Strategies towards enabling lithium metal in batteries: Interphases and electrodes

Birger Horstmann, Jiayan Shi, Rachid Amine, Martin Werres, Xin He, Hao Jia, Florian Hausen, Isidora Cekic-Laskovic, Simon Wiemers-Meyer, Jeffrey Lopez, Diego Galvez-Aranda, Florian Baakes, Dominic Bresser, Chi Cheung Su, Yaobin Xu, Wu Xu, Peter Jakes, Rüdiger A. Eichel, Egbert Figgemeier, Ulrike KrewerJorge M. Seminario, Perla B. Balbuena, Chongmin Wang, Stefano Passerini, Yang Shao-Horn, Martin Winter, Khalil Amine, Robert Kostecki, Arnulf Latz*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

29 Scopus citations

Abstract

Despite the continuous increase in capacity, lithium-ion intercalation batteries are approaching their performance limits. As a result, research is intensifying on next-generation battery technologies. The use of a lithium metal anode promises the highest theoretical energy density and enables use of lithium-free or novel high-energy cathodes. However, the lithium metal anode suffers from poor morphological stability and Coulombic efficiency during cycling, especially in liquid electrolytes. In contrast to solid electrolytes, liquid electrolytes have the advantage of high ionic conductivity and good wetting of the anode, despite the lithium metal volume change during cycling. Rapid capacity fade due to inhomogeneous deposition and dissolution of lithium is the main hindrance to the successful utilization of the lithium metal anode in combination with liquid electrolytes. In this perspective, we discuss how experimental and theoretical insights can provide possible pathways for reversible cycling of two-dimensional lithium metal. Therefore, we discuss improvements in the understanding of lithium metal nucleation, deposition, and stripping on the nanoscale. As the solid-electrolyte interphase (SEI) plays a key role in the lithium morphology, we discuss how the proper SEI design might allow stable cycling. We highlight recent advances in conventional and (localized) highly concentrated electrolytes in view of their respective SEIs. We also discuss artificial interphases and three-dimensional host frameworks, which show prospects of mitigating morphological instabilities and suppressing large shape change on the electrode level.

Original languageEnglish (US)
Pages (from-to)5289-5314
Number of pages26
JournalEnergy and Environmental Science
Volume14
Issue number10
DOIs
StatePublished - Oct 2021
Externally publishedYes

ASJC Scopus subject areas

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution

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