Journal of Energy Chemistry, Год журнала: 2024, Номер unknown
Опубликована: Дек. 1, 2024
Язык: Английский
Journal of Energy Chemistry, Год журнала: 2024, Номер unknown
Опубликована: Дек. 1, 2024
Язык: Английский
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
Процитировано
4Materials 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
Процитировано
2Journal of Energy Chemistry, Год журнала: 2024, Номер 98, С. 414 - 421
Опубликована: Июль 6, 2024
Язык: Английский
Процитировано
10Small, 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
Процитировано
1Advanced 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
Процитировано
1Advanced 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
Процитировано
8Materials Today, Год журнала: 2025, Номер unknown
Опубликована: Март 1, 2025
Язык: Английский
Процитировано
1Energy & Fuels, Год журнала: 2024, Номер 38(15), С. 14696 - 14703
Опубликована: Июль 12, 2024
Язык: Английский
Процитировано
4Journal of Energy Chemistry, Год журнала: 2024, Номер 102, С. 555 - 575
Опубликована: Ноя. 22, 2024
Язык: Английский
Процитировано
4Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 179486 - 179486
Опубликована: Фев. 1, 2025
Язык: Английский
Процитировано
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