Liquid-phase syntheses of sulfide electrolytes for all-solid-state lithium battery

Miura, Akira; Rosero-Navarro, Nataly Carolina; Sakuda, Atsushi; Tadanaga, Kiyoharu; Phuc, Nguyen Huu Huy; Matsuda, Atsunori; Machida, Nobuya; Hayashi, Akitoshi; Tatsumisago, Masahiro

doi:10.1038/s41570-019-0078-2

Cited by 247 publications

(206 citation statements)

References 79 publications

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“…Li + ion diffusion occurs via these partially occupied positions, which form hexagonal cages connected to each other via the interstitial sites around the X − and S 2− ions for Li 6 PS 5 Cl and Li 6 PS 5 I, respectively. Rao and Adams [181] reported that the lattice parameters of the polycrystalline (iii) Argyrodite electrolytes can be synthesized using different methods [169,, such as the conventional sealed tube solid-state reaction [169], ball milling [181,183,187], and solution-based methods [189,208].…”

Section: Argyrodite Electrolytesmentioning

confidence: 99%

“…According to Camacho-Forero and Balbuena [184], the ionic conductivity of Li 6 PS 5 I was significantly lower than those of Li 6 PS 5 Cl and Li 6 PS 5 Br. (iii) Argyrodite electrolytes can be synthesized using different methods [169,, such as the conventional sealed tube solid-state reaction [169], ball milling [181,183,187], and solution-based methods [189,208].…”

Section: Argyrodite Electrolytesmentioning

confidence: 99%

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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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Section: Argyrodite Electrolytesmentioning

confidence: 99%

Section: Argyrodite Electrolytesmentioning

confidence: 99%

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

et al. 2020

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“…In the literature, the ionic conductivity of Li7P3S11 prepared in ACN is always higher than in DME. 12 It can explain as follow: For liquid-phase synthesis in ACN, Therefore, the precursor is actually in the precipitate-excess region, resulting in a large amount of thio-LISICON III phase in the SEs. When using DME as the solvent, the amorphous "Li2S•P2S5" phase and the solvated Li3PS4 coprecipitate so the loss of supernatant has little effect on the SEs.…”

Section: How About Other Solvents?mentioning

confidence: 99%

“…The most successful attempts of the liquid-phase synthesis of sulfide SEs are demonstrated for lithium thio-phosphate, such as β-Li3PS4 and Li7P3S11 and its halosulfide derives such as Li7P2S8I. [12][13][14][15] As a widely studied example, the synthesis of Li7P3S11 in acetonitrile (ACN) has been used to fabricate a nanoscale-mixed cathode composite of cobalt sulfide and Li7P3S11, A c c e p t e d m a n u s c r i p t endowing the prototypical batteries with intimate contact of anode-electrolyte-cathode and 1000 cycles at room temperature. 16 Despites the success on reducing particle size of sulfide SEs by liquid-phase synthesis, the ionic conductivity of the liquid-phase synthesized SEs is usually several times lower than those synthesized by solid-phase routes, 12 which is intuitively ascribed to the residual solvents and impurities.…”

Section: Introductionmentioning

confidence: 99%

Influence of precipitate/supernatant ratio during liquid-phase synthesis of solid electrolyte Li7P3S11

et al. 2019

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Delicate control of the precipitate/supernatant ratio in the precursor suspension during liquid-phase synthesis of Li7P3S11 provides information on how the morphology of the impurities affect the ionic conductivity. In this work, the influence of the precipitate/supernatant ratio on the phase structure, the morphology and the ionic conductivity of Li7P3S11 prepared in acetonitrile is studied. It is revealed that in the supernatant-excess region, the excess amorphous "Li2S•P2S5" finally turns into a poorly ionic conductive phase Li4P2S6 which wraps Li7P3S11 particles, increasing the interfacial resistance. In the precipitate-excess region, a thio-LISICON III phase turned from the excess precipitate tends to stay within Li7P3S11 particles, and therefore its negative influence on the total ionic conductivity is not evident. Consequently, a slight composition shift into the precipitate-excess region benefits the ionic conductivity of the resultant solid electrolyte.

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“…For example, the mixing processes are closely related to the distribution of each electrode component, and the cell specifications, such as the compositions of the solid electrolyte and active material and the thickness of the composite electrodes, can significantly affect the cell performance. To address these issues, various approaches have been suggested, for example, direct coating of solid electrolytes on active materials and infiltration of solid electrolytes within prefabricated electrodes .…”

Section: Introductionmentioning

confidence: 99%

Efficient cell design and fabrication of concentration‐gradient composite electrodes for high‐power and high‐energy‐density all‐solid‐state batteries

et al. 2019

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All‐solid‐state batteries are promising energy storage devices in which high‐energy‐density and superior safety can be obtained by efficient cell design and the use of nonflammable solid electrolytes, respectively. This paper presents a systematic study of experimental factors that affect the electrochemical performance of all‐solid‐state batteries. The morphological changes in composite electrodes fabricated using different mixing speeds are carefully observed, and the corresponding electrochemical performances are evaluated in symmetric cell and half‐cell configurations. We also investigate the effect of the composite electrode thickness at different charge/discharge rates for the realization of all‐solid‐state batteries with high‐energy‐density. The results of this investigation confirm a consistent relationship between the cell capacity and the ionic resistance within the composite electrodes. Finally, a concentration‐gradient composite electrode design is presented for enhanced power density in thick composite electrodes; it provides a promising route to improving the cell performance simply by composite electrode design.

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Liquid-phase syntheses of sulfide electrolytes for all-solid-state lithium battery

Cited by 247 publications

References 79 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

Influence of precipitate/supernatant ratio during liquid-phase synthesis of solid electrolyte Li7P3S11

Efficient cell design and fabrication of concentration‐gradient composite electrodes for high‐power and high‐energy‐density all‐solid‐state batteries

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