Ambiently fostering solid electrolyte interphase for low-temperature lithium metal batteries

Duan, Jia-Yue; Chen, Jin-Xiu; Wang, Fang-Fang; Zhang, Jin-Hao; Fan, Xiao-Zhong; Wang, Liping; Song, Yingze; Xia, Wei; Zhao, Yusheng; Kong, Long

doi:10.1016/j.jechem.2023.08.054

Cited by 20 publications

(4 citation statements)

References 46 publications

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“…The linear carbonate ethyl methyl carbonate (EMC) is considered since it combines methyl and ethyl groups that dictate characteristics of DMC and DEC, probably meaning that the EMC embraces the two features of DMC and DEC. The FEC acts as a film-forming additive to facilitate the formation of low-impedance SEI . The ionic conductivities of LiPF 6 /LiFSI in PC/FEC/EMC (1/1/3 by vol.)…”

Section: Resultsmentioning

confidence: 99%

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Disassociating Lithium Salts in Deep Eutectic Solvents and Inhibiting Aluminum Corrosion for Low-Temperature Lithium–Metal Batteries

Chen,

Wang,

Fan

et al. 2024

Energy Fuels

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Low-temperature lithium-ion (Li-ion) batteries necessitate high-disassociation Li salts in low melting point solvents to favor transport kinetics. While lithium bis-(fluorosulfonyl)imide (LiFSI) is being developed for low-temperature electrolytes due to its weakly coordinated anion that enables a high dissociation constant, the deep eutectic solvents (DESs) benefit electrolyte mobility. Such salt and solvent combination is expected to address challenges of freezing electrolytes, low charge carriers, and sluggish ion transport across interfaces encountered under subzero temperature conditions. However, LiFSI corrodes the aluminum (Al) foil and disconnects electron pathways between the active material and the Al current collector, endangering battery stability at high voltages. Herein, the strongly coordinated anion (nitride, NO 3 − ) is introduced into the DESs by high-dielectric-constant dimethyl sulfoxide (DMSO) to inhibit Al corrosion. The Al anodic voltage in Li||Al cells is extended to 4.6 V (vs Li + /Li). This rational-designed electrolyte enables the cell with an impressive low-temperature performance even at a high areal loading of 4.5 mAh cm −2 . The cell equipped with this electrolyte can be cycled over 200 cycles at −20 °C with inconspicuous capacity degradation. This work adopts disassociating Li salts in DESs and inhibiting Al corrosion, which is expected to enrich the fundamentals of mediating Li + transport and Al corrosion to promote lowtemperature Li-metal battery performances.

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Section: Resultsmentioning

confidence: 99%

“…The FEC acts as a film-forming additive to facilitate the formation of low-impedance SEI. 47 The ionic conductivities of LiPF 6 /LiFSI in PC/FEC/EMC (1/1/3 by vol.) are plotted as the function of the reciprocal of temperature, showing a greater value for the LiFSI electrolyte, indicating more rapid ionic conductivity (Figure 1d).…”

Section: Resultsmentioning

confidence: 99%

Disassociating Lithium Salts in Deep Eutectic Solvents and Inhibiting Aluminum Corrosion for Low-Temperature Lithium–Metal Batteries

Chen,

Wang,

Fan

et al. 2024

Energy Fuels

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“…Characterizing the kinetics‐limited process is crucial in strategizing targeted approaches for enhancing battery performance in low‐temperature conditions. [ 84 ] In most cases, it's the charge‐transfer kinetics at the interface layer that stands as the dominant rate‐limiting factor. [ 85 ] Especially at LTs, nearly all the constraining factors are interfacial reactions predominantly governed by the SEI: [ 86 ] Restricted diffusion of Na + within both the electrolyte and SEI.…”

Section: Temperature Dominance Over Materials Performancementioning

confidence: 99%

Challenges and Breakthroughs in Enhancing Temperature Tolerance of Sodium‐Ion Batteries

Che,

Wu,

et al. 2024

Advanced Materials

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Lithium‐based batteries (LBBs) are highly researched and recognized as a mature electrochemical energy storage (EES) system in recent years. However, their stability and effectiveness are primarily confined to room temperature conditions. At temperatures significantly below 0 °C or above 60 °C, LBBs experience substantial performance degradation. Under such challenging extreme contexts, sodium‐ion batteries (SIBs) emerge as a promising complementary technology, distinguished by their fast dynamics at low temperature region and superior safety under elevated temperatures. Notably, developing SIBs suitable for wide‐temperature usage still presents significant challenges, particularly for specific applications such as electric vehicles, renewable energy storage, and deep‐space/polar explorations, which requires a thorough understanding of how SIBs perform under different temperature conditions. By reviewing the development of wide‐temperature SIBs, we systematically and comprehensively analyze the influence of temperature on the parameters related to battery performance, such as reaction constant, charge transfer resistance, etc. The review emphasizes challenges encountered by SIBs in both low and high temperatures while exploring recent advancements in SIB materials, specifically focusing on strategies to enhance battery performance across diverse temperature ranges. Overall, insights gained from these studies will drive the development of SIBs that can handle the challenges posed by diverse and harsh climates.This article is protected by copyright. All rights reserved

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“…They pose a substantial problem as they can lead to internal short circuits, reduced battery life, and, in severe cases, safety hazards [13]. The growth of lithium dendrites is primarily attributed to uneven electrodeposition [14], where lithium ions are preferentially deposited at specific sites on the lithium metal electrode, causing localized protrusions [15]. Effectively mitigating or preventing the formation of lithium dendrites is a critical focus of research in the development of safe and efficient LMBs.…”

Section: Introductionmentioning

confidence: 99%

Exploring steric and electronic effects in tailoring lithium-ion solvation using engineered ether solvents through molecular dynamics simulations

Yuan,

Du,

et al. 2024

J. Phys.: Condens. Matter

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Lithium-metal batteries, distinguished by their exceptional energy density, emerge as a viable candidate for addressing future energy storage demands. Despite this, the broader integration of lithium-metal batteries is hindered by the intrinsic instability present between lithium metal and conventional liquid lithium electrolytes, which were initially engineered for graphite anodes in lithium-ion batteries. Contemporary research highlights the critical role of electrolyte engineering in harnessing the full potential of lithium-metal batteries. A prominent strategy in this realm is the fluorination of solvent molecules, with a particular focus on those belonging to the ether category. However, achieving a holistic understanding of the myriad factors influencing the molecular design of solvents remains a challenging endeavor. In this study, we investigate four solvents synthesized from Dimethoxyethane (DME) employing molecular dynamics simulations. These solvents are methodically modified by either incorporating additional alkyl groups or through fluorination. Our analysis specifically focuses on two pivotal aspects: the steric effects induced by the integration of larger alkyl chains, and the electronic effects resulting from fluorination. We conduct an in-depth examination of the stability, ion transport properties, and solvation dynamics displayed by these novel solvents. Our findings highlight the significant influence of modifying both steric and electronic properties of solvent molecules on the solvation behavior of Li+ ions. This modification notably affects the coordination intensity and the interaction mechanism between Li+ ions and solvation sites within the first solvation shell, offering vital insights into the variations in ion transport characteristics across different electrolytes.

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Ambiently fostering solid electrolyte interphase for low-temperature lithium metal batteries

Cited by 20 publications

References 46 publications

Disassociating Lithium Salts in Deep Eutectic Solvents and Inhibiting Aluminum Corrosion for Low-Temperature Lithium–Metal Batteries

Disassociating Lithium Salts in Deep Eutectic Solvents and Inhibiting Aluminum Corrosion for Low-Temperature Lithium–Metal Batteries

Challenges and Breakthroughs in Enhancing Temperature Tolerance of Sodium‐Ion Batteries

Exploring steric and electronic effects in tailoring lithium-ion solvation using engineered ether solvents through molecular dynamics simulations

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