Advancements in Current Collectors for Composite Lithium Metal Anodes

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Авг. 29, 2024

Abstract Lithium (Li) metal batteries have attracted great attention as next‐generation high‐energy‐density storage systems due to the high theoretical energy density and low redox potential of Li metal. However, safety concerns poor cycle life are hindering commercialization batteries. Combination current collectors regulate plating/stripping behaviors is an effective strategy address these issues. In this review, recent advances in for composite anodes summarized, including construction interfacial protective layers on collectors, fabrication utilization 3D improving surface lithiophilicity collectors. Finally, perspectives limitations future research directions also presented.

Язык: Английский

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Realizing interfacial coupled electron/ion transport through reducing the interfacial oxygen density of carbon skeletons for high-performance lithium metal anodes

Journal of Energy Chemistry, Год журнала: 2024, Номер unknown

Опубликована: Окт. 1, 2024

Язык: Английский

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A novel gel polymer electrolyte of lithium metal batteries with enhanced interface compatibility and ion conductivity using multifaceted modification strategies

Electrochimica Acta, Год журнала: 2025, Номер unknown, С. 145782 - 145782

Опубликована: Янв. 1, 2025

Язык: Английский

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Lithium Deposition Mechanism under Different Thermal Conditions Unraveled via an Optimized Phase Field Model

Nano Letters, Год журнала: 2025, Номер 25(6), С. 2561 - 2567

Опубликована: Янв. 31, 2025

As one of the most important physical fields for battery operation, regulatory effect temperature on growth lithium dendrites should be studied. In this paper, we develop an optimized phase field model to explore Li in metal batteries. We incorporated full deposition kinetics, including atom diffusion and solid electrolyte interface restriction into revealed their significance determining transformation morphology from moss-like dendrite-like. found that a high or dispersed hot spots are more conducive stable operation than low concentrated due enhanced kinetics at uniform distribution spots. believe our work can provide useful tool further exploring thermal operation.

Язык: Английский

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Operando spatiotemporal super-resolution of thermal events monitoring in lithium metal batteries

National Science Review, Год журнала: 2025, Номер 12(5)

Опубликована: Март 6, 2025

Safety challenges in high-capacity lithium metal batteries primarily arise from thermal runaway, leading to smoke emissions, fires or explosions. Real-time monitoring of internal temperature distribution is necessary ensure safe operation and enhance cell performance. However, current methods lack dimensionality, precision, timeliness, hindering the detection uneven deposition localized variations that drive capacity fade safety risks. Here, we develop an operando spatiotemporal super-resolution system capable real-time, mapping across anode with a record-high spatial resolution 1820 points cm-², temporal 1 frame per 3 seconds. Utilizing optical frequency-domain reflectometry, Archimedean spiral fiber configuration, algorithms, capture critical identify hotspots during cycling. To improve uniformity reduce risks, apply protective strategies, including pyramid patterning, copper mesh polylactic acid. Cells these measures, as monitored by our system, show reduced average temperatures, delayed degradation fewer hotspots. This innovative approach not only integrates cutting-edge technology energy storage diagnostics but also establishes robust framework for assessing management thus significantly advancing density sustainable applications.

Язык: Английский

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Constructing Built‐in Electric Field in Heterogeneous Flower‐Like SnS₂@Few‐Layer Ti₃C₂ for Enhanced Charge Transfer Kinetics in Lithium‐ion Capacitors

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 7, 2025

Abstract Lithium‐ion capacitors (LICs) are considered promising advanced energy storage devices due to their combination of high and power density. However, the inherent mismatch in charge rate between anode cathode has forced search for materials with accelerated reaction kinetics. Herein, heterogeneous flower‐like SnS 2 @few‐layer Ti 3 C (SnS @f‐Ti ) composites asymmetric distribution through Sn─O─Ti bonded prepared, which can regulate electronic structure active sites. Moreover, presence f‐Ti substrate suppresses volume expansion , while alleviates interlayer stacking increases sites during charging/discharging processes. Consequently, LICs consisting activated carbon (AC) display density (6.67 kW kg −1 ), (126.26 Wh superior stability. Furthermore, functional theory (DFT) calculations experimental characterizations reveal that built‐in electric field, induced by modulating work function MXene, enables directional electron transfer interfaces, thereby lowering diffusion barrier Li ions boosting electrochemical kinetics composites. This provides guidance designing unique surface‐interface structures carrier transport heterojunctions.

Язык: Английский

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Dendrite evolution in flexible lithium metal batteries: Insights from electrochemical phase field modeling and in-situ experiments

Journal of Energy Storage, Год журнала: 2025, Номер 124, С. 116857 - 116857

Опубликована: Май 2, 2025

Язык: Английский

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A Dual‐Protective MXene/COF Artificial Interface for Dendrite‐Free and Stable Lithium Metal Anodes

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 6, 2025

Abstract It is still challengeable to inhibit the uncontrollable growth of lithium dendrites and large volume expansion during cycling for high‐energy metal batteries (LMBs). To simultaneously address such issues, herein, first time, a novel dual‐protective artificial solid electrolyte interface (SEI) combining “soft” covalent–organic framework (COF) spheres grown on “rigid” MXene nanosheets (MXene/COF) via facile mild method presented. The can provide abundant lithium‐ion diffusion channels promote rapid uniform deposition. unique rigid‐soft MXene/COF composite has outstanding mechanical flexibility mitigate SEI cracking, limit prevent dendrite puncture cycling. As result, Li||Li symmetrical cell, Li||LFP full cell Li||NCM811 with dual protective interlayers demonstrate much better electrochemical performances, compared those without interfaces. performance enhancement mechanism revealed by X‐ray photoelectron spectroscopy depth profiling in situ optical microscopy be attributed form lithiophilic layer, fast Li + transport, deposition caused interface. This work provides new insight into rational design, fabrication, mechanisms dual‐protective, soft‐rigid high‐performance LMBs.

Язык: Английский

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Ultra‐Low Alginate‐Based Multifunctional Composite Binders for Enhanced Mechanical, Electrochemical, and Thermal Performance of Li–S Batteries

Small, Год журнала: 2024, Номер unknown

Опубликована: Сен. 29, 2024

Abstract The practical application of Li–S batteries, which hold great potential as energy storage devices, is impeded by various challenges, such capacity degradation caused volume change, polysulfide shuttling, poor electrode kinetics, and safety concerns. Binder plays a crucial role in suppressing change cathode side, thereby enhancing the electrochemical performance batteries. In this research, novel network binder (SA‐Co‐PEDOT) composed sodium alginate presented, Co 2+ ions cross‐linking agent PEDOT an electronic conductor. theoretical analysis experimental testing confirm that SA‐Co‐PEDOT with synergistic combination catalytic center electron transfer effectively mitigates large volumetric changes during cycling while simultaneously kinetics through controlling deposition morphology sulfur end product its nucleation dissolution. As result, it achieves 844 mAh g −1 after 150 cycles at 0.2 C. Moreover, subjected bending test maintains 395 500 0.5 C, exhibiting impressively low decay rate only 0.11%. Even ultra‐low content 2 wt.% binder, still 999.7 100

Язык: Английский

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Lithium-ion comb—artificial self-regulating lithium-storage film on aluminum anode enabling long cycles of batteries

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 157051 - 157051

Опубликована: Окт. 1, 2024

Язык: Английский

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