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

DOI: 10.1038/s41467-022-34855-9 DOI Help

Authors: Sudarshan Narayanan (University of Oxford; The Faraday Institution) , Ulderico Ulissi (Nissan Technical Centre Europe) , Joshua S. Gibson (University of Oxford; The Faraday Institution) , Yvonne A. Chart (University of Oxford; The Faraday Institution) , Robert S Weatherup (University of Oxford; The Faraday Institution) , Mauro Pasta (University of Oxford; The Faraday Institution)
Co-authored by industrial partner: Yes

Type: Journal Paper
Journal: Nature Communications , VOL 13

State: Published (Approved)
Published: November 2022
Diamond Proposal Number(s): 25807

Open Access Open Access

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.

Diamond Keywords: Batteries; Solid-State Batteries (SSB); Electric Vehicles

Subject Areas: Materials, Chemistry, Energy


Instruments: I09-Surface and Interface Structural Analysis

Added On: 30/11/2022 08:40

Documents:
s41467-022-34855-9.pdf

Discipline Tags:

Surfaces Energy Storage Energy Physics Physical Chemistry Energy Materials Chemistry Materials Science interfaces and thin films

Technical Tags:

Spectroscopy X-ray Photoelectron Spectroscopy (XPS) Hard X-ray Photoelectron Spectroscopy (HAXPES)