Quantitative determination of lithium depletion during rapid cycling in sulfide-based all-solid-state batteries
- Quantitative determination of lithium depletion during rapid cycling in sulfide-based all-solid-state batteries
- 이종호; 김형철; 정경윤; 지호일; 윤경중; 김지수; 신성수; 최성준
- all-solid-state battery; sulfide; solid electrolyte; impedance analysis; dristribution of relaxation times
- Issue Date
- Chemical communications
- VOL 57-3456
- 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.
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