2019
DOI: 10.1149/2.0311916jes
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Lithium Dendrite Growth Suppression and Ionic Conductivity of Li2S-P2S5-P2O5 Glass Solid Electrolytes Prepared by Mechanical Milling

Abstract: In this study, the ionic conductivity of 77.5Li 2 S•22.5P 2 S 5 and 77.5Li 2 S•(22.5-x)P 2 S 5 •xP 2 O 5 glassy solid-state electrolytes (SSEs) and the relationship of conductivity and lithium deposition behavior in a symmetric lithium metal cell in terms of P 2 O 5 concentration have been investigated. The mechanical milling method has been used to prepare the glassy electrolytes. By adding only a small amount (0.25 mol %) of P 2 O 5 , both the ionic conductivity and the longest cycling performance improve wi… Show more

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Cited by 21 publications
(17 citation statements)
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“…The last is followed by a cooling step, either slow cooling (to ensure crystallization) or quenching step in ice water (to obtain amorphous material). [157,163] In the mechanochemical method, glass, glass-ceramic, and ceramic sulfides are typically synthesized under nonequilibrium conditions using a high-energy planetary ball mill apparatus at room temperature, [150,156,223] which obviates the need for high temperatures and cooling steps. Explicit guidelines and ball-milling parameters (material and geometry of the ball milling jar and balls, rotation speed, milling cycling program, the respective volumetric/ weight ration of the milling jar, balls, and the powders) [224] can be widely found in the literature.…”
Section: Sulfidesmentioning
confidence: 99%
“…The last is followed by a cooling step, either slow cooling (to ensure crystallization) or quenching step in ice water (to obtain amorphous material). [157,163] In the mechanochemical method, glass, glass-ceramic, and ceramic sulfides are typically synthesized under nonequilibrium conditions using a high-energy planetary ball mill apparatus at room temperature, [150,156,223] which obviates the need for high temperatures and cooling steps. Explicit guidelines and ball-milling parameters (material and geometry of the ball milling jar and balls, rotation speed, milling cycling program, the respective volumetric/ weight ration of the milling jar, balls, and the powders) [224] can be widely found in the literature.…”
Section: Sulfidesmentioning
confidence: 99%
“…Inspired by the fabrication of amorphous solid conductor for LIBs, such as Li 3 PO 4 , Su and Tsuruoka proposed a plasmaassisted atomic layer deposition method to fabricate amorphous oxygen-deficient Mg 2.4 P 2 O 5.4 thin film in 2019 (Cengiz et al, 2019;Su et al, 2019). It exhibited an ionic conductivity of 1.6 × 10 −7 S cm −1 at 500 • C. The hopping conduction of Mg ions in the disordered amorphous phosphate matrix was believed to result in the conductivity.…”
Section: Phosphates-based Mg Ion Solid Conductorsmentioning
confidence: 99%
“…The technical challenge of Li anode comes from the lithium dendrite formed on surface during cycling, which could penetrate the separator and result in the short-circuit of the battery and thus fire-catching or even explosion (Janek and Zeier, 2016;Chen et al, 2020). Despite the endeavors to suppress the dendrite formation, the progress is limited and none of the solutions meets the commercial standards (Cengiz et al, 2019;Michel et al, 2019). Therefore, next generation advanced rechargeable batteries, such as multivalent metal (Mg, Ca, Al etc.…”
Section: Introductionmentioning
confidence: 99%
“…All-solid-state batteries (ASSBs) have emerged as promising next-generation batteries because of their potential to provide high energy density and enhanced safety. Utilization of Li metal as the anode in ASSBs is the ideal choice. However, challenges remain with regard to the stability of the Li metal anode, such as dendrite formation and large volume changes during cycling, which result in mechanical degradation at the interface between the anode and solid-state electrolyte (SSE). This degradation not only contributes to a significant reduction of cell life but also leads to potential cell internal short circuits. Strategies have been developed to analyze and resolve the interface issues caused by Li metal anode, such as adding a self-healing component into the SSE, softening the SSE with polymers, engineering of interlayers, and rational control of Li metal deposition based on theoretical studies. ,,, …”
mentioning
confidence: 99%
“…Graphite, which is cheap and abundant, has demonstrated long cyclability with little volume change in all-solid-state Li-ion batteries. ,, After lithiation, the product LiC 6 is thermodynamically stable with Li metal and has both electronic and ionic conductivity. Moreover, LiC 6 is shown to be lithiophilic and can facilitate Li metal deposition. ,, These properties suggest graphite can fit the aforementioned design requirements as a material for 3D anode networks in ASSBs.…”
mentioning
confidence: 99%