Fluorine Chemistry in Rechargeable Batteries: Challenges, Progress, and Perspectives

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(6), P. 3494 - 3589

Published: March 13, 2024

The renewable energy industry demands rechargeable batteries that can be manufactured at low cost using abundant resources while offering high density, good safety, wide operating temperature windows, and long lifespans. Utilizing fluorine chemistry to redesign battery configurations/components is considered a critical strategy fulfill these requirements due the natural abundance, robust bond strength, extraordinary electronegativity of free fluoride formation, which enables fluorinated components with effectiveness, nonflammability, intrinsic stability. In particular, materials electrode|electrolyte interphases have been demonstrated significantly affect reaction reversibility/kinetics, tolerance batteries. However, underlining principles governing material design mechanistic insights atomic level largely overlooked. This review covers range topics from exploration fluorine-containing electrodes, electrolyte constituents, other for metal-ion shuttle constructing fluoride-ion batteries, dual-ion new chemistries. doing so, this aims provide comprehensive understanding structure–property interactions, features interphases, cutting-edge techniques elucidating role in Further, we present current challenges promising strategies employing chemistry, aiming advance electrochemical performance, operation, safety attributes

Language: Английский

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Eliminating water hazards and regulating electrode-electrolyte interfaces by multifunctional sacrificial electrolyte additives for long-life lithium metal batteries

Energy storage materials, Journal Year: 2024, Volume and Issue: 70, P. 103512 - 103512

Published: May 24, 2024

Language: Английский

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Suppressing dendritic metallic Li formation on graphite anode under battery fast charging

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 91, P. 484 - 500

Published: Jan. 19, 2024

Language: Английский

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Towards long-life 500 Wh kg−1 lithium metal pouch cells via compact ion-pair aggregate electrolytes

Nature Energy, Journal Year: 2024, Volume and Issue: 9(8), P. 987 - 998

Published: July 8, 2024

Language: Английский

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Recent progress on metal–organic framework/polymer composite electrolytes for solid-state lithium metal batteries: ion transport regulation and interface engineering

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(5), P. 1854 - 1884

Published: Jan. 1, 2024

This review provides an overview of different strategies to improve the ion transport MOF/polymer composite electrolytes and stabilize electrode/electrolyte interface.

Language: Английский

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Visualizing and Regulating Dynamic Evolution of Interfacial Electrolyte Configuration during De‐solvation Process on Lithium‐Metal Anode

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(17)

Published: March 5, 2024

Abstract Acting as a passive protective layer, solid‐electrolyte interphase (SEI) plays crucial role in maintaining the stability of Li‐metal anode. Derived from reductive decomposition electrolytes (e.g., anion and solvent), SEI construction presents an interfacial process accompanied by dynamic de‐solvation during plating. However, typical electrolyte engineering related modification strategies always ignore evolution configuration at Li/electrolyte interface, which essentially determines architecture. Herein, employing advanced electrochemical situ FT‐IR MRI technologies, we directly visualize variations solvation environments involving Li + ‐solvent/anion. Remarkably, weakened ‐solvent interaction anion‐lean have been synchronously revealed, is difficult for fabrication anion‐derived layer. Moreover, simple regulation strategy, pulse protocol was introduced to effectively restore concentration, resulting enhanced LiF‐rich layer improved plating/stripping reversibility.

Language: Английский

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Chloro‐Functionalized Ether‐Based Electrolyte for High‐Voltage and Stable Potassium‐Ion Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(23)

Published: April 10, 2024

Abstract Ether‐based electrolyte is beneficial to obtaining good low‐temperature performance and high ionic conductivity in potassium ion batteries. However, the dilute ether‐based electrolytes usually result ion‐solvent co‐intercalation of graphite, poor cycling stability, hard withstand voltage cathodes above 4.0 V. To address aforementioned issues, an electron‐withdrawing group (chloro‐substitution) was introduced regulate solid‐electrolyte interphase (SEI) enhance oxidative stability electrolytes. The (~0.91 M) chloro‐functionalized not only facilitates formation homogeneous dual halides‐based SEI, but also effectively suppress aluminum corrosion at voltage. Using this functionalized electrolyte, K||graphite cell exhibits a 700 cycles, K||Prussian blue (PB) (4.3 V) delivers 500 PB||graphite full‐cell reveals long 6000 cycles with average Coulombic efficiency 99.98 %. Additionally, can operate under wide temperature range from −5 °C 45 °C. This work highlights positive impact functionalization on electrochemical performance, providing bright future application for long‐lasting, wide‐temperature, PIBs beyond.

Language: Английский

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A Highly‐Fluorinated Lithium Borate Main Salt Empowering Stable Lithium Metal Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(19)

Published: March 13, 2024

Abstract Traditional lithium salts are difficult to meet practical application demand of metal batteries (LMBs) under high voltages and temperatures. LiPF 6 , as the most commonly used salt, still suffers from notorious moisture sensitivity inferior thermal stability those conditions. Here, we synthesize a salt perfluoropinacolatoborate (LiFPB) comprising highly‐fluorinated borate functional groups address above issues. It is demonstrated that LiFPB shows superior electrochemical without any HF generation temperatures voltages. In addition, can form protective outer‐organic inner‐inorganic rich cathode electrolyte interphase on LiCoO 2 (LCO) surface. Simultaneously, FPB − anions tend integrate into ion solvation structure favorable fast‐ion conductive LiB x O y based solid (Li) anode. All these fantastic features endow LCO (1.9 mAh cm −2 )/Li cells excellent cycling both (e.g., 80 % capacity retention after 260 cycles at 60 °C 4.45 V), even an extremely elevated temperature 100 °C. This work emphasizes important role in determining performance LMBs voltage

Language: Английский

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Sulfur Vacancies and 1T Phase‐Rich MoS₂ Nanosheets as an Artificial Solid Electrolyte Interphase for 400 Wh kg⁻¹ Lithium Metal Batteries

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(21)

Published: Feb. 13, 2024

Abstract Constructing large‐area artificial solid electrolyte interphase (SEI) to suppress Li dendrites growth and consumption is essential for high‐energy‐density metal batteries (LMBs). Herein, chemically exfoliated ultrathin MoS 2 nanosheets (EMoS ) as an SEI are scalable transfer‐printed on Li‐anode @Li). The EMoS with a large amount of sulfur vacancies 1T phase‐rich acts lithiophilic interfacial ion‐transport skin reduce the nucleation overpotential regulate + flux. With favorable Young's modulus homogeneous continuous layered structure, proposed @Li effectively suppresses repeat breaking/reforming SEI. As result, assembled @Li||LiFePO 4 @Li||LiNi 0.8 Co 0.1 Mn O demonstrate high‐capacity retention 93.5% 92% after 1000 cycles 300 cycles, respectively, at ultrahigh cathode loading 20 mg cm −2 . Ultrasonic transmission technology confirms admirable ability inhibit in practical pouch batteries. Remarkably, Ah‐class battery exhibits energy density 403 Wh kg −1 over 100 low negative/positive capacity ratio 1.8 electrolyte/capacity 2.1 g Ah strategy constructing by vacancies‐rich provides new guidance realize LMBs long cycling stability.

Language: Английский

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Hybridizing carbonate and ether at molecular scales for high-energy and high-safety lithium metal batteries

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: April 15, 2024

Abstract Commonly-used ether and carbonate electrolytes show distinct advantages in active lithium-metal anode high-voltage cathode, respectively. While these complementary characteristics hold promise for energy-dense lithium metal batteries, such synergy cannot be realized solely through physical blending. Herein, a linear functionalized solvent, bis(2-methoxyethyl) (BMC), is conceived by intramolecularly hybridizing ethers carbonates. The integration of the electron-donating group with electron-withdrawing can rationalizes charge distribution, imparting BMC notable oxidative/reductive stability relatively weak solvation ability. Furthermore, also offers including ability to slightly dissolve LiNO 3 , excellent thermostability nonflammability. Consequently, optimized BMC-based electrolyte, even typical concentrations single demonstrates tolerance (4.4 V) impressive Li plating/stripping Coulombic efficiency (99.4%). Moreover, it fulfills practical batteries satisfactory cycling performance exceptional towards thermal/mechanical abuse, showcasing its suitability safe high-energy batteries.

Language: Английский

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