Synthesis and purification of SiS2 and Li2S for Li9.54Si1.74P1.44S11.7Cl0.3 solid electrolyte in Lithium-ion batteries

Zhang, Yong; Xie, Meng-Xiang; Zong-hua, WU; Yan, Jiali; Shao, Gangqin

doi:10.1016/j.matlet.2020.127508

Cited by 17 publications

(22 citation statements)

References 27 publications

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“…The LNO-coated NMC@LCO cathode presented a reversible capacity of 197 mAh g −1 and high cycle performance with a capacity retention of 82.3% after 500 cycles at 35 • C and a current rate of 0.3C(Figure 21a-h). Recently, Zhang et al[300] prepared the above electrolyte via elemental synthesis gasifying separation route and carbothermal reduction ethanol-dissolution technique to synthesize pure SiS 2 and Li 2 S raw materials and they obtain a conductivity of 1.5 mS cm −1 .…”

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confidence: 99%

Sulfide and Oxide Inorganic Solid Electrolytes for All-Solid-State Li Batteries: A Review

et al. 2020

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Energy storage materials are finding increasing applications in our daily lives, for devices such as mobile phones and electric vehicles. Current commercial batteries use flammable liquid electrolytes, which are unsafe, toxic, and environmentally unfriendly with low chemical stability. Recently, solid electrolytes have been extensively studied as alternative electrolytes to address these shortcomings. Herein, we report the early history, synthesis and characterization, mechanical properties, and Li+ ion transport mechanisms of inorganic sulfide and oxide electrolytes. Furthermore, we highlight the importance of the fabrication technology and experimental conditions, such as the effects of pressure and operating parameters, on the electrochemical performance of all-solid-state Li batteries. In particular, we emphasize promising electrolyte systems based on sulfides and argyrodites, such as LiPS5Cl and β-Li3PS4, oxide electrolytes, bare and doped Li7La3Zr2O12 garnet, NASICON-type structures, and perovskite electrolyte materials. Moreover, we discuss the present and future challenges that all-solid-state batteries face for large-scale industrial applications.

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confidence: 99%

Sulfide and Oxide Inorganic Solid Electrolytes for All-Solid-State Li Batteries: A Review

et al. 2020

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“…Second, the synthesis of LSiPSCl requires strict composition control and synthetic conditions, because the preparation of a pure phase is particularly challenging. Indeed, significant quantities of secondary phases, such as Li 7 PS 6 , were observed in previous studies, − indicating the limited solid-solution region of LSiPSCl. The presence of such impurities may result in a lower conductivity, and so the preparation of high-purity samples is necessary to accurately evaluate their electrochemical properties, including the lithium conductivity of the LSiPSCl phase.…”

Section: Introductionmentioning

confidence: 87%

Oxygen Substitution for Li–Si–P–S–Cl Solid Electrolytes toward Purified Li₁₀GeP₂S₁₂-Type Phase with Enhanced Electrochemical Stabilities for All-Solid-State Batteries

Daikuhara

Hori

et al. 2020

Chem. Mater.

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LSiPSCl), which exhibits a Li 10 GeP 2 S 12 (LGPS)-type structure, presents the highest reported Li-ion conductivity for solid electrolytes, but the formation of a secondary phase and a limited electrochemical stability restricts its performance in all-solid-state cells. Herein, oxygen atoms were substituted into LSiPSCl, and a monophasic LGPS-type solid solution was obtained (Li 9.54 Si 1.74 P 1.44 S 11.7−z Cl 0.3 O z , LSiPSClO z ; 0 < z ≤ 0.6). Compared with LSiPSCl, the oxygen-substituted sample showed an improved ionic conductivity (7.4 ± 0.2 mS cm −1 ) for its cold-pressed powder pellet containing both bulk and grain-boundary resistances. This trend is consistent with the bulk conductivities at 298 K (28 ± 3 mS cm −1 ) estimated from impedance measurements at low temperatures. The electrochemical stabilization effect of oxygen substitution was confirmed by the charge−discharge measurement for an all-solid-state cell using the oxygen-substituted material as a separator electrolyte, which exhibited improved cycling compared to the cell using the nonsubstituted phase. Oxygen substitution in the LGPS-type phase of the Li−Si−P−S−Cl system therefore provides a higher purity and enhances the electrochemical stability of all-solid-state batteries, suggesting that oxygen substitution could lead to stable LGPS-type superionic conductors in the halogen-substituted Li− M−P−S (M = Ge, Si, and Sn) system.

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“…Silicon disulfide (SiS 2 ) is an important synthetic compound used in fundamental and applied research. It is one of the important raw materials for sulfide-based solid electrolytes. − There are five polymorphs of SiS 2 . One is the ambient-pressure (NP) phase (≤3.83 MPa, 973–1570 K) ,,− with an orthorhombic structure ( Ibam , Space Group no.…”

Section: Introductionmentioning

confidence: 99%

“…The SiS 2 has an extreme-high selling price due to its complex synthesis methods restrained by its sensitivity toward hydrolysis and oxidation to generate the toxic H 2 S with a penetrating odor. , …”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Growth Mechanism of SiS₂ Rods

Xie

Zhang

et al. 2022

ACS Omega

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The SiS 2 rods exhibit a significant anisotropy property applied in a special field such as in the one of all-solid-state lithium-ion batteries and so on. In this work, the orthorhombic SiS 2 rods with high chemical/phase purity were prepared by an elemental method, either through a boiling or a steaming process, at 1023–1073 K for 3 h and under the saturated S-vapor pressure (2.57–3.83 MPa) in a closed sealed-tube system. The composition, crystal structure, morphology, and growth mechanism were investigated. Results showed that the growth orientation of SiS 2 along the <0 0 1> is intrinsically governed by the crystal structure motif. It could exist in both processes and the latter tends to show in macroscopic morphology. Using the pressure-temperature diagram, structure refinement, pole figures, image analyses, and so forth, factors influencing the purity and growth of SiS 2 rods were concluded from the thermodynamics and kinetics viewpoints.

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Synthesis and purification of SiS2 and Li2S for Li9.54Si1.74P1.44S11.7Cl0.3 solid electrolyte in Lithium-ion batteries

Cited by 17 publications

References 27 publications

Sulfide and Oxide Inorganic Solid Electrolytes for All-Solid-State Li Batteries: A Review

Sulfide and Oxide Inorganic Solid Electrolytes for All-Solid-State Li Batteries: A Review

Oxygen Substitution for Li–Si–P–S–Cl Solid Electrolytes toward Purified Li₁₀GeP₂S₁₂-Type Phase with Enhanced Electrochemical Stabilities for All-Solid-State Batteries

Synthesis and Growth Mechanism of SiS₂ Rods

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Synthesis and purification of SiS2 and Li2S for Li9.54Si1.74P1.44S11.7Cl0.3 solid electrolyte in Lithium-ion batteries

Cited by 17 publications

References 27 publications

Sulfide and Oxide Inorganic Solid Electrolytes for All-Solid-State Li Batteries: A Review

Sulfide and Oxide Inorganic Solid Electrolytes for All-Solid-State Li Batteries: A Review

Oxygen Substitution for Li–Si–P–S–Cl Solid Electrolytes toward Purified Li10GeP2S12-Type Phase with Enhanced Electrochemical Stabilities for All-Solid-State Batteries

Synthesis and Growth Mechanism of SiS2 Rods

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Oxygen Substitution for Li–Si–P–S–Cl Solid Electrolytes toward Purified Li₁₀GeP₂S₁₂-Type Phase with Enhanced Electrochemical Stabilities for All-Solid-State Batteries

Synthesis and Growth Mechanism of SiS₂ Rods