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Kühn et al. Energy Mater 2023;3:300020 Energy Materials
DOI: 10.20517/energymater.2023.07

Article Open Access

Impact of in coin cell atmosphere on lithium metal

battery performance

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1
1
1,2
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Sebastian P. Kühn , Matthias Weiling , Diddo Diddens , Masoud Baghernejad , Martin Winter , Isidora
Cekic-Laskovic 1, *
1
Helmholtz-Institute Münster, Forschungszentrum Jülich GmbH, Münster 48149, Germany.
2
MEET Battery Research Center, University of Münster, Münster 48149, Germany.
* Correspondence to: Dr. Isidora Cekic-Laskovic, Ionics in Energy Storage (IEK-12), Helmholtz-Institute Münster,
Forschungszentrum Jülich GmbH, Corrensstrasse 48, Münster 48149, Germany. E-mail: i.cekic-laskovic@fz-juelich.de
How to cite this article: Kühn SP, Weiling M, Diddens D, Baghernejad M, Winter M, Cekic-Laskovic I. Impact of in coin cell
atmosphere on lithium metal battery performance. Energy Mater 2023;3:300020.
https://dx.doi.org/10.20517/energymater.2023.07
Received: 8 Feb 2023 First Decision: 3 Mar 2023 Revised: 20 Mar 2023 Accepted: 28 Mar 2023 Published: 8 May 2023

Academic Editor: Jia-Qi Huang Copy Editor: Fangling Lan Production Editor: Fangling Lan

Abstract
Research on lithium metal as a high-capacity anode for future lithium metal batteries (LMBs) is currently at an all-
time high. To date, the different influences of a highly pure argon glovebox (GB) and an industry-relevant ambient
dry room (DR) atmosphere have received little attention in the scientific community. In this paper, we report on the
impact of in coin cell atmosphere (ICCA) on the performance of an LMB as well as its interphase characteristics and
properties in combination with three organic carbonate-based electrolytes with and without two well-known
interphase-forming additives, namely fluoroethylene carbonate (FEC) and vinylene carbonate (VC). The results
obtained from this carefully executed systematic study show a substantial impact of the ICCA on solid electrolyte
interphase (SEI) resistance (R ) and lithium stripping/plating homogeneity. In a transition metal cathode
SEI
(NMC811) containing LMBs, a DR ICCA results in an up to 50% increase in lifetime due to the improved chemical
composition of the cathode electrolyte interphase (CEI). Furthermore, different impacts on electrode
characteristics and cell performance were observed depending on the utilized functional additive. Since this study
focuses on a largely overlooked influential factor of LMB performance, it highlights the importance of comparability
and transparency in published research and the importance of taking differences between research and industrial
environments into consideration in the aim of establishing and commercializing LMB cell components.

© The Author(s) 2023. Open Access This article is licensed under a Creative Commons Attribution 4.0
International License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, sharing,
adaptation, distribution and reproduction in any medium or format, for any purpose, even commercially, as
long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and
indicate if changes were made.

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