Effect of Temperature on Li Electrodeposition Behavior in Room-Temperature Ionic Liquids Comprising Quaternary Ammonium Cation

Sano, Hikaru; Kitta, Mitsunori; Shikano, Masahiro; Matsumoto, Hajime

doi:10.1149/2.1051913jes

Cited by 17 publications

(17 citation statements)

References 86 publications

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“…The surface resistance was temperature-dependent and also affected deposition polarizations and nucleation. As a result, to suppress the Li dendrite growth during cycling, the deposition polarization should be expanded during deposition while simultaneously increasing the Li diffusion coefficient of the electrolyte [ 76 ].…”

Section: Ionic Liquids For Lithium-ion Battery Electrolytesmentioning

confidence: 99%

Ionic Liquid Electrolytes for Electrochemical Energy Storage Devices

et al. 2021

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For decades, improvements in electrolytes and electrodes have driven the development of electrochemical energy storage devices. Generally, electrodes and electrolytes should not be developed separately due to the importance of the interaction at their interface. The energy storage ability and safety of energy storage devices are in fact determined by the arrangement of ions and electrons between the electrode and the electrolyte. In this paper, the physicochemical and electrochemical properties of lithium-ion batteries and supercapacitors using ionic liquids (ILs) as an electrolyte are reviewed. Additionally, the energy storage device ILs developed over the last decade are introduced.

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Section: Ionic Liquids For Lithium-ion Battery Electrolytesmentioning

confidence: 99%

Ionic Liquid Electrolytes for Electrochemical Energy Storage Devices

et al. 2021

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“…In addition, the electrochemical stability of ammonium cations is among the highest reported and usually significantly higher than for ionic liquids based on the more common imidazolium cation. Hence, quaternary ammonium cations are also stable at the harsh cathodic conditions of the reactive lithium metal, which is usually not the case for organic electrolytes [11]. The anions [FSI] − and [TFSI] − result in ionic liquids with a combination of excellent properties for the use as electrolytes [12].…”

Section: Introductionmentioning

confidence: 99%

Structure-Property Relation of Trimethyl Ammonium Ionic Liquids for Battery Applications

et al. 2021

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Ionic liquids are attractive and safe electrolytes for diverse electrochemical applications such as advanced rechargeable batteries with high energy densities. Their properties that are beneficial for energy storage and conversion include negligible vapor-pressure, intrinsic conductivity as well as high stability. To explore the suitability of a series of ionic liquids with small ammonium cations for potential battery applications, we investigated their thermal and transport properties. We studied the influence of the symmetrical imide-type anions bis(trifluoromethanesulfonyl)imide ([TFSI]−) and bis(fluorosulfonyl)imide ([FSI]−), side chain length and functionalization, as well as lithium salt content on the properties of the electrolytes. Many of the samples are liquid at ambient temperature, but their solidification temperatures show disparate behavior. The transport properties showed clear trends: the dynamics are accelerated for samples with the [FSI]− anion, shorter side chains, ether functionalization and lower amounts of lithium salts. Detailed insight was obtained from the diffusion coefficients of the different ions in the electrolytes, which revealed the formation of aggregates of lithium cations coordinated by anions. The ionic liquid electrolytes exhibit sufficient stability in NMC/Li half-cells at elevated temperatures with small current rates without the need of additional liquid electrolytes, although Li-plating was observed. Electrolytes containing [TFSI]− anions showed superior stability compared to those with [FSI]− anions in battery tests.

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“…Many processes, that is, the formation of dendrites, the irreversible side reactions between Li metal and electrolyte are impacted by the temperature. [247][248][249][250] In addition, as discussed in Section 2, the temperature can generate significant effects on the transfer rates of Li atoms, Li ions, and the electrochemical reaction rates, which will lead to the change in the stripping behavior of Li metal anode. Tewari et al 163 explored the effect of tem-perature on the formation of dead Li during the dissolution by the mesoscale model and experimental researches.…”

Section: Temperaturementioning

confidence: 99%

Mechanism understanding for stripping electrochemistry of Li metal anode

Jiang

Yang

et al. 2021

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111

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The pursuit of sustainable energy has a great request for advanced energy storage devices. Lithium metal batteries are regarded as a potential electrochemical storage system because of the extremely high capacity and the most negative electrochemical potential of lithium metal anode. Dead lithium formed in the stripping process significantly contributes to the low efficiency and short lifespan of rechargeable lithium metal batteries. This review displays a critical review on the current research status about the stripping electrochemistry of lithium metal anode. The significance of stripping process to a robust lithium metal anode is emphasized. The stripping models in different electrochemical scenarios are discussed. Specific attention is paid to the understanding for the electrochemical principles of atom diffusion, electrochemical reaction, ion diffusion in solid electrolyte interphase (SEI), and electron transfer with the purpose to strengthen the insights into the behavior of lithium electrode stripping. The factors affecting stripping processes and corresponding solutions are summarized and categorized as follows: surface physics, SEI, operational and external factors. This review affords fresh insights to explore the lithium anode and design robust lithium metal batteries based on the comprehensive understanding of the stripping electrochemistry.

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Effect of Temperature on Li Electrodeposition Behavior in Room-Temperature Ionic Liquids Comprising Quaternary Ammonium Cation

Cited by 17 publications

References 86 publications

Ionic Liquid Electrolytes for Electrochemical Energy Storage Devices

Ionic Liquid Electrolytes for Electrochemical Energy Storage Devices

Structure-Property Relation of Trimethyl Ammonium Ionic Liquids for Battery Applications

Mechanism understanding for stripping electrochemistry of Li metal anode

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