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†

Supti Das,^a Anders Brennhagen,^a Carmen Cavallo,‡^a Veronica Anne-Line Kathrine Killi,^a Ingvild Julie Thue Jensen,^b Annett Thøgersen,^b Jan Petter Mæhlen,^c Samson Yuxiu Lai,

^c Ola Nilsen

^a and Alexey Y. Koposov

*^ac

Author affiliations

* Corresponding authors

^a Centre for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, PO Box 1033, Blindern, Oslo, Norway
E-mail: alexey.koposov@kjemi.uio.no

^b SINTEF Industry, Materials Physics, Forskningsveien 1, 0373 Oslo, Norway

^c Department of Battery Technology, Institute for Energy Technology (IFE), Instituttveien 18, Kjeller, Norway

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.

This article is part of the themed collection: Electrochemical energy storage

Chemical Communications

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

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

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