Li10Si0.3Sn0.7P2S12 – A low-cost and low-grain-boundary-resistance lithium superionic conductor

Bron, Philipp; Dehnen, Stefanie; Roling, Bernhard

doi:10.1016/j.jpowsour.2016.08.115

Cited by 131 publications

(163 citation statements)

References 22 publications

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“…Fortunately, this is still comparable to liquid electrolytes . By replacing 30% Sn with Si and forming Li 10 Sn 0.7 Si 0.3 P 2 S 12 , Bron et al greatly reduced grain boundary resistance and improved the ionic conductivity to 8 × 10 −3 S cm −1 at room temperature . Another cost‐effective option is Li 10 SiP 2 S 12 (LSiPS), which also crystallizes in LGPS structure with smaller lattice parameter than LGPS ( a = 8.65 Å and c = 12.51 Å for LSiPS and a = 8.71 Å and c = 12.63 Å for LGPS).…”

Section: Sulfide‐based Solid‐state Electrolytesmentioning

confidence: 99%

Sulfide‐Based Solid‐State Electrolytes: Synthesis, Stability, and Potential for All‐Solid‐State Batteries

et al. 2019

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Due to their high ionic conductivity and adeciduate mechanical features for lamination, sulfide composites have received increasing attention as solid electrolyte in all-solid-state batteries. Their smaller electronegativity and binding energy to Li ions and bigger atomic radius provide high ionic conductivity and make them attractive for practical applications. In recent years, noticeable efforts have been made to develop high-performance sulfide solid-state electrolytes. However, sulfide solid-state electrolytes still face numerous challenges including: 1) the need for a higher stability voltage window, 2) a better electrode-electrolyte interface and air stability, and 3) a cost-effective approach for large-scale manufacturing. Herein, a comprehensive update on the properties (structural and chemical), synthesis of sulfide solid-state electrolytes, and the development of sulfide-based all-solid-state batteries is provided, including electrochemical and chemical stability, interface stabilization, and their applications in high performance and safe energy storage.

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Section: Sulfide‐based Solid‐state Electrolytesmentioning

confidence: 99%

Sulfide‐Based Solid‐State Electrolytes: Synthesis, Stability, and Potential for All‐Solid‐State Batteries

et al. 2019

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“…[ 12 ] Based on this method, which is one of the standard protocols for laboratory‐level research, numerous synthesis methods have been developed, as listed in Table 1 . [ 12,13,28–47 ] A subsequent study reported that synthesis temperatures more than 400 °C are required for the crystallization of the LGPS phase from precursors obtained by mechanochemical treatment. [ 48 ] In‐depth temperature‐composition studies have been performed to obtain high‐purity LGPS phases and comprehend the Li 4 GeS 4 –Li 3 PS 4 pseudo‐binary system.…”

Section: Synthesismentioning

confidence: 99%

Li₁₀GeP₂S₁₂‐Type Superionic Conductors: Synthesis, Structure, and Ionic Transportation

Kato

Hori

Kanno

2020

Advanced Energy Materials

137

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Ever since the first report on Li10GeP2S12 (LGPS) in 2011, its unique structure and exceptionally high lithium conductivity (>1 × 10−2 S cm−1) have attracted extensive interest, especially for applications in solid‐state ionics and batteries. Herein, studies of LGPS and its modifications are reviewed with a focus on the synthesis, structure, and ionic transportation of LGPS. For material synthesis, the relationships between LGPS and its precursor compounds such as Li3PS4 and Li4GeS4 are discussed. A technique for single‐crystal growth and a family of LGPS‐type materials that are chemically or structurally related to LGPS are then described. The crystal structure of LGPS is analyzed from the viewpoints of tetrahedral framework units, anion sublattice, and Li distributions; furthermore, the conduction mechanism is qualitatively analyzed. Subsequently, ionic transportation in LGPS is studied quantitatively. The origin of the high conductivity is discussed in terms of the activation energy, diffusion coefficient, and its related parameters; and these factors are compared to those of other non‐LGPS‐type conductors. Then, the battery applications are briefly summarized to indicate the potential merits of using LGPS‐type solid electrolytes with high lithium conductivity. Any remaining issues and possible research directions that have emerged from the aforementioned studies are finally highlighted.

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“…(i) and (ii) listed above) are very small in the here measured temperature range, their contributions are expected to appear beyond the maximum applied frequency of 1 MHz. 42 Hence, they cannot be resolved and are included in the serial resistor (s. left-most resistor in the inset of Figure 1), along with electrical resistances of the cables and the cell body. Transport through the PEO 15 LiTFSI films and across the PEO 15 LiTFSI | Li and the PEO 15 LiTFSI | LSPS interfaces (contributions (iii) -(v)) appear as semicircles in the Nyquist plot and are thus modeled by a parallel circuit of a resistor and a capacitor.…”

Section: X-ray Photoelectron Spectroscopy (Xps)-samplesmentioning

confidence: 99%

“…Similar capacitances have been reported for RCPE elements describing Li-ion transport across the SE layer. 42,44 In order to evaluate the calendar aging of these cells, time-resolved EIS was performed at 40°C (after prior heating to 60°C). Impedance spectra recorded over the course of one week are shown in Figure 3, demonstrating a steady rise in cell impedance with time.…”

Section: X-ray Photoelectron Spectroscopy (Xps)-samplesmentioning

confidence: 99%

Editors' Choice—Understanding Chemical Stability Issues between Different Solid Electrolytes in All-Solid-State Batteries

Riphaus

Stiaszny

Beyer

et al. 2019

J. Electrochem. Soc.

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Sulfide-based solid electrolytes (SE) are quite attractive for application in all-solid-state batteries (ASSB) due to their high ionic conductivities and low grain boundary resistance. However, limited chemical and electrochemical stability demands for protection on both cathode and anode side. One promising concept to prevent unwanted reactions and simultaneously improve interfacial contacting at the anode side consists in applying a thin polymer film as interlayer between Li metal and the SE. In the present study, we investigated the combination of polyethylene oxide (PEO) based polymer films with the sulfide-based SE Li 10 SnP 2 S 12 (LSPS). We analyzed their compatibility using both electrochemical and chemical techniques. A steady increase in the cell resistance during calendar aging indicated decomposition reactions at the interfaces. By means of X-ray photoelectron spectroscopy and further analytical methods, the formation of polysulfides, P-[S] n-P like bridged PS 4 3− units and sulfite, SO 3 2− , was demonstrated. We critically discuss potential reasons and propose a plausible mechanism for the degradation of LSPS with PEO. The main objective of this paper is to highlight the importance of understanding interfaces in ASSBs not only from an electrochemical perspective, but also from a chemical point of view.

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Li10Si0.3Sn0.7P2S12 – A low-cost and low-grain-boundary-resistance lithium superionic conductor

Cited by 131 publications

References 22 publications

Sulfide‐Based Solid‐State Electrolytes: Synthesis, Stability, and Potential for All‐Solid‐State Batteries

Sulfide‐Based Solid‐State Electrolytes: Synthesis, Stability, and Potential for All‐Solid‐State Batteries

Li₁₀GeP₂S₁₂‐Type Superionic Conductors: Synthesis, Structure, and Ionic Transportation

Editors' Choice—Understanding Chemical Stability Issues between Different Solid Electrolytes in All-Solid-State Batteries

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Li10Si0.3Sn0.7P2S12 – A low-cost and low-grain-boundary-resistance lithium superionic conductor

Cited by 131 publications

References 22 publications

Sulfide‐Based Solid‐State Electrolytes: Synthesis, Stability, and Potential for All‐Solid‐State Batteries

Sulfide‐Based Solid‐State Electrolytes: Synthesis, Stability, and Potential for All‐Solid‐State Batteries

Li10GeP2S12‐Type Superionic Conductors: Synthesis, Structure, and Ionic Transportation

Editors' Choice—Understanding Chemical Stability Issues between Different Solid Electrolytes in All-Solid-State Batteries

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Product

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Li₁₀GeP₂S₁₂‐Type Superionic Conductors: Synthesis, Structure, and Ionic Transportation