2019
DOI: 10.1021/acsami.8b19973
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Unraveling the Formation Mechanism of Solid–Liquid Electrolyte Interphases on LiPON Thin Films

Abstract: Most commercial lithium-ion batteries and other types of batteries rely on liquid electrolytes, which are preferred because of their high ionic conductivity, and facilitate fast charge-transfer kinetics at the electrodes. On the other hand, hybrid battery concepts that combine solid and liquid electrolytes might be needed to suppress unwanted shuttle effects in liquid electrolyte-only systems, in particular if mobile redox systems are involved in the cell chemistry. However, at the then newly introduced interf… Show more

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Cited by 30 publications
(40 citation statements)
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References 53 publications
(93 reference statements)
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“…Thereby, SLEI thickness of about 25 nm was observed after 24 h. The SLEI formation mechanism on "LiPON" was found to involve the quick deposition of a mostly covering interphase with some pinholes left, which are subsequently slowly filled, explaining the increase in the interphase resistance. In these experiments, a two-layer SLEI was observed, with one layer being attributed to inorganic lithium salts and the other to a presumably polymeric material [50].…”
Section: Solid/liquid Interfacesmentioning
confidence: 79%
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“…Thereby, SLEI thickness of about 25 nm was observed after 24 h. The SLEI formation mechanism on "LiPON" was found to involve the quick deposition of a mostly covering interphase with some pinholes left, which are subsequently slowly filled, explaining the increase in the interphase resistance. In these experiments, a two-layer SLEI was observed, with one layer being attributed to inorganic lithium salts and the other to a presumably polymeric material [50].…”
Section: Solid/liquid Interfacesmentioning
confidence: 79%
“…The interphase formation on "LiPON" thin films immersed in ether-based LEs was investigated using neutron reflectometry (NR), quartz crystal microbalance (QCM) and atomic force microscopy (AFM) measurements [50]. Thereby, SLEI thickness of about 25 nm was observed after 24 h. The SLEI formation mechanism on "LiPON" was found to involve the quick deposition of a mostly covering interphase with some pinholes left, which are subsequently slowly filled, explaining the increase in the interphase resistance.…”
Section: Solid/liquid Interfacesmentioning
confidence: 99%
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“…Early reports of LiPON suggested that the material was stable in contact with metallic Li over a stability window of 5.5 ± 0.2 V (Yu et al, 1997); however this has been questioned in subsequent studies. The propensity of LiPON to decompose when in contact with a number of different materials has been investigated, including metallic lithium (Motoyama et al, 2015(Motoyama et al, , 2018Sicolo et al, 2017;Westover et al, 2019), the ubiquitous LiCoO 2 cathode (Li et al, 2014;Schwöbel et al, 2015;Sicolo and Albe, 2016;Wang et al, 2016;Fingerle et al, 2017;Weiss et al, 2019), and the nickel manganese spinel (West et al, 2016;Thai and Lee, 2017;Lv et al, 2020). While one of LiPONs strengths as an electrolyte appears to be its resistance to lithium penetration (Westover et al, 2019), there are a number of interfacial reactions which yield gaseous evolution (Put et al, 2018) and resistive interfacial layers 2018with permission from the Royal Society of Chemistry.…”
Section: Stability Of Liponmentioning
confidence: 99%
“…While one of LiPONs strengths as an electrolyte appears to be its resistance to lithium penetration (Westover et al, 2019), there are a number of interfacial reactions which yield gaseous evolution (Put et al, 2018) and resistive interfacial layers 2018with permission from the Royal Society of Chemistry. (Li et al, 2014;Hausbrand et al, 2015;Weiss et al, 2019) at both the anode and cathode interfaces which may limit the future application of LiPON SSEs.…”
Section: Stability Of Liponmentioning
confidence: 99%