In situ and operando characterisation of Li metal – Solid electrolyte interfaces

Narayanan, Sudarshan; Gibson, Joshua S.; Aspinall, Jack; Weatherup, Robert S.; Pasta, Mauro

doi:10.1016/j.cossms.2021.100978

Cited by 25 publications

(19 citation statements)

References 92 publications

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“…With a strong reduction potential of −3.04 V (vs. standard hydrogen electrode), Li typically reacts with solid electrolytes (SEs) to form kinetically and thermodynamically unstable interphases 6 , 7 . Combined with other morphological, structural, and chemo-mechanical processes at the Li–SE interface, gradual cell performance degradation and failure follow as a consequence of poor electrode-electrolyte contact, current focusing, mechanical fracture of the SE, inhomogeneous plating/stripping, Li filamentary growth and void formation 6 , 8 – 11 .…”

Section: Introductionmentioning

confidence: 99%

Effect of current density on the solid electrolyte interphase formation at the lithium∣Li6PS5Cl interface

et al. 2022

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Understanding the chemical composition and morphological evolution of the solid electrolyte interphase (SEI) formed at the interface between the lithium metal electrode and an inorganic solid-state electrolyte is crucial for developing reliable all-solid-state lithium batteries. To better understand the interaction between these cell components, we carry out X-ray photoemission spectroscopy (XPS) measurements during lithium plating on the surface of a Li6PS5Cl solid-state electrolyte pellet using an electron beam. The analyses of the XPS data highlight the role of Li plating current density on the evolution of a uniform and ionically conductive (i.e., Li3P-rich) SEI capable of decreasing the electrode∣solid electrolyte interfacial resistance. The XPS findings are validated via electrochemical impedance spectrsocopy measurements of all-solid-state lithium-based cells.

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Section: Introductionmentioning

confidence: 99%

Effect of current density on the solid electrolyte interphase formation at the lithium∣Li6PS5Cl interface

et al. 2022

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“…Many studies have thus focussed on attempting to understand the nature of the reactions that proceed, to inform future battery development. 6,[10][11][12][13][14][15] The exact nature of the interaction layers formed, and therefore the reaction mechanisms, are dependent upon the electrolyte used. For example, LLZO (Li 7 La 3 Zr 2 O 12 ) garnets have been suggested to form oxygen decient layers, 4,16 sulphide glasses to form lithium sulphides and phosphides, 17,18 while lithium phosphorus oxynitride (LiPON) can react to form phosphides and nitrides.…”

Section: Introductionmentioning

confidence: 99%

Gently does it!: in situ preparation of alkali metal–solid electrolyte interfaces for photoelectron spectroscopy

et al. 2022

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“…To this end, it will be of great benefit to implement in situ characterization techniques such as quartz crystal microbalance (QCM), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, AFM, XPS, SEM, TEM, etc. [ 134 ]. Additionally, although it has been qualitatively proven that ALD/MLD coated alkali metal electrodes effectively improve the electrochemical performances in various cells, there is still minimal quantified information about mechanical, chemical, and electrical properties of these ALD/MLD coating layers.…”

Section: Discussionmentioning

confidence: 99%

Atomic and Molecular Layer Deposition as Surface Engineering Techniques for Emerging Alkali Metal Rechargeable Batteries

2022

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Alkali metals (lithium, sodium, and potassium) are promising as anodes in emerging rechargeable batteries, ascribed to their high capacity or abundance. Two commonly experienced issues, however, have hindered them from commercialization: the dendritic growth of alkali metals during plating and the formation of solid electrolyte interphase due to contact with liquid electrolytes. Many technical strategies have been developed for addressing these two issues in the past decades. Among them, atomic and molecular layer deposition (ALD and MLD) have been drawing more and more efforts, owing to a series of their unique capabilities. ALD and MLD enable a variety of inorganic, organic, and even inorganic-organic hybrid materials, featuring accurate nanoscale controllability, low process temperature, and extremely uniform and conformal coverage. Consequently, ALD and MLD have paved a novel route for tackling the issues of alkali metal anodes. In this review, we have made a thorough survey on surface coatings via ALD and MLD, and comparatively analyzed their effects on improving the safety and stability of alkali metal anodes. We expect that this article will help boost more efforts in exploring advanced surface coatings via ALD and MLD to successfully mitigate the issues of alkali metal anodes.

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In situ and operando characterisation of Li metal – Solid electrolyte interfaces

Cited by 25 publications

References 92 publications

Effect of current density on the solid electrolyte interphase formation at the lithium∣Li6PS5Cl interface

Effect of current density on the solid electrolyte interphase formation at the lithium∣Li6PS5Cl interface

Gently does it!: in situ preparation of alkali metal–solid electrolyte interfaces for photoelectron spectroscopy

Atomic and Molecular Layer Deposition as Surface Engineering Techniques for Emerging Alkali Metal Rechargeable Batteries

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