Molecular Engineering of Monofluorinated Siloxane Electrolytes for High‐Voltage Lithium Metal Batteries DOI
Yuan Yang,

Junjie Lu,

Wenjing Ni

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 19, 2025

Abstract Electrolytes engineering plays a crucial role in determining electrode/electrolyte interfacial chemistry for developing high‐voltage lithium metal batteries (HV‐LMBs). Although great progress has been made on electrolytes anodes, the realization of HV‐LMBs severely hindered due to lack advanced that can simultaneously support stable Li anode and cathode (> 4.6 V vs + /Li). Herein, through molecular via strategic monofluorination design, two terminal monofluorinated siloxanes including (2‐fluoroethoxy)trimethylsilane (MFS) bis(2‐fluoroethoxy)dimethylsilane (F2DEO) are designed synthesized. Compared with nonfluorinated counterparts, siloxane‐based not only exhibit higher dielectric constant oxidative stability but also allow weaker solvation ability better compatibility. With “4S” (single salt single solvent) at standard concentration, 1.0 M LiFSI/F2DEO electrolyte endows operation 590 h Li||Li symmetric cells high coulombic efficiency 99.3% Li||Cu half cells. Moreover, Li||LiCoO 2 full achieve high‐capacity retention 85.9% after 200 cycles, which may be attributed F2DEO synergistic effect FSI − regulating interphase. This design strategy provides promising approach future exploration HV‐LMBs.

Язык: Английский

Advanced Ether‐Based Electrolytes for Lithium‐ion Batteries DOI
Shizhu Wang, Jian‐Yu Shi, Zhenhui Liu

и другие.

Advanced Energy Materials, Год журнала: 2024, Номер unknown

Опубликована: Июль 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.

Язык: Английский

Процитировано

21
Enhancing Lithium Metal Battery Performance with a Perfluorinated Bisalt Electrolyte Achieving High-Voltage Stability up to 4.8 V DOI
Xue Li, Fei Luo,

Miaomiao Yu

и другие.

Energy storage materials, Год журнала: 2025, Номер unknown, С. 104048 - 104048

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

3
Fluorine-ion-regulated yolk–shell carbon-silicon anode material for high performance lithium ion batteries DOI
Chengxin Liu, Zeping Wang, Qian Wang

и другие.

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 668, С. 666 - 677

Опубликована: Апрель 30, 2024

Язык: Английский

Процитировано

16
Tailoring Stable PEO‐Based Electrolyte/Electrodes Interfaces via Molecular Coordination Regulating Enables 4.5 V Solid‐State Lithium Metal Batteries DOI

Chaowei He,

Hangjun Ying,

Lucheng Cai

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 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.

Язык: Английский

Процитировано

12
Rational electrolyte design for Li-metal batteries operated under extreme conditions: a combined DFT, COSMO-RS, and machine learning study DOI
Liang‐Ting Wu, Yuting Zhan,

Zhong-Lun Li

и другие.

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(26), С. 15792 - 15802

Опубликована: Янв. 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.

Язык: Английский

Процитировано

7
Non‐Fluorinated Cyclic Ether‐Based Electrolyte with Quasi‐Conjugate Effect for High‐Performance Lithium Metal Batteries DOI
Xiao Zhu, Jiawei Chen, Gaopan Liu

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер 64(1)

Опубликована: Авг. 29, 2024

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

Язык: Английский

Процитировано

7
Hybrid solvating electrolytes for practical sodium-metal batteries DOI
Weiyin Chen, Jin‐Sung Park, Choah Kwon

и другие.

Joule, Год журнала: 2025, Номер unknown, С. 101811 - 101811

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

1
Asymmetric ether solvents for high-rate lithium metal batteries DOI
Il Rok Choi, Yuelang Chen, Ajit Shah

и другие.

Nature Energy, Год журнала: 2025, Номер unknown

Опубликована: Фев. 14, 2025

Язык: Английский

Процитировано

1
In Situ Hybrid Si/F Polymeric Network Electrolyte with Dual Interfacial Stability for High‐Voltage Lithium Metal Batteries DOI

Xianghe Ma,

Fei Shao, Weiping Li

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Июль 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.

Язык: Английский

Процитировано

6
Monofluorinated Phosphate with Unique P‐F Bond for Nonflammable and Long‐Life Lithium‐Ion Batteries DOI Open Access
Yuankun Wang,

Yintong Zhao,

Shu Zhang

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown

Опубликована: Окт. 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.

Язык: Английский

Процитировано

6