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

doi:10.1016/j.isci.2021.102578

Comparative performance of ex situ artificial solid electrolyte interphases for Li metal batteries with liquid electrolytes

iScience. 2021 May 21;24(6):102578. doi: 10.1016/j.isci.2021.102578. eCollection 2021 Jun 25.

Authors

Francesca Lorandi¹, Tong Liu¹, Marco Fantin¹, Joe Manser², Ahmed Al-Obeidi², Michael Zimmerman², Krzysztof Matyjaszewski¹, Jay F Whitacre^{3

4}

Affiliations

¹ Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA.
² Ionic Materials, Inc., 10-L, Commerce Way, Woburn, MA 01801, USA.
³ Department of Mechanical Engineering, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA.
⁴ Scott Institute for Energy Innovation, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, PA 15213, USA.

Abstract

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.

Keywords: electrochemical energy storage; electrochemistry; energy materials; materials chemistry.

Publication types

Review