Observation of lithium stripping in super-concentrated electrolyte at potentials lower than regular Li stripping

Shiga, Tohru; Masuoka, Yumi; Nozaki, Hirōshi

doi:10.1039/d1ra01490k

Cited by 3 publications

(1 citation statement)

References 43 publications

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“…Lately, [DEME][TFSI] was selected to form a quasisolid-state electrolyte by the gelation of this IL when mixed with multi-wall carbon nanotubes or solidification when mixed with Li 6•40 La 3 Zr 1•40 Ta 0•60 O 12 (LLZTO) ceramic nanoparticles via non-covalent interactions. [28] Regarding salt concentration in ionic liquid based electrolytes, recent studies have shown that superconcentrated IL electrolytes (> 1 : 1 molar ratio, IL:salt) are able to provide an efficient protection to lithium-metal [29][30][31][32] or sodium-metal anodes. [33] Interestingly, effect of salt concentration is deeply studied in IL-based liquid electrolytes for LiÀ O 2 applications [34][35][36] but it is not largely evaluated when these are use in solid electrolytes.…”

Section: Introductionmentioning

confidence: 99%

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

Alvarez‐Tirado

Castro

Guéguen

et al. 2022

Batteries & Supercaps

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Lithium-air/O 2 batteries are a promising battery technology for automotive applications due to their high energy density. However, many challenges need to be solved, particularly the high reactivity of the electrolyte with oxygen superoxide radicals and its low cyclability. In this work, we present a simple and fast way to prepare polymer-based iongel soft solid electrolytes. Thermally and mechanically stable iongels are prepared by fast UV-photopolymerisation exhibiting a high ionic conductivity (~1.2 × 10 À 3 S cm À 1 at 25 °C). When used as solid electrolytes in lithium symmetrical cells, they can withstand a critical current density of 0.5 mA cm À 2 . Performance in LiÀ O 2 cells showed capacities as large as 3.3 mAh cm À 2 , and cycling capability of 25 cycles, exceeding results on liquidcounterpart cells.

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Section: Introductionmentioning

confidence: 99%

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

Alvarez‐Tirado

Castro

Guéguen

et al. 2022

Batteries & Supercaps

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Dimensionality Control of Li Transport by MOFs Based Quasi‐Solid to Solid Electrolyte (Q‐SSEs) for Li−Metal Batteries

Salado,

Fernández de Luis,

Smith

et al. 2024

Batteries & Supercaps

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Nowadays, lithium‐ion batteries (LIBs) are widely used in all walks of life and play an important role. As a complex system composed of multiple materials with diverse chemistry compositions, and where different electro‐chemical reactions take place, battery interfaces are essential for determining the operation, performance, durability, and safety of the battery. In this work, was proposed to study the incorporation of lithium bis(fluorosulfonyl)amide (LiFSI) doped 1‐ethyl‐3‐ methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMIm][TFSI]) ionic liquid into an archetype Ti‐based Metal Organic Framework (MOF) ((Ti) MIL125‐NH2) to create a solid to quasi‐solid (depending on the amount of IL in the system), and how it affects not only ionic transport but also structural properties of the IL/MOF electrolyte. Remarkedly, high ionic conductivity values (2.13 x 10‐3 S·cm‐1 at room temperature) as well as lithium transference number (tLi=0.58) were achieved, supported by Pulsed field gradient (PFG) NMR experiments. Electrochemical characterization revealed reversible plating‐stripping of lithium and lower overpotential after 750 h at 50 ºC. Besides, proof‐of‐concept solid state battery was fabricated resulting in a discharge capacity of 160 mAh·g‐1 at 50 ºC and 0.1C rate after 50 cycles. This work presents a suitable strategy to dendrite suppression capability, allowing its implementation as interface modifiers in next‐generation batteries.

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Electrochemical polymerization of polyhydrocarbons by reductive dehalogenation of chlorinated methanes

Seo¹,

Rajendiran²,

Lee³

et al. 2023

Cell Reports Physical Science

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Observation of lithium stripping in super-concentrated electrolyte at potentials lower than regular Li stripping

Abstract: When Li plating/stripping was conducted on a Cu powder electrode in a super-concentrated electrolyte of LiFSA and PNMePh, two potential plateaus of the Cu electrode for Li stripping were observed at −0.2 V and +1.0 V versus a Li counter electrode.

Cited by 3 publications

References 43 publications

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

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

Dimensionality Control of Li Transport by MOFs Based Quasi‐Solid to Solid Electrolyte (Q‐SSEs) for Li−Metal Batteries

Electrochemical polymerization of polyhydrocarbons by reductive dehalogenation of chlorinated methanes

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Observation of lithium stripping in super-concentrated electrolyte at potentials lower than regular Li stripping

Abstract: When Li plating/stripping was conducted on a Cu powder electrode in a super-concentrated electrolyte of LiFSA and PNMePh, two potential plateaus of the Cu electrode for Li stripping were observed at −0.2 V and +1.0 V versus a Li counter electrode.

Cited by 3 publications

References 43 publications

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

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

Dimensionality Control of Li Transport by MOFs Based Quasi‐Solid to Solid Electrolyte (Q‐SSEs) for Li−Metal Batteries

Electrochemical polymerization of polyhydrocarbons by reductive dehalogenation of chlorinated methanes

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

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