Emerging electrolytes with fluorinated solvents for rechargeable lithium-based batteries

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(8), P. 2713 - 2763

Published: Jan. 1, 2023

Electrolytes that can ensure the movement of ions and regulate interfacial chemistries for fast mass charge transfer are essential in many types electrochemical energy storage devices. However, emerging energy-dense lithium-based batteries, uncontrollable side-reactions consumption electrolyte result poor performances severe safety concerns. In this case, fluorination has been demonstrated to be one most effective strategies overcome above-mentioned issues without significantly contributing engineering technical difficulties. Herein, we present a comprehensive overview fluorinated solvents employed batteries. Firstly, basic parameters dictate properties solvents/electrolytes elaborated, including physical properties, solvation structure, interface chemistry, safety. Specifically, focus on advances scientific challenges associated with different enhancement their performance after fluorination. Secondly, discuss synthetic methods new reaction mechanisms depth. Thirdly, progress, structure-performance relationship, applications reviewed. Subsequently, provide suggestions solvent selection battery chemistries. Finally, existing further efforts summarized. The combination advanced synthesis characterization approaches assistance machine learning will enable design

Language: Английский

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Ion Transport Kinetics in Low‐Temperature Lithium Metal Batteries

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(42)

Published: Sept. 6, 2022

Abstract The deployment of rechargeable batteries is crucial for the operation advanced portable electronics and electric vehicles under harsh environment. However, commercial lithium‐ion using ethylene carbonate electrolytes suffer from severe loss in cell energy density at extremely low temperature. Lithium metal (LMBs), which use Li as anode rather than graphite, are expected to push baseline low‐temperature devices level. Albeit promising, kinetic limitations standard chemistries subzero condition inevitably hamper cyclability LMBs, resulting a decline plating/stripping reversibility short‐circuit hazards due dendritic growth. Such performance degradation becomes more pronounced with decreasing temperature, ascribing sluggish ion transport kinetics during charging/discharging processes includes + solvation/desolvation, through bulk electrolyte, well diffusion within solid electrolyte interphase electrode materials In this review, critical limiting factors challenges behaviors systematically reviewed discussed. strategies enhance electrolytes, electrodes, electrolyte/electrode interface comprehensively summarized. Finally, perspective on future research direction LMBs toward practical applications proposed.

Language: Английский

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Electrolyte Design for Lithium Metal Anode‐Based Batteries Toward Extreme Temperature Application

Advanced Science, Journal Year: 2021, Volume and Issue: 8(18)

Published: July 17, 2021

Abstract Lithium anode‐based batteries (LBs) are highly demanded in society owing to the high theoretical capacity and low reduction potential of metallic lithium. They expected see increasing deployment performance critical areas including electric vehicles, grid storage, space, sea vehicle operations. Unfortunately, competitive cannot be achieved when LBs operating under extreme temperature conditions where lithium‐ion chemistry fail perform optimally. In this review, a brief overview challenges developing for (<0 °C) (>60 operation provided followed by electrolyte design strategies involving Li salt modification, solvation structure optimization, additive introduction, solid‐state utilization introduced. Specifically, prospects using lithium metal (LMBs), sulfur (Li‐S) batteries, oxygen (Li‐O 2 ) applications evaluated. These three chemistries presented as prototypical examples how conventional charge transfer resistances side reactions can overcome. This review also points out research direction toward practical applications.

Language: Английский

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Advanced polymer-based electrolytes in zinc–air batteries

eScience, Journal Year: 2022, Volume and Issue: 2(5), P. 453 - 466

Published: Sept. 1, 2022

Zinc–air batteries (ZABs) are expected to be some of the most promising power sources for wearable and portable electronic devices have received widespread research interest. As an ion conductor connecting anodes cathodes, electrolyte is critical overall performance ZABs (e.g., energy density, rechargeability, operating voltage). Compared with liquid electrolytes, polymer-based electrolytes superior characteristics ZABs, such as negligible leakage, three-phase interface stabilization, dendrite suppression. In this perspective, we focus on recent progress in ZABs. After a brief introduction emphasize development terms their intrinsic properties interfacial chemistry. Finally, challenges viable strategies proposed We hope that work will provide useful guidance spur high-performance based advanced electrolytes.

Language: Английский

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A Review on Regulating Li⁺Solvation Structures in Carbonate Electrolytes for Lithium Metal Batteries

Advanced Materials, Journal Year: 2022, Volume and Issue: unknown, P. 2206009 - 2206009

Published: Aug. 31, 2022

Lithium metal batteries (LMBs) are considered promising candidates for next-generation battery systems due to their high energy density. However, commercialized carbonate electrolytes cannot be used in LMBs poor compatibility with lithium anodes. While increasing cut-off voltage is an effective way boost the density of LMBs, conventional ethylene carbonate-based undergo a number side reactions at voltages. It therefore critical upgrade electrolytes, performance which highly influenced by solvation structure ions (Li+). This review provides comprehensive overview strategies regulate Li+ better understanding science behind and behavior. Different systematically compared help select specific applications. The remaining scientific technical problems pointed out, directions future research on proposed.

Language: Английский

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Aqueous zinc-ion batteries at extreme temperature: Mechanisms, challenges, and strategies

Energy storage materials, Journal Year: 2022, Volume and Issue: 51, P. 683 - 718

Published: July 5, 2022

Language: Английский

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Low Concentration Electrolyte Enabling Cryogenic Lithium–Sulfur Batteries

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(44)

Published: Aug. 26, 2022

Abstract Lithium–sulfur chemistry suffers from poor conversion reaction kinetics, causing low‐capacity utilization of sulfur cathodes, particularly at cryogenic temperatures. Herein, based on low‐cost and abundant commercial particles directly, a low concentration electrolyte (LCE, 0.1 m ) is employed to accelerate lithium–sulfur temperatures, demonstrating broad applicability this approach. Compared conventional (1.0 electrolytes, the proposed LCE successfully enhances kinetics Li 2 S 4 restrains shuttle effects polysulfides, resulting in higher capacity utilizations more stable cycle performance 0 −20 °C. Further interfacial analyses cycled electrodes reveal that hybrid surface layer dominated by organic species as well some favorable inorganics constructed LCE, smaller resistance. In situ EIS measurements °C CV tests main differences electrode 1 further explaining working mechanism two electrolytes. These findings elucidate roles LCEs realizing faster for batteries provide simple, low‐cost, widely applicable pathway achieving high‐performance under extreme conditions.

Language: Английский

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Reconstruction of LiF-rich interphases through an anti-freezing electrolyte for ultralow-temperature LiCoO₂ batteries

Energy & Environmental Science, Journal Year: 2022, Volume and Issue: 16(3), P. 1024 - 1034

Published: Nov. 11, 2022

With iso-butyl formate (IF) as anti-freezing agent, a fluorine–sulfur electrolyte is designed to achieve low coordination number, high desolvation energy and stable LiF-rich interphase, enables the operation of an electric fan at −70 °C.

Language: Английский

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Strong Solvent and Dual Lithium Salts Enable Fast-Charging Lithium-Ion Batteries Operating from −78 to 60 °C

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(40), P. 22184 - 22193

Published: Sept. 28, 2023

Current lithium-ion batteries degrade under high rates and low temperatures due to the use of carbonate electrolytes with restricted Li+ conduction sluggish desolvation. Herein, a strong solvent dual lithium salts surmounts thermodynamic limitations by regulating interactions among ions, anions, solvents at molecular level. Highly dissociated bis(fluorosulfonyl)imide (LiFSI) in dimethyl sulfite (DMS) favorable dielectric constant melting point ensures rapid while affinity between difluoro(oxalato)borate anions (DFOB-) ions guarantees smooth desolvation within wide temperature range. In meantime, ultrathin self-limited electrode/electrolyte interface electric double layer induced DFOB- result enhanced electrode compatibility. The as-formulated electrolyte enables stable cycles currents (41.3 mA cm-2) range from -78 60 °C. 1 Ah graphite||LiCoO2 (2 mAh pouch cell achieves 80% reversible capacity 2 C rate -20 °C 86% 0.1 -50 This work sheds new light on design further facilitates development high-performance operating extreme conditions.

Language: Английский

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Rechargeable Metal-Sulfur Batteries: Key Materials to Mechanisms

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(8), P. 4935 - 5118

Published: April 10, 2024

Rechargeable metal-sulfur batteries are considered promising candidates for energy storage due to their high density along with natural abundance and low cost of raw materials. However, they could not yet be practically implemented several key challenges: (i) poor conductivity sulfur the discharge product metal sulfide, causing sluggish redox kinetics, (ii) polysulfide shuttling, (iii) parasitic side reactions between electrolyte anode. To overcome these obstacles, numerous strategies have been explored, including modifications cathode, anode, electrolyte, binder. In this review, fundamental principles challenges first discussed. Second, latest research on is presented discussed, covering material design, synthesis methods, electrochemical performances. Third, emerging advanced characterization techniques that reveal working mechanisms highlighted. Finally, possible future directions practical applications This comprehensive review aims provide experimental theoretical guidance designing understanding intricacies batteries; thus, it can illuminate pathways progressing high-energy-density battery systems.

Language: Английский

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