Directing SEI formation on Si-based electrodes using atomic layer deposition

Supti Das; Anders Brennhagen; Carmen Cavallo; Veronica Anne-Line Kathrine Killi; Ingvild Julie Thue Jensen; Annett Thøgersen; Jan Petter Mæhlen; Samson Yuxiu Lai; Ola Nilsen; Alexey Y Koposov

doi:10.1039/d4cc05458j

Directing SEI formation on Si-based electrodes using atomic layer deposition

Chem Commun (Camb). 2024 Nov 27. doi: 10.1039/d4cc05458j. Online ahead of print.

Affiliations

¹ Centre for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, PO Box 1033, Blindern, 0315, Oslo, Norway. alexey.koposov@kjemi.uio.no.
² SINTEF Industry, Materials Physics, Forskningsveien 1, 0373 Oslo, Norway.
³ Department of Battery Technology, Institute for Energy Technology (IFE), Instituttveien 18, 2007, Kjeller, Norway.

PMID: 39600299
DOI: 10.1039/d4cc05458j

Abstract

The design of artificial solid eletroctrolyte interphase is an important task to minimize capacity losses in Li-ion batteries. Herein, TiO₂ created through atomic layer deposition was used as an artificial SEI on Si nanoparticles. Such coating led to substantial improvement of cycling stability when evaluated with FEC-free electrolyte.