Investigations of the Solid Electrolyte Interphase Using X‐Ray Photoelectron Spectroscopy In situ Experiment on the Lithium‐Based Solid Electrolyte LiPSON

Michel, Fabian; Becker, Martin; Janek, Jürgen; Polity, A.

doi:10.1002/pssb.201900336

Cited by 11 publications

(15 citation statements)

References 26 publications

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“…The elemental composition and the measured ionic conductivity (next paragraph) of A2 as a reference sample are in perfect agreement with published values. [21,22] The trends within the oxygen series are also in good agreement with the reported correlation between nitrogen content and conductivity. [33,34] Consistently, the LiPSON films of the B and C series showed a higher oxygen concentration than reported before, as a consequence of the adapted sputtering conditions of an increased oxygen flow.…”

Section: Composition Of Lipson Prepared Under the Modified Conditionssupporting

confidence: 86%

Investigation of Sputter‐Deposited Thin Films of Lithium Phosphorous Sulfuric Oxynitride (LiPSON) as Solid Electrolyte for Electrochromic Devices

Lupó

Michel

Kuhl

et al. 2021

Physica Status Solidi (b)

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Established electrochromic (EC) devices consist of a cathodically coloring material (mostly tungsten oxide, WO x ), a liquid or polymeric gel electrolyte, and an anodically coloring or noncoloring counter layer, all sandwiched between transparent conducting oxide (TCO) layers and glass. [1] The electrolyte is a crucial component for functionality and safety, a short circuit by a conducting path through it, for example, can damage the whole device. The current standard polymeric gel electrolyte in commercial smart windows based on WO x can lead to long-term instability by delamination and shrinkage. [2][3][4] As an alternative, solid electrolytes already have reached considerable attention in the research and development of all-solid-state thin-film batteries because of significant advantages compared with liquid or polymer-based electrolytes. [5,6] Without a liquid component, elaborate device sealing is not needed and packaging can be simplified. [7,8] Furthermore, solid inorganic electrolytes provide a high mechanical and thermal stability, which can be of considerable advantage also when used in large-area EC windows. [6,9] Another benefit is provided by an improved electrochemical stability under conditions of changing temperatures from day to night and from summer to winter in combination with altered solar radiation. [9] Among appropriate inorganic solid electrolytes, lithium phosphorous oxynitride (LiPON) can be considered a well-established material for use in batteries and EC devices. [10][11][12][13][14][15][16][17] LiPON-based electrolytes show great potential to improve several characteristics of devices because of the inherent safety, fast charge transport, good thermal, and outstanding mechanical stability. [10,18] Modifications of LiPON with different additional elements were tested to improve specific characteristics of pure LiPON thin films. [19] Recently, modified versions of LiPON containing silicon (LiSiPON) or sulfur (LiPSON) with improved electronic characteristics were introduced. [20,21] In LiSiPON, ionic conductivity increased with increasing silicon content but the transparency in the range of visible light decreased significantly. Therefore, LiSiPON appears disadvantageous for EC devices. In LiPSON,

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Section: Composition Of Lipson Prepared Under the Modified Conditionssupporting

confidence: 86%

Investigation of Sputter‐Deposited Thin Films of Lithium Phosphorous Sulfuric Oxynitride (LiPSON) as Solid Electrolyte for Electrochromic Devices

Lupó

Michel

Kuhl

et al. 2021

Physica Status Solidi (b)

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“…Like XAS, this technique can provide element specificity for resonant core electrons, and one can obtain oxidation state and coordination environment information, which can aid in phase identification. The most common XPS measurements are performed under UHV, and while this may be an issue for in situ studies of organic liquid electrolyte LIBs, the UHV requirement does not pose a significant barrier for studying SSBs 46,119 . As demonstrated previously, in situ XPS can be used to research and determine the type of interface formed when electrodes are paired with various SSEs 46,119 …”

Section: In Situ Surface‐sensitive X‐ray Spectroscopy To Study Composition and Electronic Structural Changesmentioning

confidence: 99%

“…The most common XPS measurements are performed under UHV, and while this may be an issue for in situ studies of organic liquid electrolyte LIBs, the UHV requirement does not pose a significant barrier for studying SSBs 46,119 . As demonstrated previously, in situ XPS can be used to research and determine the type of interface formed when electrodes are paired with various SSEs 46,119 …”

Section: In Situ Surface‐sensitive X‐ray Spectroscopy To Study Composition and Electronic Structural Changesmentioning

confidence: 99%

In situ characterizations of solid–solid interfaces in solid‐state batteries using synchrotron X‐ray techniques

2021

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The solid–solid electrode–electrolyte interface represents an important component in solid‐state batteries (SSBs), as ionic diffusion, reaction, transformation, and restructuring could all take place. As these processes strongly influence the battery performance, studying the evolution of the solid–solid interfaces, particularly in situ during battery operation, can provide insights to establish the structure–property relationship for SSBs. Synchrotron X‐ray techniques, owing to their unique penetration power and diverse approaches, are suitable to investigate the buried interfaces and examine structural, compositional, and morphological changes. In this review, we will discuss various surface‐sensitive synchrotron‐based scattering, spectroscopy, and imaging methods for the in situ characterization of solid–solid interfaces and how this information can be correlated to the electrochemical properties of SSBs. The goal is to overview the advantages and disadvantages of each technique by highlighting representative examples, so that similar strategies can be applied by battery researchers and beyond to study similar solid‐solid interface systems.

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“…In the case of the anode interface, when SSEs come into contact with anode active materials such as carbon and Li, the decomposition of SSEs occurs, producing by-products with poor electrochemical properties and decreasing the capacity and cycle life rapidly. [51][52][53] SSEs react with carbon to produce electron-conducting phases that not only decrease the ionic conductivity but also consume the SSEs. [18] Frequent striping of Li during charging/discharging cycles also brings internal stresses in the ceramic electrolyte, and accumulation of these stresses may peel off the electrode from the SSE interface, causing cell failure or short circuit.…”

Section: Sulfide Solid Electrolytes and Current Problemsmentioning

confidence: 99%

Current Trends in Nanoscale Interfacial Electrode Engineering for Sulfide‐Based All‐Solid‐State Li‐Ion Batteries

et al. 2021

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All‐solid‐state Li‐ion batteries (ASSLBs) have been a topic of interest in the recent two decades for use in energy storage technologies. Among various types of solid electrolytes, sulfide‐based solid electrolytes (SSEs) have been regarded as the most promising electrolytes for practical ASSLBs due to their high ionic conductivity (>1 mS cm−1) and the possibility of high energy density cells (>500 Wh kg−1) using a currently available high capacity oxide cathode and a Li‐metal anode, as well as their nonflammable nature. However, SSEs are known to suffer from: 1) low electrochemical stability window; 2) parasitic interfacial reactions at oxide cathodes; 3) electrochemomechanical degradation at the interface; and 4) dendritic growth at bare Li‐metal anodes. Herein, a comprehensive review of specific strategies for high energy density ASSLBs is provided, focusing on the nanoscale interfacial engineering on oxide‐based cathode materials and Li‐metal anodes. Recent progresses in in situ‐based complex interfacial coatings, deposition techniques for synthesizing complex core–shell structures at oxide‐based cathode active materials, and lithiophilic seeding followed by dendrite protective coatings at anodes are mainly summarized. Finally, the perspectives for the development of high energy density sulfide‐based ASSLBs are highlighted.

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Investigations of the Solid Electrolyte Interphase Using X‐Ray Photoelectron Spectroscopy In situ Experiment on the Lithium‐Based Solid Electrolyte LiPSON

Cited by 11 publications

References 26 publications

Investigation of Sputter‐Deposited Thin Films of Lithium Phosphorous Sulfuric Oxynitride (LiPSON) as Solid Electrolyte for Electrochromic Devices

Investigation of Sputter‐Deposited Thin Films of Lithium Phosphorous Sulfuric Oxynitride (LiPSON) as Solid Electrolyte for Electrochromic Devices

In situ characterizations of solid–solid interfaces in solid‐state batteries using synchrotron X‐ray techniques

Current Trends in Nanoscale Interfacial Electrode Engineering for Sulfide‐Based All‐Solid‐State Li‐Ion Batteries

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