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

ABSTRACT: 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.

SUBMITTER: Narayanan S 

PROVIDER: S-EPMC9700819 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature

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Effect of current density on the solid electrolyte interphase formation at the lithium∣Li<sub>6</sub>PS<sub>5</sub>Cl interface.

Narayanan Sudarshan S   Ulissi Ulderico U   Gibson Joshua S JS   Chart Yvonne A YA   Weatherup Robert S RS   Pasta Mauro M  

Nature communications 20221124 1

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 Li<sub>6</sub>PS<sub>5</sub>Cl solid-state e  ...[more]

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