Issue 28, 2021

Quantitative determination of lithium depletion during rapid cycling in sulfide-based all-solid-state batteries

Abstract

We propose a promising electrochemical analysis tool based on the distribution of relaxation times (DRT) to quantify interfacial resistances towards a comprehensive understanding of complex solid-state interfacial phenomena in sulfide-based all-solid-state batteries (ASSBs). Using DRT-assisted impedance analysis, we identify a new resistance component in the range of 102–103 Hz of 3.5 and 0.9 Ω in the absence and presence of a LiNbO3 layer, respectively, at 1C-rate. Experimental and computational studies confirm that this interfacial resistance results from lithium depletion in sulfide solid electrolytes. Furthermore, we expect our approach to provide new insights into complex interfacial phenomena in ASSBs.

Graphical abstract: Quantitative determination of lithium depletion during rapid cycling in sulfide-based all-solid-state batteries

Supplementary files

Article information

Article type
Communication
Submitted
27 Dec 2020
Accepted
03 Mar 2021
First published
09 Mar 2021

Chem. Commun., 2021,57, 3453-3456

Quantitative determination of lithium depletion during rapid cycling in sulfide-based all-solid-state batteries

S. S. Shin, J. Kim, S. Choi, H. Ji, K. J. Yoon, J. Lee, K. Y. Chung and H. Kim, Chem. Commun., 2021, 57, 3453 DOI: 10.1039/D0CC08367D

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