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

Title
Quantitative determination of lithium depletion during rapid cycling in sulfide-based all-solid-state batteries
Authors
이종호김형철정경윤지호일윤경중김지수신성수최성준
Keywords
all-solid-state battery; sulfide; solid electrolyte; impedance analysis; dristribution of relaxation times
Issue Date
2021-04
Publisher
Chemical communications
Citation
VOL 57-3456
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 X 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.
URI
http://pubs.kist.re.kr/handle/201004/73027
ISSN
1359-7345
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KIST Publication > Article
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