Artificial Solid Electrolyte Interphases for Lithium Metal Electrodes by Wet Processing: The Role of Metal Salt Concentration and Solvent Choice

Thanner, Katharina; Varzi, Alberto; Buchholz, Daniel; Sedlmaier, Stefan J.; Passerini, Stefano

doi:10.1021/acsami.0c08938

Cited by 46 publications

(37 citation statements)

References 34 publications

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“…Furthermore, the composition of the native SEI depends on the lithium provider and storage conditions and can vary between lithium batches. Cutting the lithium directly in the precursor solution ensures the artificial SEI being produced on top of pristine lithium and enables improved investigation of the artificial SEI [89] (Fig. 3b-iv).…”

Section: Artificial Seimentioning

confidence: 99%

Current status and future perspectives of lithium metal batteries

Varzi

Thanner

Scipioni

et al. 2020

Journal of Power Sources

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132

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Section: Artificial Seimentioning

confidence: 99%

Current status and future perspectives of lithium metal batteries

Varzi

Thanner

Scipioni

et al. 2020

Journal of Power Sources

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132

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“…Alloy coatings onto LMA via analogous methods were then reported by many later publications, all confirming that the artificial alloy interphase can stabilize LMA. 36,[74][75][76][77] In all these studies, the deposition morphology of Li was dramatically improved with the help of the Li-alloying interphase (Figure 3(D)), along with the plating/stripping efficiency. However, the interpretation of the working mechanism of the intermetallic interphases varies.…”

Section: Alloy-based Interphases For Lma In Lmbs With Organic Liquid Electrolytesmentioning

confidence: 94%

“…The ex situ solution coating of Li-alloying interphases can also be tailored to incorporate extra polymeric reinforcement. 73,75,77 Jiang et al demonstrated that a poly(tetramethylene ether glycol)-Li/Sn alloy hybrid SEI could be grown onto Li by employing SnCl 4 solution in THF as the treating precursor. SnCl 4 acts not only as the Sn source but also a Lewis acid catalyst for the cationic ring-opening polymerization of THF (Figure 3(I, J)).…”

Section: Alloy-based Interphases For Lma In Lmbs With Organic Liquid Electrolytesmentioning

confidence: 99%

Intermetallic interphases in lithium metal and lithium ion batteries

Sun

Peng

2021

InfoMat

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A robust electrode-electrolyte interface is the cornerstone for every battery system, as demonstrated in the meandering history of the development of Li-ion batteries (LIBs). In the thrust to replace the graphite anode with more energetic ones in LIBs, the effectual strategy for stabilizing the original graphiteelectrolyte interface becomes obsolete and a new anode-electrolyte interface needs reconfiguration. Unfortunately, this interface has become the Achilles' heel for those anodes, such as Li-metal anode (LMA) and Si-based anode owing to their excessive reductivity, enormous volume change, and so forth. Encouragingly, in the last decade, impressive progress has been made on taming these extremely unstable interfaces and on the solid-state batteries (SSBs) that are reported to be less susceptible to parasitic reactions. One of the distinguished strategies is the application of artificial Li-alloying intermetallic interphases onto the surface of LMA, via the direct introduction of foreign metals to the Li anode or indirect hetero-cations doping in the electrolyte, to regulate the Li deposition/ stripping behavior, which has markedly improved the stability of the LMAelectrolyte interface. In parallel, the intermetallic interphases are also witnessed to profoundly enhance the anode-solid electrolyte contact and the corresponding charge transfer kinetics in various SSBs. This review will provide a panoramic overview of the application of the intermetallic interphases at the anode-electrolyte interfaces in the lithium metal batteries (LMBs), SSBs, and also derivative works in the conventional LIBs, which will focus on different concepts, methodologies, and understandings from the encircled studies.

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“…[ 155 ] A ZnCl 2 ‐based layer on Li metal was formed via chemical grafting from tetrahydrofuran (THF) and ethylmethylcarbonate (EMC) containing organic solvent mixtures. [ 156 ] It was shown that such an Art‐SEI decreases the interfacial resistance by ≈80% and improves cycling stability as compared to untreated anodes.…”

Section: Production Methods—advantages Challenges and Effectivenessmentioning

confidence: 99%

Molecular Engineering Approaches to Fabricate Artificial Solid‐Electrolyte Interphases on Anodes for Li‐Ion Batteries: A Critical Review

Fedorov

Maletti

Heubner

et al. 2021

Advanced Energy Materials

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in further markets, such as electromobility and large-scale grid storage. Although LIBs offer high energy density and have reached a high level of maturity, there are still many technological challenges to meet established user habits and increasing demands. [1] Among the remaining challenges of LIBs, one of the most crucial issues is the electrochemical instability of anodes toward electrolytes. When using anode materials with favorably low electrode potentials close to Li/Li + , common liquid electrolytes are decomposed. Ideally, this leads to the formation of a stable so-called solid-electrolyte interphase (SEI), preventing further electrolyte decomposition and leading to stable cycling performance. Furthermore, the SEI has decisive influence on the charge/discharge kinetics of the battery, as this is where the Li-ions overcome the interface between the electrolyte and the electrode. Accordingly, the SEI is a key component that determines the performance of LIBs. The "natural SEI" that forms at the anode/electrolyte interface during initial cycling represents a thin layer made of salts, oxides, polymers. [2] The conceptual model of SEI was introduced by Peled in 1979 [3] and further developed by other groups. [4][5][6][7][8][9][10][11][12] According to this model, natural SEIs possess only ionic conductivity, while serving as a barrier to electron transfer. In this regard, the thickness and conformity of SEI An intrinsic challenge of Li-ion batteries is the instability of electrolytes against anode materials. For anodes with a favorably low operating potential, a solid-electrolyte interphase (SEI) formed during initial cycles provides stability, traded off for capacity consumption. The SEI is mainly determined by the anode material, electrolyte composition, and formation conditions. Its properties are typically adjusted by changing the liquid electrolyte's composition. Artificial SEIs (Art-SEIs) offer much more freedom to address and tune specific properties, such as chemical composition, impedance, thickness, and elasticity. Art-SEIs for intercalation, alloying, conversion and Li metal anodes have to fulfil varying requirements. In all cases, sufficient transport properties for Li-ions and (electro-)chemical stability must be guaranteed. Several approaches for Art-SEIs preparation have been reported: from simple casting and coating techniques to elaborated Phys-Chem modifications and deposition processes. This review critically reports on the promising approaches for Art-SEIs formation on different type of anode materials, focusing on methodological aspects. The specific requirements for each approach and material class, as well as the most effective strategies for Art-SEI coating, are discussed and a roadmap for further developments towards next-generation stable anodes are provided.

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Artificial Solid Electrolyte Interphases for Lithium Metal Electrodes by Wet Processing: The Role of Metal Salt Concentration and Solvent Choice

Cited by 46 publications

References 34 publications

Current status and future perspectives of lithium metal batteries

Current status and future perspectives of lithium metal batteries

Intermetallic interphases in lithium metal and lithium ion batteries

Molecular Engineering Approaches to Fabricate Artificial Solid‐Electrolyte Interphases on Anodes for Li‐Ion Batteries: A Critical Review

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