Designing Current Collectors to Stabilize Li Metal Anodes

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 5, 2025

Rechargeable batteries employing Li metal anodes have gained increasing attention due to their high energy density. Nevertheless, low stability and reversibility of severely impeded practical applications. Designing current collectors (CCs) with reasonable structure composition is an efficient approach stabilizing the anodes. However, in-depth comprehensive understanding about design principles modification strategies CCs for realizing stable still lacking. Herein, a critical review focusing on rational summarized. First, requirements in are elucidated clarify objectives CCs. Then, including lithiophilic site modification, 3D architecture construction, protective layer crystalline plane engineering, as well corresponding highlighted. On this basis, recent progress development discussed. Finally, future directions suggested focus developing operando monitoring technology, designing cells under conditions close commercial This will spur more insightful researches toward advanced CCs, promote commercialization.

Язык: Английский

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Sodium–Sulfur Cells with a Sulfurized Polyacrylonitrile Cathode and a Localized High Concentration Electrolyte with Toluene as a Nonfluorinated Diluent

Advanced Functional Materials, Год журнала: 2024, Номер 34(44)

Опубликована: Июнь 24, 2024

Abstract Room‐temperature sodium–sulfur (Na–S) batteries are recognized as promising candidates for next‐generation scalable energy storage systems due to their high density and cost‐effectiveness. However, several challenges persist, including the shuttle effect of polysulfide compatibility sodium metal with electrolytes. Herein, study presents a novel type localized high‐concentration electrolyte (LHCE), utilizing cost‐effective, low‐density nonfluorinated diluent, toluene, in contrast conventional fluorinated diluents. Based on functional theory calculations stripping/plating behavior, toluene demonstrates better reduction stability than other aromatic solvents different substitutions. Also, compared 1,2,2‐tetrafluoroethyl‐2,2,3,3‐tetrafluoropropyl‐ether (TTE) exhibits enhanced metal. Furthermore, it modifies solvation structure by favoring anion‐dominated species, which contributes formation robust inorganic‐rich solid‐electrolyte interphase (SEI) Na‐ion transport. Consequently, Na–S cells featuring sulfurized polyacrylonitrile (SPAN) cathode developed LHCE exhibit good cycling capacity. The work strategy developing low‐cost practical batteries.

Язык: Английский

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Enhancing Peroxidase‐Like Activity and Photothermal Property of Copper Single‐Atom Nanozyme via A Cascade Competition Strategy

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 16, 2025

Abstract Single‐atom nanozymes (SANs) are promising enzyme‐active catalysts due to their maximum atomic utilization. However, it is still a challenge precisely regulate the single‐atom structure, especially in multimetallic MOFs. Based on Cu‐N 4 structure of Zn Cu 1 , cascade competition strategy mediated by buffer (polydopamine) proposed for first time, which induces one‐step nonthermal reaction remove inactive site and adjust coordination environment. Experimental results theoretical calculations show that nanozyme with 2 O (Cu‐N/O) breaks strong steric restriction, exposed active can better adsorb H making have peroxidase‐like activity. Compared traditional bimetallic (Cu ) monometallic (Cu‐MoF) nanozymes, has stronger catalytic activity photothermal properties, as well good photocatalytic extremely stability. It successfully applied Lateral flow immunoassay achieve three‐mode ultrasensitive detection Escherichia coli O157:H7, test strips after subjected broad‐spectrum sterilization treatment.

Язык: Английский

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The Dependence of Solid Electrolyte Interphase on the Crystal Facet of Current Collector in Li Metal Battery

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(37)

Опубликована: Июнь 28, 2024

The continuous electrolyte decomposition and uncontrolled dendrite growth caused by the unstable solid interphase (SEI) have largely hindered development of Li metal batteries. Here, we demonstrate that tuning facet current collector can regulate composition SEI subsequent deposition behavior using single-crystal Cu foils as an ideal platform. theoretical experimental studies reveal (100) possesses strong adsorption to anions, guiding more anions participate preferentially in inner Helmholtz plane further promoting formation stable inorganic-rich SEI. Consequently, with a single [100] orientation (s-Cu(100)) achieve dendrite-free enhanced plating/stripping reversibility. Moreover, anode deposited on s-Cu(100) stabilize operation Ah-level pouch cell (350 Wh kg

Язык: Английский

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Perspective on Recent Advances of Functional Electrolytes for Lithium Metal Batteries

Energy & Fuels, Год журнала: 2024, Номер 38(12), С. 10634 - 10652

Опубликована: Июнь 10, 2024

Lithium metal batteries (LMBs) have attracted extensive research interest because of their unparalleled electrochemical performances. Electrolytes, a critical component batteries, play pivotal role in promoting ionic and charge transport forming solid–electrolyte interphase (SEI). The solvation chemistry electrolytes is closely related to the performance LMBs can be effectively manipulated by adjusting components structures. However, with undesirable properties lead fast capacity decay even pose severe safety hazards LMBs. Therefore, development high-performance for advancement Typical electrolyte strategies include high-concentration (HCEs) localized (LHCEs). In this review, we primarily focus on recent advancements functional design strategies. We provide brief overview characteristics commonalities different formulations. Additionally, prepared basis novel solvents are also summarized, which key method achieving high Finally, inspiring methods further optimize compositions structures practical proposed.

Язык: Английский

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Active fluorobenzene diluent regulated tetraglyme electrolyte enabling high-performance Li metal batteries

Energy storage materials, Год журнала: 2024, Номер unknown, С. 103940 - 103940

Опубликована: Дек. 1, 2024

Язык: Английский

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Practical 4.7 V solid-state 18650 cylindrical lithium metal batteries with in-situ fabricated localized high-concentration polymer electrolytes

National Science Review, Год журнала: 2025, Номер 12(4)

Опубликована: Янв. 17, 2025

ABSTRACT In-situ fabricated gel polymer electrolytes (GPEs), characterized with superior interfacial properties and large-scale processibility, represent a promising electrolyte system for high-performance lithium metal batteries (LMBs). Herein, we propose an in-situ high-voltage GPE featuring localized high-concentration solvation structure (LHCE-GPE). This tailored special within matrix promotes the formation of electrochemically robust electrode–electrolyte interphase. Furthermore, employing LHCE-GPE, Li||Li1.2Ni0.13Co0.13Mn0.54O2 cells operating at 4.8 V demonstrate high specific capacity 248 mAh g−1, 4.5 Li||LiNi0.8Co0.1Mn0.1O2 achieve remarkable cycling stability over 1000 cycles. Significantly, our LHCE-GPE allows operation practical solid-state 18650 cylindrical LMBs 4.7 industrial Li-ion 4.6 V, achieving energy densities 250 283 Wh kg−1, respectively (excluding packaging), while also demonstrating safety during rigorous nail-penetration tests. Our design presents powerful strategy realizing density safety.

Язык: Английский

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Importance of High-Concentration Electrolytes for Lithium-Based Batteries

Encyclopedia, Год журнала: 2025, Номер 5(1), С. 20 - 20

Опубликована: Фев. 5, 2025

Each battery cell consists of three main components: the anode, cathode, and separator soaked with liquid electrolyte, medium in that allows charged ions to move between two electrodes. Besides a wide electrochemical stability window good compatibility both electrodes, electrolyte should also be safe, thermally stable environmentally benign, showing high ionic conductivity charge-carrying Li finally low price. This unique combination properties is impossible achieve simple salt–solvent mixture usually requires different components, i.e., several solvents additives one or more conducting salt(s). For lithium-based batteries, which are most common energy storage devices today, solution based on lithium hexafluorophosphate (LiPF6) organic carbonates as solvent used. Usually, salt concentrations used for electrolytes range ≈1 1.2 M, but recently, much higher 5 M even over 10 have been investigated they offer benefits ranging from increased safety broadened window, thus enabling cheap safe solvents, water.

Язык: Английский

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Conformational Gearing of Black Phosphorus Anode via Biomimetic Adaptive Mechanism for Fast Charging and Low-Temperature Adaptability in Potassium Batteries

Energy storage materials, Год журнала: 2025, Номер unknown, С. 104101 - 104101

Опубликована: Фев. 1, 2025

Язык: Английский

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Designing ionic liquid electrolytes for a rigid and Li+-conductive solid electrolyte interface in high performance lithium metal batteries

Chemical Physics Letters, Год журнала: 2025, Номер unknown, С. 141959 - 141959

Опубликована: Фев. 1, 2025

Язык: Английский

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