Comparative performance of ex situ artificial solid electrolyte interphases for Li metal batteries with liquid electrolytes
Francesca Lorandi,
Tong Liu,
Marco Fantin,
Joe Manser,
Ahmed Al-Obeidi,
Michael Zimmerman,
Krzysztof Matyjaszewski,
Jay F. Whitacre
Affiliations
Francesca Lorandi
Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA; Corresponding author
Tong Liu
Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
Marco Fantin
Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA
Joe Manser
Ionic Materials, Inc., 10-L, Commerce Way, Woburn, MA 01801, USA
Ahmed Al-Obeidi
Ionic Materials, Inc., 10-L, Commerce Way, Woburn, MA 01801, USA
Michael Zimmerman
Ionic Materials, Inc., 10-L, Commerce Way, Woburn, MA 01801, USA
Krzysztof Matyjaszewski
Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA; Corresponding author
Jay F. Whitacre
Department of Mechanical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA; Scott Institute for Energy Innovation, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA; Corresponding author
Summary: The design of artificial solid electrolyte interphases (ASEIs) that overcome the traditional instability of Li metal anodes can accelerate the deployment of high-energy Li metal batteries (LMBs). By building the ASEI ex situ, its structure and composition is finely tuned to obtain a coating layer that regulates Li electrodeposition, while containing morphology and volumetric changes at the electrode. This review analyzes the structure-performance relationship of several organic, inorganic, and hybrid materials used as ASEIs in academic and industrial research. The electrochemical performance of ASEI-coated electrodes in symmetric and full cells was compared to identify the ASEI and cell designs that enabled to approach practical targets for high-energy LMBs. The comparative performance and the examined relation between ASEI thickness and cell-level specific energy emphasize the necessity of employing testing conditions aligned with practical battery systems.
