A decade of development in cathode-facing surface modified separators for high-performance Li-S batteries

Energy storage materials, Год журнала: 2024, Номер 72, С. 103682 - 103682

Опубликована: Июль 31, 2024

Язык: Английский

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Tailoring Multiple Interactions in Poly (Urethane‐Urea)‐Based Solid‐State Polymer Electrolytes for Long‐Term Cycling Lithium Metal Batteries

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 10, 2025

Abstract Polyethylene oxide (PEO)‐based solid polymer electrolytes (SPEs) are considered as one of the most promising candidates for next‐generation lithium metal batteries. However, their application is limited by poor electrode/electrolyte interfacial stability, low Li‐ions transference number, and weak mechanical strength. Herein, poly (urethane‐urea)‐based SPEs developed to enhance improve transport kinetics, provide superior properties. The (urethane‐urea) structure integrates abundant polar groups rigid conjugated moieties, which facilitate interactions with anions salt in SPEs, promoting number supporting formation a LiF‐rich electrolyte interphase (SEI) guide uniform deposition suppress dendrite growth. Furthermore, supramolecular crosslinked network formed through multiple hydrogen bonds π‐π stacking interactions, enhancing strength toughness SPEs. As result, Li//Li solid‐state symmetric cells assembled this SPE demonstrate stable cycling over 3000 h, while LiFePO 4 retain 93.6% initial capacity after 500 cycles at rate 1C. This work presents feasible design strategy developing highly functional materials.

Язык: Английский

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Altering the Zn²⁺ Migration Mechanism Enables the Composite Hydrogel Electrolytes with High Zn²⁺ Conduction and Superior Anti‐Dehydration

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 27, 2025

Abstract Hydrogel electrolytes are favored for flexible zinc‐ion batteries (FZIBs) due to their biocompatibility. Their application progress, however, is severely restricted by the poor water retention and low Zn 2+ transference number (t ). Herein, one composite polymer electrolyte (CPE) prepared introducing Prussian blues (PBs) as multifunctional fillers in polyvinyl alcohol (PVA) matrix enhance t . Experimental theoretical characterizations confirm that PB filler can alter migration mechanism trap of CPE. PBs active provide extra zinc ions unique 3D ion diffusion channels. Moreover, metal centers framework function Lewis acid sites have good affinity with anions salt, facilitating dissociation salt. Additionally, absorb coordination water, enhancing anti‐dehydration capability ionic conductivity hydrogel electrolytes. Consequently, P‐15/Zn‐15 shows high 16.3 mS cm⁻ 1 0.63. The Zn||Zn symmetric cells stably operate 600 h at 50 °C. Zn||P‐15/Zn‐15|| NaV 3 O 8 ·1.5H 2 full cell exhibits excellent cycling performance cycles.

Язык: Английский

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Constructing the interactive “neuron-inspired” transport network in membranes for efficient CO2/CH4 separation

Journal of Membrane Science, Год журнала: 2025, Номер unknown, С. 123775 - 123775

Опубликована: Янв. 1, 2025

Язык: Английский

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Biological Neural Network‐Inspired Micro/Nano‐Fibrous Carbon Aerogel for Coupling Fe Atomic Clusters With Fe‐N₄ Single Atoms to Enhance Oxygen Reduction Reaction

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

Nitrogen-coordinated metal single atoms catalysts, especially with M-N4 configuration confined within the carbon matrix, emerge as a frontier of electrocatalytic research for enhancing sluggish kinetics oxygen reduction reaction (ORR). Nevertheless, due to highly planar D4h symmetry in M-N4, their adsorption behavior toward intermediates is limited, undesirably elevating energy barriers associated ORR. Moreover, structural engineering substrate also poses significant challenges. Herein, inspired by biological neural network (BNN), reticular nervous system high-speed signal processing and transmitting, comprehensive biomimetic strategy proposed tailoring Fe-N4 (Fe SAs) coupled Fe atomic clusters ACs) active sites, which are anchored onto chitosan microfibers/nanofibers-based aerogel (CMNCA-FeSA+AC) continuous conductive channels an oriented porous architecture. Theoretical analysis reveals synergistic effect SAs ACs optimizing electronic structures expediting The ingenious will shed light on topology optimization efficient electrocatalysts advanced electrochemical conversion devices.

Язык: Английский

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Bio‐Inspired Core–Shell Structured Electrode Particles with Protective Mechanisms for Lithium‐Ion Batteries

Small, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 15, 2024

Lithium-ion batteries (LIBs), as predominant energy storage devices, are applied to electric vehicles, which is an effective way achieve carbon neutrality. However, the major obstructions their applications two dilemmas: enhanced cyclic life and thermal stability. Taking advantage of bio-inspired core-shell structures optimize self-protective mechanisms mercantile electrode particles, LIBs can improve electrochemical performance stability simultaneously. The favorable suppress volume expansion stabilize electrode-electrolyte interfaces (EEIs), mitigate direct contact between material electrolyte, promote electrical connectivity. They possess wide operating temperatures, high-voltage resistance, inhibit short circuits. During cycling, cathode anode generate a cathode-electrolyte interface (CEI) solid-electrolyte (SEI), respectively. Applying multitudinous coating approaches multifarious structured helpful for generation EEIs, self-healing surface cracks, maintaining structural integrities electrodes. protected shells act barriers minimize unwanted side reactions enhance These in-depth understandings evolution particles inspire further enhancements in LIB lifetime safety, especially electrodes possessing high-performance protective mechanisms.

Язык: Английский

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Regulating Lithium-Ion Transport in PEO-Based Solid-State Electrolytes through Microstructures of Clay Minerals

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

Опубликована: Янв. 11, 2025

Clay minerals show significant potential as fillers in polymer composite solid electrolytes (CSEs), whereas the influence of their microstructures on lithium-ion (Li+) transport properties remains insufficiently understood. Herein, we design advanced poly(ethylene oxide) (PEO)-based CSEs incorporating clay with diverse including 1D halloysite nanotubes, 2D Laponite (Lap) nanosheets, and 3D porous diatomite. These form distinct Li+ pathways at clay-PEO interfaces due to varied structural configurations. Among them, Lap nanosheets exhibit most improvements conductivity (1.67 × 10–4 ± 0.02 S cm–1 30 °C), transference number (0.72), oxidative stability (4.7 V). Consequently, a solid-state Li|LiFePO4 battery PEO/Lap CSE exhibits high reversible capacity superior cycling (with 90.2% retention after 250 cycles 1.0 °C). Furthermore, pouch batteries an integrated LiFePO4 cathode safety performance, even under extreme damage. This work provides valuable theoretical insights for application mineral CSEs.

Язык: Английский

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Surface‐Confined Disordered Hydrogen Bonds Enable Efficient Lithium Transport in All‐Solid‐State PEO‐Based Lithium Battery

Angewandte Chemie, Год журнала: 2025, Номер unknown

Опубликована: Фев. 17, 2025

Abstract Polyethylene oxide (PEO)‐based electrolytes are essential to advance all‐solid‐state lithium batteries (ASSLBs) with high safety/energy density due their inherent flexibility and scalability. However, the inefficient Li + transport in PEO often leads poor rate performance diminished stability of ASSLBs. The regulation intermolecular H‐bonds is regarded as one most effective approaches enable efficient transport, while practical performances hindered by electrochemical instability free H‐bond donors constrained mobility highly ordered H‐bonding structures. To overcome these challenges, we develop a surface‐confined disordered system stable donor‐acceptor interactions construct loosened chain segments/ions arrangement bulk phase PEO‐based electrolytes, realizing crystallization inhibition PEO, weak coordination entrapment anions, which conducive deposition. rationally designed LiFePO 4 ‐based ASSLB demonstrates long cycle‐life over 400 cycles at 1.0 C 65 °C capacity retention 87.5 %, surpassing currently reported polymer‐based This work highlights importance confined on an battery system, paving way for future design

Язык: Английский

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Boosting Li⁺ Conductivity and Oxidation Stability of Solid Polymer Electrolytes Using a Sustainable Montmorillonite-Based Ion Conductor

Nano Letters, Год журнала: 2025, Номер unknown

Опубликована: Фев. 25, 2025

Solid polymer electrolytes (SPEs), such as poly(ethylene oxide) (PEO), have garnered significant attention due to their compatibility with commercial lithium-ion (Li+) battery manufacturing, yet application is limited by poor Li+ transport efficiency and low oxidation stability. We hypothesize that these challenges can be addressed designing ion-conductors interact the terminal -OH groups of PEO chains. To verify this, we developed a sustainable ion-conductor (LSM) intercalating lithium bis(trifluoromethanesulfonyl)imide succinonitrile into interlayer space montmorillonite (MMT) nanosheets. The LSM significantly enhanced conductivity, transference number, stability PEO-based SPEs. Li metal batteries PEO/LSM SPEs LiFePO4 cathode showed superior rate performance cycling Pouch high-voltage NCM811 maintained stable operation after repeated mechanical deformation. This study provides new insights advanced for via straightforward intercalation strategy using naturally abundant 2D nanomaterials.

Язык: Английский

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Designing Cellulose Triacetate‐Based Universal Binder for High‐Voltage Sodium‐Ion Battery Cathodes with Enhanced Ionic Conductivity and Binding Strength

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 3, 2025

Binders play a pivotal role in the performance of sodium-ion battery (SIB) cathodes, but traditional binders often struggle to balance broad compatibility, high ionic conductivity, superior binding strength, and environmental sustainability. In this study, universal cellulose triacetate (TAC)-based binder (TAC-MMT) composed TAC natural montmorillonite (MMT) is designed facilitate rapid Na+ transport pathways establish robust hydrogen-bonding network. This innovative TAC-MMT features unique chemical structure that achieves conductivity through self-enrichment fast-transport mechanism, while its strength attributed crosslinks between proton acceptors (C═O) donors (-OH) MMT. More importantly, outstanding solubility film-forming properties contribute stable electrode protection compatibility with high-voltage SIB cathodes. Benefiting from these advantages, Na3V2(PO4)2O2F (NVPOF) electrodes demonstrate exceptional performance, including capacity retention 95.2% over 500 cycles at 5C rate response up 15C. The versatility further confirmed NaNi1/3Fe1/3Mn1/3O2 Na0.61[Mn0.27Fe0.34Ti0.39]O2 study highlights potential biomass-based as sustainable effective solution for advancing high-performance batteries.

Язык: Английский

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