Iongel Soft Solid Electrolytes Based on [DEME][TFSI] Ionic Liquid for Low Polarization Lithium‐O<sub>2</sub> Batteries

Alvarez‐Tirado, Marta; Castro, Laurent; Guéguen, Aurélie; Mecerreyes, David

doi:10.1002/batt.202200049

Cited by 6 publications

(2 citation statements)

References 48 publications

(80 reference statements)

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“…The GPEs can also serve as a separator in an electrode assembly. [ 132 ] Zhao and coworkers incorporated polymethyl methacrylate (PMMA)/[C 2 C 1 im][BF 4 ]‐DMSO‐based GPE in an LOB. [ 133 ] The LOB achieved exceptionally high discharge capacity (32793.5 mAh g −1 ), long cycle life (120 cycles), and a low charge overpotential (<2 V).…”

Section: Various Roles Of Ionic Liquids In Lobsmentioning

confidence: 99%

Li–O₂/Air Batteries Using Ionic Liquids – A Comprehensive Review

Zaidi

2023

Advanced Energy Materials

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The remarkable surge in energy demand has compelled the quest for high‐energy‐density battery systems. The Li–O2 battery (LOB) and Li–air battery (LAB), owing to their extremely high theoretical energy density, have attracted extensive research in the past two decades. The commercial development of LOB is hampered due to the numerous challenges its components present. Ionic liquids (ILs) are considered potential electrolyte solvents of LOBs and LABs due to their excellent electrochemical stability, thermal stability, non‐flammability, low flammability, and O2 solubility. In addition to electrolyte solvents, ILs also have other applications in LOB and LAB systems. This review reports the progress of IL‐based LOBs and LABs over the years since treported for the first time in 2005. The impact of the physiochemical properties of ILs on the performance of LOB and LAB at various operating conditions is thoroughly discussed. The various methodologies are also summarized that are employed to tune ILs’ physiochemical properties to render them more favorable for rechargeable lithium batteries. Tunable properties of ILs create the possibility of designing cost‐effective batteries with excellent safety, high energy density and high power density, and long‐term stability.

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Section: Various Roles Of Ionic Liquids In Lobsmentioning

confidence: 99%

Li–O₂/Air Batteries Using Ionic Liquids – A Comprehensive Review

Zaidi

2023

Advanced Energy Materials

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“…Pyrrolidinium and imidazolium cations and fluorine-based anions, such as bis(trifluoromethanesulfonyl)imide (TFSI), are the most recognized IL-based electrolytes [8,[10][11][12][13][14] . However, a less well-known IL, N,N-diethyl-N-methyl-N-(2methoxyethyl)ammonium bis(trifluoromethanesulfonyl)imide (DEME-TFSI), has shown promising properties in Li-O 2 cells, such as low polarization during galvanostatic cycling [15,16] and a good oxygen supply capacity for the oxygen reduction reaction [17] . Beyond the use of advanced catalysts to assist the oxygen evolution reaction (OER)/oxygen reduction reaction (ORR) kinetics [18,19] , a method to seek higher performance is to increase the fluorine content within the electrolyte structure, as it has a beneficial effect in the formation of a passivating lithium protection layer [20] and/or a tendency to increase oxygen solubility in the solution (the active material in this type of cell) [17] .…”

Section: Introductionmentioning

confidence: 99%

Design of highly conductive iongel soft solid electrolytes for Li-O2 batteries

2022

Energy Mater

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Li-O 2 batteries show high energy storage potential, but there remain many material challenges that must be solved to fully develop them into a robust technology. The reactivity of the electrolyte against lithium metal as the anode or with oxygen superoxide radicals in the cathode is the main problem that may be alleviated by the use of ionic liquids and solid electrolytes. In this work, iongel solid flexible electrolytes with facile preparation are designed based on five variations of the successful N,N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium bis(trifluoromethanesulfonyl)imide ionic liquid. These iongels show an outstanding ionic conductivity of 7.8 × 10 -3 S•cm -1 at 25 °C, excellent performance against lithium metal and reduced dendritic growth, even at a high current density rate of 2 mA•cm -2 . Tests on Li-O 2 cells show a 100% capacity retention for 25 cycles with limited capacity. Hence, this work provides a plausible pathway to tackle the design of effective lithium protection methods and efficient solid electrolytes for Li-O 2 batteries.

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Designing Conductive Pyrrolidinium‐Based Dual Network Gel Electrolytes: Tailoring Performance with Dynamic and Covalent Crosslinking

Katcharava,

Orlamünde,

Tema

et al. 2024

Adv Funct Materials

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Transitioning toward a carbon‐negative direction necessitates continued development and enhancement of existing lithium battery technologies. A key impediment for these technologies is the utilization of flammable organic solvent‐based electrolytes, which pose significant safety risks. Furthermore, the recyclability of batteries has not reached the level required for transitioning to a circular economy. Here, poly(ionic liquid)‐based dual network gel electrolytes are reported as safer and sustainable alternative materials. The materials employ both, dynamic (up to 45 mol%) and covalent crosslinking (up to 10 mol%), allowing the fabrication of mechanically stable gels with a high content (up to 65 wt%) of ionic liquid/salt both via thermal and photo polymerization. The dual nature of this network in interplay with other key components is systematically investigated. Mechanical stability (up to 0.7 MPa), combined with enhanced ionic conductivity (surpassing 10−4 S cm−1 at room temperature) is achieved via the synergetic combination of dynamic non‐covalent and covalent crosslinking, resulting in improved electrochemical (up to 5 V) and thermal stability (reaching 300 °C) by the embedded ionic liquid. Moreover the presence of the dynamic crosslinks facilitates reprocessing at 70 °C without comrpomising the electrochemical performance, thus reaching full recyclability and reusability.

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Iongel Soft Solid Electrolytes Based on [DEME][TFSI] Ionic Liquid for Low Polarization Lithium‐O₂ Batteries

Cited by 6 publications

References 48 publications

Li–O₂/Air Batteries Using Ionic Liquids – A Comprehensive Review

Li–O₂/Air Batteries Using Ionic Liquids – A Comprehensive Review

Design of highly conductive iongel soft solid electrolytes for Li-O2 batteries

Designing Conductive Pyrrolidinium‐Based Dual Network Gel Electrolytes: Tailoring Performance with Dynamic and Covalent Crosslinking

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Iongel Soft Solid Electrolytes Based on [DEME][TFSI] Ionic Liquid for Low Polarization Lithium‐O2 Batteries

Cited by 6 publications

References 48 publications

Li–O2/Air Batteries Using Ionic Liquids – A Comprehensive Review

Li–O2/Air Batteries Using Ionic Liquids – A Comprehensive Review

Design of highly conductive iongel soft solid electrolytes for Li-O2 batteries

Designing Conductive Pyrrolidinium‐Based Dual Network Gel Electrolytes: Tailoring Performance with Dynamic and Covalent Crosslinking

Contact Info

Product

Resources

About

Iongel Soft Solid Electrolytes Based on [DEME][TFSI] Ionic Liquid for Low Polarization Lithium‐O₂ Batteries

Li–O₂/Air Batteries Using Ionic Liquids – A Comprehensive Review

Li–O₂/Air Batteries Using Ionic Liquids – A Comprehensive Review