Effect of current density on the solid electrolyte interphase formation at the lithium∣Li<sub>6</sub>PS<sub>5</sub>Cl interface.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 36433957.
- Also identified by DOI 10.1038/s41467-022-34855-9 and PMC identifier 9700819.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
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 Li<sub>6</sub>PS<sub>5</sub>Cl 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., Li<sub>3</sub>P-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.