2020
DOI: 10.1021/jacs.0c10121
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Micromechanism in All-Solid-State Alloy-Metal Batteries: Regulating Homogeneous Lithium Precipitation and Flexible Solid Electrolyte Interphase Evolution

Abstract: Sulfide-based solid-state electrolytes (SSEs) matched with alloy anodes are considered as promising candidates for application in all-solid-state batteries (ASSBs) to overcome the bottlenecks of the lithium (Li) anode. However, an understanding of the dynamic electrochemical processes on alloy anode in SSE is still elusive. Herein, in situ atomic force microscopy gives insights into the block-formation and stack-accumulation behaviors of Li precipitation on an Li electrode, uncovering the morphological evoluti… Show more

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Cited by 85 publications
(59 citation statements)
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References 48 publications
(59 reference statements)
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“…4c, after 30 cycles, the R SUM of the Li|LGPS|Li cell (70 kO) is greatly increased compared with that before cycle (Table S2, ESI †), indicating that a large number of poor ionic conductors were continuously produced on the Li-LGPS interface. 28,45,46 Conversely, the R SUM of the modified Li|GPI-LGPS-GPI|Li cell remains unchanged after cycling (Table S2, ESI †), again demonstrating that the GPI as the interlayer between the Li metal and LGPS can block significant interfacial reactions between the Li metal and LGPS, thus promising a higher electrochemical stability (Fig. 4d).…”
Section: Resultsmentioning
confidence: 91%
“…4c, after 30 cycles, the R SUM of the Li|LGPS|Li cell (70 kO) is greatly increased compared with that before cycle (Table S2, ESI †), indicating that a large number of poor ionic conductors were continuously produced on the Li-LGPS interface. 28,45,46 Conversely, the R SUM of the modified Li|GPI-LGPS-GPI|Li cell remains unchanged after cycling (Table S2, ESI †), again demonstrating that the GPI as the interlayer between the Li metal and LGPS can block significant interfacial reactions between the Li metal and LGPS, thus promising a higher electrochemical stability (Fig. 4d).…”
Section: Resultsmentioning
confidence: 91%
“…Copyright 2020, American Chemical Society. b) Schematic diagrams of the dynamic evolution and interfacial mechanism of Li and Li x In [68] . Copyright 2021, American Chemical Society.…”
Section: Electrode Interface Instabilitymentioning
confidence: 99%
“…Dynamic visualization of the Li deposition/dissolution was achieved by in situ EC‐AFM, via monitoring of the lateral interface between Li–In alloy anode and Li 10 GeP 2 S 12 (LGPS) SSE. [ 290 ] The Li‐In alloy anode with a high ionic diffusion coefficient and low ionic migration barrier induces the homogeneous formation of an SEI and 2D uniform growth of Li x In lamellae upon lithiation. The on‐site tracking of the morphological evolution and dynamic mechanism in these studies provides an in‐depth understanding of the electrode/SSE interfaces.…”
Section: Ec‐afm For the Understanding Of Libs And Their Materialsmentioning
confidence: 99%