Evaluation of young’s modulus of Li&lt;sub&gt;2&lt;/sub&gt;S–P&lt;sub&gt;2&lt;/sub&gt;S&lt;sub&gt;5&lt;/sub&gt;–P&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt; oxysulfide glass solid electrolytes

Kato, Akira; Nagao, Motohiro; Sakuda, Atsushi; Hayashi, Akitoshi; Tatsumisago, Masahiro

doi:10.2109/jcersj2.122.552

Cited by 45 publications

(31 citation statements)

References 24 publications

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“…Higher elastic modulus is also found in O-doped sulfides. For example, the Young's modulus increases with P 2 O 5 doping concentration in 70Li 2 S•(30-z)P 2 S 5 •zP 2 O 5 system [40]. Hence, the shear modulus of LP-SOB-0.3 would be higher than that of LPSB, which is beneficial to suppress the growth of Li dendrite.…”

Section: Electrochemical Performance Of LI 6 Ps 5-x O X Brmentioning

confidence: 99%

“…2g. Previous studies reveal that Li dendrite suppression capability is relevant to the shear modulus of the electrolyte [40,51]. Oxides normally show higher elastic modulus (both Young's modulus and shear modulus) than sulfides [39,52].…”

Section: Electrochemical Performance Of LI 6 Ps 5-x O X Brmentioning

confidence: 99%

“…Nevertheless, it is still not clear whether O doping can simultaneously improve the interfacial stability on both oxide and Li electrodes. Moreover, O doping improves the elastic modulus [39,40] and O-contained reduced interphases may be favorable to form a self-limiting interface with a broad electrochemical window [8,19,37,41]. Another benefit of O substitution for S atoms is to reduce the moisture sensitivity of sulfides [42].…”

Section: Introductionmentioning

confidence: 99%

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All-in-one improvement toward Li6PS5Br-Based solid electrolytes triggered by compositional tune

Zhang

Yan

et al. 2019

Journal of Power Sources

150

118

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Sulfide solid electrolytes possess high ionic conductivity and moderate dendrite suppression capability, but rather poor compatibility against oxide cathodes and metallic Li. Here, we report O-doped Li 6 PS 5 Br as solid electrolyte synthesized by a facile solid-state sintering. Different from other O-incorporated sulfides, the O atoms in Li 6 PS 5-x O x Br prefer to substitute the S atoms at free S 2− sites rather than those at the PS 4 tetrahedra. Remarkably, without deteriorating the ionic conductivity, this inorganic solid electrolyte with O doping exhibits comprehensively enhanced properties including excellent dendrite suppression capability, superior electrochemical and chemical stability against Li metal as well as high voltage oxide cathodes, and good air stability. Li(Ni 0.8 Co 0.1 Mn 0.1)O 2 and LiCoO 2-based all-solid-state batteries with Li 6 PS 4.7 O 0.3 Br electrolyte deliver high specific capacity, superior rate capability, and outstanding cycling stability accompanied with low interfacial resistivity. This type of inorganic solid electrolytes is promising for all-solid-state batteries with high energy density.

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Section: Electrochemical Performance Of LI 6 Ps 5-x O X Brmentioning

confidence: 99%

Section: Electrochemical Performance Of LI 6 Ps 5-x O X Brmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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All-in-one improvement toward Li6PS5Br-Based solid electrolytes triggered by compositional tune

Zhang

Yan

et al. 2019

Journal of Power Sources

150

118

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“…[ 297 ] In general, glass and glass–ceramic sulfides of the parent system LPS hot pressed with ≈99% relative density exhibit Young's, bulk, and shear moduli in the range of ≈13–28, ≈10–25, and ≈5–12 GPa, respectively with a Poisson ratio of ν = 0.26–0.32. [ 149,151,296,150 ] The large Pugh's ratio B / G in the range of ≈1.75–2.5 [ 149 ] indicates that sulfides are ductile materials, which can better accommodate elastic mismatch with adjacent electrodes. An exemplary glassy sulfide is 50Li 2 S–50P 2 S 5 (or 70:30 mol%) with a Pugh's ratio of 1.8, Young's modulus of ≈18 GPa, [ 150,259 ] bulk modulus of 12.5 GPa, and shear modulus of ≈7 GPa, [ 149,259 ] which is barely compliant with the Monroe–Newman criterion for dendrite propagation.…”

Section: Solid Electrolytes: Sulfides and Oxidesmentioning

confidence: 99%

Solid‐State Li–Metal Batteries: Challenges and Horizons of Oxide and Sulfide Solid Electrolytes and Their Interfaces

Kim

Balaish

Wadaguchi

et al. 2020

Advanced Energy Materials

406

355

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lightweight, and compact and allow for versatile device geometries. They must also be scalable and offer high energy density to provide improved packing efficiency and longer device operation. Although both Ni-MH batteries and LIBs have been commercialized since the 1990s, [1] LIBs possess twice the gravimetric/volumetric energy density (250 Wh kg −1 /700 Wh L −1 vs 170 Wh kg −1 /350 Wh L −1 ), [2] higher battery voltage (3.7 V vs 1.2 V), and longer cycle life with lower self-discharge, [3] contributing tremendously to the proliferation of portable electronic devices (e.g., mobile phones, laptops, cameras, tablets) as well as emerging new technologies such as wearable electronic devices (e.g., smart watches and sport-related tracking devices). Their high gravimetric/ volumetric energy density, [2] excellent cycle life (thousands of cycles), and lack of the memory effect have positioned LIBs as state-of-the-art power sources and one of the greatest successes of modern electrochemistry, revolutionizing the way we acquire, process, transmit, and share information globally. Nevertheless, advances in battery energy density, safety, costs, and flexibility in shape and size are still needed to keep up with the rapidly growing demand for devices with even longer runtime as well as real-time data collection and transmission capabilities in addition to increasingly energy-demanding applications such as electric vehicles (EVs) and electricity grid storage. Even though LIBs were first commercialized in all electric vehicles (EVs) in 2010 and also emerged for grid application in the same time frame, the low energy density (≈250 Wh kg −1 ) and high average cost (≈$156 kWh −1 in 2019) of conventional LIBs do not meet the requirements for advanced EVs and grid-scale energy storage. [4][5][6] Specifically, the driving range per charge (miles), which is related to the energy density of each cell, and the cost are important parameters for EVs. For example, one 85 kWh battery pack in a Tesla Model S requires 7104 LIB cells, with an energy density of 265 Wh kg −1 , providing an average range of 250 miles, which is ahead of the range of other EVs but still behind the target of 375 miles. [4] In grid-scale applications, LIBs can be used for various tasks: frequency regulation, peak shaving, load leveling, and large-scale integration of renewable energies, with specific properties generally required for each task. For frequency regulation, LIBs need to provide a fast response, high rate performance, and high-power capability,The introduction of new, safe, and reliable solid-electrolyte chemistries and technologies can potentially overcome the challenges facing their liquid counterparts while widening the breadth of possible applications. Through tech-historic evolution and rationally analyzing the transition from liquidbased Li-ion batteries (LIBs) to all-solid-state Li-metal batteries (ASSLBs), a roadmap for the development of a successful oxide and sulfide-based ASSLB focusing on interfacial challenges is introduced, while accounting ...

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“…Plastic flow at room temperature is an effective property for reducing the interface resistance of all-solid-state batteries. 24 On the other hand, the solid electrolyte and active material are in close proximity under pressure; therefore, the interface resistance increases when the pressure is removed. In addition, the generation of hydrogen sulfide by hydrolysis remains a concern.…”

Section: Introductionmentioning

confidence: 99%

Pressureless all‐solid‐state sodium‐ion battery consisting of sodium iron pyrophosphate glass‐ceramic cathode and β″‐alumina solid electrolyte composite

et al. 2019

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In recent years, the expansion of demand for lithium ion batteries has resulted in soaring prices of the constituent resources. From the viewpoint of safety, studies on all‐solid‐state batteries are actively being carried out. In this study, we succeeded in driving all‐solid‐state batteries derived from nontoxic oxide glasses at room temperature without requiring scarce resources such as lithium and cobalt. The main structure of the ceramic batteries with a simple structure in which Na2FeP2O7 crystallized glass and β″‐alumina solid solution are joined by pressureless cofiring at 550°C. During the crystallization of Na2O‐Fe2O3‐P2O5 glass, fusion with the β″‐alumina solid solution is achieved. Reversible charge and discharge of 80 mAh/g were achieved at room temperature. It is not necessary to apply pressure during cell preparation or the use of the batteries. Furthermore, the strong junction at the cathode and electrolyte interface does not peel off during charge and discharge over a long period of 623 cycles. Ex situ X‐ray photoelectron spectroscopy revealed partial Fe4+ induction and a reversible charge and discharge reaction even after overcharging to 9 V. It was demonstrated that Na2FeP2O7 is very stable against overcharging to 9 V.

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Evaluation of young’s modulus of Li<sub>2</sub>S–P<sub>2</sub>S<sub>5</sub>–P<sub>2</sub>O<sub>5</sub> oxysulfide glass solid electrolytes

Cited by 45 publications

References 24 publications

All-in-one improvement toward Li6PS5Br-Based solid electrolytes triggered by compositional tune

All-in-one improvement toward Li6PS5Br-Based solid electrolytes triggered by compositional tune

Solid‐State Li–Metal Batteries: Challenges and Horizons of Oxide and Sulfide Solid Electrolytes and Their Interfaces

Pressureless all‐solid‐state sodium‐ion battery consisting of sodium iron pyrophosphate glass‐ceramic cathode and β″‐alumina solid electrolyte composite

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