Table 1 Summary of SEI compositions, chemical shifts of deposited lithium and the relative ratio of total accumulated SEI-Li/dead Li, in four different SSEs

From: Understanding the failure process of sulfide-based all-solid-state lithium batteries via operando nuclear magnetic resonance spectroscopy

SSEs

SEI composition

SEI-Li ratio

Chemical shift of deposited Li

Dead Li ratio

LGPS

Li2S, Li3P, Li-Ge alloy18

100%

n/a

0%

LSiPSCl

Li2S, Si2S66-, P2S64-

65%

227 ppm

35%

LPS

Li2S, Li3P21

33%

231 ppm

67%

LPSCl

Li2S, Li3P, LiCl20

17%

237 ppm

83%