Issue 10, 2020

Pressure effects on sulfide electrolytes for all solid-state batteries

Abstract

All solid-state batteries are believed to be safer than their liquid counterparts owing to their use of nonflammable solid electrolytes. Nevertheless, unlike liquid electrolyte batteries, stack pressure is required during cycling to avoid contact losses between the electrodes and the solid electrolyte. Although recent studies have shown stack pressures to affect the capacity utilization of alloying anodes, an investigation of the effect of stack pressures on solid-state battery cyclability has not been performed so far. In this work, the effects of both initial fabrication pressure and operating stack pressure on the electrolyte's ionic conductivity and battery performance have been analyzed; the results show that initial fabrication pressure directly affects the porosity of the electrolyte and therefore the overall performance of the cell. Low operating stack pressure reduces the apparent ionic conductivity due to poor contact between the electrolyte and current collectors, but does not detrimentally affect the cyclability of solid-state batteries. These results can explain inconsistencies in the literature and provide a guideline toward standardized solid-state battery testing conditions and proper reporting benchmarks of the performance of solid-state batteries.

Graphical abstract: Pressure effects on sulfide electrolytes for all solid-state batteries

Supplementary files

Article information

Article type
Communication
Submitted
24 Nov. 2019
Accepted
31 Janv. 2020
First published
06 Febr. 2020

J. Mater. Chem. A, 2020,8, 5049-5055

Author version available

Pressure effects on sulfide electrolytes for all solid-state batteries

J. Doux, Y. Yang, D. H. S. Tan, H. Nguyen, E. A. Wu, X. Wang, A. Banerjee and Y. S. Meng, J. Mater. Chem. A, 2020, 8, 5049 DOI: 10.1039/C9TA12889A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements