Multiscale operando X-ray investigations provide insights into electro-chemo-mechanical behavior of lithium intercalation cathodes

Su, Laisuo; Choi, Phillip; Nakamura, Nathan; Charalambous, Harry; Litster, Shawn; Ilavský, Ján; Reeja‐Jayan, B.

doi:10.1016/j.apenergy.2021.117315

Cited by 18 publications

(20 citation statements)

References 38 publications

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“…The physical dimension (d) of a feature can be derived from the scattering vector (q) based on the relationship, d = 2π/q. [35] Thus, the broad peak at 0.5-0.8 Å -1 indicates the formation of CIP and/or AGG clusters with a physical dimension of 7.9-12.6 Å. The observed phenomena are similar to the results observed for other high-concentration electrolytes.…”

Section: Characterization Of Bulk Electrolyte Propertiessupporting

confidence: 78%

Uncovering the Solvation Structure of LiPF₆‐Based Localized Saturated Electrolytes and Their Effect on LiNiO₂‐Based Lithium‐Metal Batteries

Zhao

et al. 2022

Advanced Energy Materials

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Electrolytes play a critical role in stabilizing highly reactive lithium‐metal anodes (LMAs) and high‐voltage cathodes for rechargeable lithium‐metal batteries (LMBs). Localized high concentration electrolytes (LHCEs) have achieved remarkable success in the context of LMBs. However, the state‐of‐the‐art LHCEs are based on LiFSI salt, which is prohibitively expensive. Here, the utility of low‐cost LiPF6 salt in localized saturated electrolytes (LSEs) with a series of solvents and diluents in LMBs with cobalt‐free LiNiO2 cathode is systematically explored. Experimental and theoretical analyses reveal that the unique solvation structure formed not only changes the distribution of solvents and anions but also alters the atom–atom distances within them, leading to different reduction and oxidation stabilities compared to low‐concentration electrolytes. In addition, LSEs help form LiF‐rich interphase layers on the LMA and LiNiO2 cathode, protecting the electrodes from degradation during cycling. Different LSEs also lead to differences in lithium plating morphology and impedance buildup during cycling, impacting the performance of LMBs. The solvent and diluent must be carefully selected for compatibility with a lithium salt when developing LHCEs and LSEs for LMBs.

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Section: Characterization Of Bulk Electrolyte Propertiessupporting

confidence: 78%

Uncovering the Solvation Structure of LiPF₆‐Based Localized Saturated Electrolytes and Their Effect on LiNiO₂‐Based Lithium‐Metal Batteries

Zhao

et al. 2022

Advanced Energy Materials

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Section: The Correlation Among the Three Challengesmentioning

confidence: 99%

In situcharacterization of lithium-metal anodes

et al. 2022

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“…Several aspects should be paid attention to: (1) in order to avoid c Operando transmission X-ray microscopy (TXM) has also been employed to visualize the morphological evolution of the electrodes. Laisuo et al monitored LiCoO 2 electrodes during the over-lithiation test [63]. The discharge curve of LiCoO 2 electrodes at a C/2 rate is shown in Figure 7c.…”

Section: Disassembly-based Analysismentioning

confidence: 99%

Recent Health Diagnosis Methods for Lithium-Ion Batteries

Guo

Pedersen

et al. 2022

Batteries

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Lithium-ion batteries have good performance and environmentally friendly characteristics, so they have great potential. However, lithium-ion batteries will age to varying degrees during use, and the process is irreversible. There are many aging mechanisms of lithium batteries. In order to better verify the internal changes of lithium batteries when they are aging, post-mortem analysis has been greatly developed. In this article, we summarized the electrical properties analysis and post-mortem analysis of lithium batteries developed in recent years and compared the advantages of varieties of both destructive and non-destructive methods, for example, open-circuit-voltage curve-based analysis, scanning electron microscopy, transmission electron microscopy, atomic force microscopy, X-ray photoelectron spectroscopy and X-ray diffraction. On this basis, new ideas could be proposed for predicting and diagnosing the aging degree of lithium batteries, at the same time, further implementation of these technologies will support battery life control strategies and battery design.

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Multiscale operando X-ray investigations provide insights into electro-chemo-mechanical behavior of lithium intercalation cathodes

Cited by 18 publications

References 38 publications

Uncovering the Solvation Structure of LiPF₆‐Based Localized Saturated Electrolytes and Their Effect on LiNiO₂‐Based Lithium‐Metal Batteries

Uncovering the Solvation Structure of LiPF₆‐Based Localized Saturated Electrolytes and Their Effect on LiNiO₂‐Based Lithium‐Metal Batteries

In situcharacterization of lithium-metal anodes

Recent Health Diagnosis Methods for Lithium-Ion Batteries

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Multiscale operando X-ray investigations provide insights into electro-chemo-mechanical behavior of lithium intercalation cathodes

Cited by 18 publications

References 38 publications

Uncovering the Solvation Structure of LiPF6‐Based Localized Saturated Electrolytes and Their Effect on LiNiO2‐Based Lithium‐Metal Batteries

Uncovering the Solvation Structure of LiPF6‐Based Localized Saturated Electrolytes and Their Effect on LiNiO2‐Based Lithium‐Metal Batteries

In situcharacterization of lithium-metal anodes

Recent Health Diagnosis Methods for Lithium-Ion Batteries

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Product

Resources

About

Uncovering the Solvation Structure of LiPF₆‐Based Localized Saturated Electrolytes and Their Effect on LiNiO₂‐Based Lithium‐Metal Batteries

Uncovering the Solvation Structure of LiPF₆‐Based Localized Saturated Electrolytes and Their Effect on LiNiO₂‐Based Lithium‐Metal Batteries