electrode positive electrode) 2.5. construction this provides new pathway development practical batteries.

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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Bio-inspired biomass hydrogel interface with ion-selective responsive sieving mechanism for corrosion-resistant and dendrite-free zinc-iodine batteries

Energy storage materials, Год журнала: 2025, Номер unknown, С. 104113 - 104113

Опубликована: Фев. 1, 2025

Язык: Английский

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