Designing solution chemistries for the low-temperature synthesis of sulfide-based solid electrolytes

Lim, Hee‐Dae; Yue, Xiujun; Xing, Xing; Petrova, Victoria; Gonzalez, Matthew; Liu, Haodong; Liu, Ping

doi:10.1039/c8ta01800f

Cited by 59 publications

(61 citation statements)

References 25 publications

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“…More recently, elaborate liquid‐phase syntheses of sulfide SEs have been reported. High‐purity β‐Li 3 PS 4 (0.13 mS cm −1 ) was prepared by adding LiSC 2 H 5 as a nucleophilic agent during the liquid‐phase synthesis because the THF‐soluble intermediate species of P 2 S 5 ‐LiSC 2 H 5 stimulates the reactivity . Adding excess sulfur for the liquid‐phase synthesis of Li 3 PS 4 allowed the conversion of the suspension into a homogeneous solution although the as‐obtained SE materials showed poor conductivities of <10 −5 S cm −1 .…”

Section: Figurementioning

confidence: 99%

Wet‐Chemical Tuning of Li_3−xPS₄ (0≤x≤0.3) Enabled by Dual Solvents for All‐Solid‐State Lithium‐Ion Batteries

Lee

et al. 2019

ChemSusChem

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All-solid-state lithium-ion batteries (ASLBs) employing sulfide solid electrolytes are attractive next-generationr echargeable batteries that could offer improved safety and energy density. Recently,w et syntheses or processes for sulfides olid electrolyte materials have opened opportunities to explore new materials and practical fabrication methodsf or ASLBs. An ew wetchemicalr oute fort he synthesis of Li-deficient Li 3Àx PS 4 (0 x 0.3) has been developed, which is enabled by dual solvents. Owing to its miscibility with tetrahydrofuran and ability to dissolve elemental sulfur, o-xylene as ac osolvent facilitatest he wet-chemical synthesis of Li 3Àx PS 4 .Li 3Àx PS 4 (0 x 0.15) derived by using dual solvents shows Li + conductivity of approximately 0.2 mS cm À1 at 30 8C, in contrastt o0 .034 mS cm À1 for a sample obtained by using ac onventional single solvent (tetrahydrofuran, x = 0.15). The evolution of the structure for Li 3Àx PS 4 is also investigatedb yc omplementary analysis using X-ray diffraction,R aman, and X-ray photoelectrons pectroscopy measurements. LiCoO 2 /Li-In ASLBs employing Li 2.85 PS 4 obtained by using dual solvents exhibit ar eversiblec apacity of 130 mA hg À1 with good cycle retention at 30 8C, outperforming cells with Li 2.85 PS 4 obtained by using ac onventional single solvent.[a] Dr.

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Section: Figurementioning

confidence: 99%

Wet‐Chemical Tuning of Li_3−xPS₄ (0≤x≤0.3) Enabled by Dual Solvents for All‐Solid‐State Lithium‐Ion Batteries

Lee

et al. 2019

ChemSusChem

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“… 17 , 34 − 42 Several studies reported that the Li 2 S–P 2 S 5 solid electrolyte was synthesized via stirring Li 2 S and P 2 S 5 in polar organic solvents. 17 , 34 , 38 − 41 In all cases, the ionic conductivity of Li 3 PS 4 prepared via liquid-phase synthesis was lower than that via solid-phase synthesis. 17 , 34 , 38 − 41 The relatively low ionic conductivity of Li 3 PS 4 in the liquid phase is hypothesized to be due to two factors: the residual unreacted Li 2 S and/or its relatively high crystallinity.…”

Section: Introductionmentioning

confidence: 96%

“… 17 , 34 , 38 − 41 In all cases, the ionic conductivity of Li 3 PS 4 prepared via liquid-phase synthesis was lower than that via solid-phase synthesis. 17 , 34 , 38 − 41 The relatively low ionic conductivity of Li 3 PS 4 in the liquid phase is hypothesized to be due to two factors: the residual unreacted Li 2 S and/or its relatively high crystallinity. 39 , 43 , 44 Shin et al reported that the reason for the low ionic conductivity was the unreacted starting material, Li 2 S. 39 However, the unreacted Li 2 S was not confirmed using X-ray diffraction (XRD) and/or Raman spectroscopy in other studies.…”

Section: Introductionmentioning

confidence: 96%

“… 39 , 43 , 44 Shin et al reported that the reason for the low ionic conductivity was the unreacted starting material, Li 2 S. 39 However, the unreacted Li 2 S was not confirmed using X-ray diffraction (XRD) and/or Raman spectroscopy in other studies. 17 , 34 − 38 , 40 − 42 Crystallinity is another factor for influencing the lithium ionic conductivity. Other researchers reported that the ionic conductivity decreased with increasing crystallinity.…”

Section: Introductionmentioning

confidence: 99%

“… 43 , 44 In the case of the liquid-phase synthesis, Li 3 PS 4 is highly crystallized during the annealing process for removing the solvent, resulting in the decrease of the ionic conductivity. 17 , 34 , 38 − 41…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Sulfide Solid Electrolytes through the Liquid Phase: Optimization of the Preparation Conditions

et al. 2020

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All-solid-state lithium batteries using inorganic sulfide solid electrolytes have good safety properties and high rate capabilities as expected for a next-generation battery. Presently, conventional preparation methods such as mechanical milling and/or solid-phase synthesis need a long time to provide a small amount of the product, and they have difficult in supplying a sufficient amount to meet the demand. Hence, liquid-phase synthesis methods have been developed for large-scale synthesis. However, the ionic conductivity of sulfide solid electrolytes prepared via liquid-phase synthesis is typically lower than that prepared via solid-phase synthesis. In this study, we have controlled three factors: (1) shaking time, (2) annealing temperature, and (3) annealing time. The factors influencing lithium ionic conductivity of Li 3 PS 4 prepared via liquid-phase synthesis were quantitatively evaluated using high-energy X-ray diffraction (XRD) measurement coupled with pair distribution function (PDF) analysis. It was revealed from PDF analysis that the amount of Li 2 S that cannot be detected by Raman spectroscopy or XRD decreased the ionic conductivity. Furthermore, it was revealed that the ionic conductivity of Li 3 PS 4 is dominated by other parameters, such as remaining solvent in the sample and high crystallinity of the sample.

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Challenges and Prospects of All‐Solid‐State Electrodes for Solid‐State Lithium Batteries

Dong

Sheng

Wang

et al. 2023

Adv Funct Materials

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In the development of all‐solid‐state lithium batteries (ASSLB), progress is made with solid‐state electrolytes; however, challenges regarding compatibility and stability still exist with solid electrodes. These issues result in a low battery capacity and short cycle life, which limit the commercial application of ASSLBs. This review summarizes the recent research progress on solid‐state electrodes in ASSLBs including the solid–solid interface phenomena such as the interface between electrode materials and electrolytes. The mechanical stability problems in solid electrodes, including fracture, brittleness, and deformation of electrode materials, are also discussed, and corresponding methods to measure the solid electrode stress are provided. In addition, strategies for mitigating stress‐related issues are examined. Finally, the fabrication process of solid electrodes is introduced and their future developments, including the exploration of new electrode materials and the design of more intelligent electrode structures, are proposed.

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Designing solution chemistries for the low-temperature synthesis of sulfide-based solid electrolytes

Abstract: A new solution-based synthesis method to produce a high quality Li2S–P2S5 solid electrolyte was developed by using a strong nucleophile of LiC2H5.

Cited by 59 publications

References 25 publications

Wet‐Chemical Tuning of Li_3−xPS₄ (0≤x≤0.3) Enabled by Dual Solvents for All‐Solid‐State Lithium‐Ion Batteries

Wet‐Chemical Tuning of Li_3−xPS₄ (0≤x≤0.3) Enabled by Dual Solvents for All‐Solid‐State Lithium‐Ion Batteries

Synthesis of Sulfide Solid Electrolytes through the Liquid Phase: Optimization of the Preparation Conditions

Challenges and Prospects of All‐Solid‐State Electrodes for Solid‐State Lithium Batteries

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Designing solution chemistries for the low-temperature synthesis of sulfide-based solid electrolytes

Abstract: A new solution-based synthesis method to produce a high quality Li2S–P2S5 solid electrolyte was developed by using a strong nucleophile of LiC2H5.

Cited by 59 publications

References 25 publications

Wet‐Chemical Tuning of Li3−xPS4 (0≤x≤0.3) Enabled by Dual Solvents for All‐Solid‐State Lithium‐Ion Batteries

Wet‐Chemical Tuning of Li3−xPS4 (0≤x≤0.3) Enabled by Dual Solvents for All‐Solid‐State Lithium‐Ion Batteries

Synthesis of Sulfide Solid Electrolytes through the Liquid Phase: Optimization of the Preparation Conditions

Challenges and Prospects of All‐Solid‐State Electrodes for Solid‐State Lithium Batteries

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Product

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About

Wet‐Chemical Tuning of Li_3−xPS₄ (0≤x≤0.3) Enabled by Dual Solvents for All‐Solid‐State Lithium‐Ion Batteries

Wet‐Chemical Tuning of Li_3−xPS₄ (0≤x≤0.3) Enabled by Dual Solvents for All‐Solid‐State Lithium‐Ion Batteries