Advanced Ether‐Based Electrolytes for Lithium‐ion Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 14, 2024

Abstract Lithium‐ion batteries (LIBs) have emerged as vital elements of energy storage systems permeating every facet modern living, particularly in portable electronic devices and electric vehicles. However, with the sustained economic social development, new‐generation LIBs high density, wide operating temperature range, fast charge, safety are eagerly expected, while conventional ethylene carbonate (EC)‐based electrolytes fail to satisfy corresponding requirements. Comparatively, ether‐based electrolyte fascinating properties recently been revived fields, many advanced exciting performances under developed. This review provides an extensive overview latest breakthroughs concerning applied intercalation cathodes. To systematically outline progression electrolytes, this is categorized from perspective anodes follows: i) graphite anode‐based LIBs; ii) silicon iii) lithium metal LIBs.

Language: Английский

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Enhancing Lithium Metal Battery Performance with a Perfluorinated Bisalt Electrolyte Achieving High-Voltage Stability up to 4.8 V

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104048 - 104048

Published: Jan. 1, 2025

Language: Английский

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Fluorine-ion-regulated yolk–shell carbon-silicon anode material for high performance lithium ion batteries

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 668, P. 666 - 677

Published: April 30, 2024

Language: Английский

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Tailoring Stable PEO‐Based Electrolyte/Electrodes Interfaces via Molecular Coordination Regulating Enables 4.5 V Solid‐State Lithium Metal Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 13, 2024

Abstract Solid‐state lithium metal batteries (SSLMBs) with poly (ethylene oxide) (PEO)‐based electrolytes have increasingly become one of the most promising battery technologies due to high energy density and safety. However, adverse electrode/electrolyte interface compatibility issues hinder further application. Herein, a PEO‐based composite solid electrolyte excellent anode cathode interfacial is designed via coordination modulation strategy induced by difluorobis(oxalato)phosphate (DFBOP). By utilizing this electrolyte, robust inorganic‐rich interphase involving LiF, Li x PO y F z , P─O components in situ generated on (Li) LiNi 0.8 Co 0.1 Mn O 2 (NCM811) surfaces forceful among PEO, bis(trifluoromethanesulphonyl)imide, DFBOP subsequent adjustment front orbital levels. It contributes homogeneous deposition an effective impediment PEO oxidation decomposition at voltage, promoting superior stability. Consequently, Li‐symmetric cells modified can achieve stable cycle over 7000 h 0.2 mA cm −2 . Specially, unique organic–inorganic interpenetration network structure enables 4.5 V Li/NCM811 steadily 100 cycles, discharge capacity 215.4 mAh g −1 initial coulombic efficiency 91.23%. This research has shed light design from perspective regulation construct high‐performance SSLMBs.

Language: Английский

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Asymmetric ether solvents for high-rate lithium metal batteries

Nature Energy, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 14, 2025

Language: Английский

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In Situ Hybrid Si/F Polymeric Network Electrolyte with Dual Interfacial Stability for High‐Voltage Lithium Metal Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 11, 2024

Abstract High‐voltage lithium‐metal batteries (LMBs) are promising for energy storage applications but suffer from poor electrochemical window of solid polymer electrolytes (SPEs), which difficult to achieve via a single polymeric functionality. Herein, hybrid Si/F‐based 3D network is reported bearing polysiloxane backbone with fluorinated pendants tune the highest occupied molecular orbital (HOMO)/the lowest unoccupied LUMO energies, thermodynamically expanding intrinsic electrolyte (SPE). Meanwhile, Si/F functionalities high fluorine abundance identified furnish dual interfacial kinetic stability at both anode and cathode interfaces stabilized interface (SEI) (CEI), respectively. As result, stable cycling in solid‐state high‐voltage LMBs achieved up an ultrahigh operating voltage 4.9 V. Furthermore, it shows that situ blending SPE eutectic (EE) form non‐flammable gel can mitigate parasitic reactions EE against metallic Li highly reversible charge–discharge 4.2 4.8 V 25 °C.

Language: Английский

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Rational electrolyte design for Li-metal batteries operated under extreme conditions: a combined DFT, COSMO-RS, and machine learning study

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(26), P. 15792 - 15802

Published: Jan. 1, 2024

We developed a computational protocol combining DFT, COSMO-RS, and machine learning to investigate the thermodynamic properties of 190 binary solvent mixtures. This approach demonstrates high potential for guiding electrolyte design.

Language: Английский

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Non‐Fluorinated Cyclic Ether‐Based Electrolyte with Quasi‐Conjugate Effect for High‐Performance Lithium Metal Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 64(1)

Published: Aug. 29, 2024

Fluorinated ether-based electrolytes are commonly employed in lithium metal batteries (LMBs) to attenuate the coordination ability of ether solvents with Li

Language: Английский

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Monofluorinated Phosphate with Unique P‐F Bond for Nonflammable and Long‐Life Lithium‐Ion Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 9, 2024

Abstract Lithium‐ion batteries (LIBs) with conventional carbonate‐based electrolytes suffer from safety concerns in large‐scale applications. Phosphates feature high flame retardancy but are incompatible graphite anode due to their inability form a passivated solid electrolyte interphase (SEI). Herein, we report monofluorinated co‐solvent, diethyl fluoridophosphate (DEFP), featuring unique P−F bond that allows trade‐off between and electrochemical performance LIBs. The DEFP weakens ion‐dipole interactions Li + ions, lowering the desolvation barrier, simultaneously reduces lowest unoccupied molecular orbital (LUMO) of DEFP, promoting formation robust inorganic‐rich SEI. Additionally, exhibits improved thermal stability both SEI inherent flame‐retardant properties bond. Consequently, optimized DEFP‐based cyclability rate capacity LiNi 0.8 Co 0.1 Mn O 2 ||graphite full cells compared triethyl phosphate‐based commercial carbonate electrolytes. Even at low E/C ratio 3.45 g Ah −1 , 1.16 NCM811||Gr pouch achieve retention 94.2 % after 200 cycles. This work provides promising approach decouple phosphate compatibility, paving way for safer high‐performance lithium‐ion batteries.

Language: Английский

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Perspective on Recent Advances of Functional Electrolytes for Lithium Metal Batteries

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(12), P. 10634 - 10652

Published: June 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.

Language: Английский

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