Advances in Anion Chemistry in the Electrolyte Design for Better Lithium Batteries

Nano-Micro Letters, Год журнала: 2025, Номер 17(1)

Опубликована: Фев. 17, 2025

Abstract Electrolytes are crucial components in electrochemical energy storage devices, sparking considerable research interest. However, the significance of anions electrolytes is often underestimated. In fact, have significant impacts on performance and stability lithium batteries. Therefore, comprehensively understanding anion chemistry importance. Herein, in-depth comprehension its positive effects interface, solvation structure Li-ions, as well batteries been emphasized summarized. This review aims to present a full scope furnish systematic cognition for rational design advanced better with high density, lifespan, safety. Furthermore, insightful analysis perspectives based current proposed. We hope that this sheds light new electrolytes.

Язык: Английский

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Suppressing Intergranular Cracking with Near-Surface Layer Regulation for Electrochemical-Thermal Stabilization of LiCoO2

Materials Horizons, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

To further meet the application needs of lithium-ion batteries, developing cathodes with higher voltage and operating temperatures has become a primary goal. However, LiCoO2 encounter structural issues, particle fracture, side reactions during high-voltage high-temperature cycling. Thus, this work designs novel interface engineering approach involving near-surface Li layer regulation enhances stability R3̄m layered structure, suppressing intergranular cracking. An undistorted surface reduced phase transitions was revealed by HAADF-STEM. The post-cycle simulations XRD stabilizes interplanar spacing. strong B-O bonds lower O 2p energies, preventing oxygen loss confirmed XPS band structure. Therefore, even under 50 °C, half-cell maintains capacity retention rate 79% after 200 cycles at 5C 4.5 V.

Язык: Английский

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An ultrathin and robust single-ion conducting interfacial layer for dendrite-free lithium metal batteries

Journal of Energy Chemistry, Год журнала: 2024, Номер 98, С. 414 - 421

Опубликована: Июль 6, 2024

Язык: Английский

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Molecularly Engineered Artificial Solid Electrolyte Interphase with Tailored Lithiophilicity and Solvent‐Phobicity for Stable Lithium Metal Batteries

Small, Год журнала: 2025, Номер unknown

Опубликована: Фев. 16, 2025

Lithium (Li) metal is recognized as a promising anode material for rechargeable batteries primarily due to its high specific capacity and energy density. However, major challenge persists in uncontrolled Li electrodeposition irregular solid electrolyte interphase (SEI) formation during cycling, leading premature cell failure safety hazards. Herein, an artificial SEI presented with tailored lithiophilicity solvent-phobicity address these critical issues. As model system the SEI, series of polyethyleneimine (PEI) substituted by 1,2-epoxyhexane (EH) (PEI-EH) introduced, consisting lithiophilic, nitrogen-rich PEI, which promotes ion solvation regulates uniform flux. The abundant amine groups PEI are partially solvent-phobic hexyl reduce swelling prevent solvent decomposition. By systematically modulating physical properties PEI-EH, including polarity mechanical characteristics, optimized protective layer that effectively suppresses dendrite growth identified. This study highlights importance molecular engineering design SEIs achieving dendrite-free, long-lasting batteries.

Язык: Английский

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Thermoresponsive Mono‐Solvent Electrolyte Inhibiting Parasitic Reactions for Safe Lithium Metal Batteries

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 10, 2025

Abstract Solvents in liquid and gel polymer electrolytes are recognized for contributing to high ionic conductivity high‐energy‐density lithium metal batteries. However, parasitic reactions involving solvents induce safety risks under thermal abuse conditions poor lifespan during room‐temperature cycles, which rarely investigated. This study introduces a thermoresponsive mono‐solvent electrolyte as built‐in switch. The polymerizes at elevated temperatures, creating passivate network without residue solvents. exhibits stability with 91% mass retention 200 °C significantly suppresses side between the electrolyte, reducing runaway risks. Ah‐level Li||LiNi 0.8 Co 0.1 Mn O 2 pouch batteries employing this can efficiently improve critical temperature of by 75 compared electrolyte. At ambient promotes formation stable solid interphase (SEI) rich LiF Li O, effectively dendrite growth on anode. Consequently, 0.5 0.2 0.3 cells retain capacity after 152 even high‐loading cathodes (19.7 mg cm −2 , 3 mAh ). research offers valuable insights into inhibiting electrochemical cycle runaway, enhancing

Язык: Английский

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Anion‐Reduction‐Catalysis Induced LiF‐Rich SEI Construction for High‐Performance Lithium‐Metal Batteries

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 3, 2024

Abstract The practical application of lithium‐metal batteries (LMBs) remains impeded by uncontrollable Li dendrite growth and unstable solid‐state electrolyte interphase (SEI) on anodes. Constructing the inorganic‐rich SEI is considered as an effective strategy to realize dense deposition inhibit interfacial side reactions, thereby improving lifespans LMBs. Herein, anion‐reduction‐catalysis mechanism proposed design a LiF‐rich utilizing 2D tellurium (Te) nanosheets catalysts, which are homogenously implanted substrate. Lithiophilic Te can induce uniform nucleation through in situ lithiation while resulting product 2 reduce energy barrier for anion decomposition promote generation LiF SEI. Consequently, reactions effectively suppressed, enabling long‐cycle‐life Te‐modified electrode half‐cells delivers superior cycle life exceeding 500 cycles high average Coulombic efficiency 97.8% at 5 mAh cm −2 . high‐energy‐density (405 Wh kg −1 ) pouch cells pairing anodes with high‐mass‐loading LiNi 0.9 Co 0.05 Mn O (NCM90) cathodes exhibit stable cycling performance 99.3% carbonate electrolytes. This work provides promising catalyst paves way developing

Язык: Английский

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The rise of lithium bis(fluorosulfonyl) imide: An efficient alternative to LiPF6 and functional additive in electrolytes

Materials Today, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

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Disassociating Lithium Salts in Deep Eutectic Solvents and Inhibiting Aluminum Corrosion for Low-Temperature Lithium–Metal Batteries

Energy & Fuels, Год журнала: 2024, Номер 38(15), С. 14696 - 14703

Опубликована: Июль 12, 2024

Язык: Английский

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Recent progress on the materials design towards thermally safe sodium-ion batteries

Journal of Energy Chemistry, Год журнала: 2024, Номер 102, С. 555 - 575

Опубликована: Ноя. 22, 2024

Язык: Английский

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Three Dimensional Lithiophilic–Lithiophobic Skeleton Enabling Highly Reversible Lithium Metal Anode

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 179486 - 179486

Опубликована: Фев. 1, 2025

Язык: Английский

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