Growth and ionic conductivity of Li3 + x P1 − x GexO4 (x = 0.34) single crystals

Ivanov-Shitz, A. K.; Kireev, V. V.

doi:10.1134/1.1541752

Cited by 10 publications

(25 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5) reveals basically two different cases: highly diffusive systems (t-LGPS, o-LGPS and t-LGPO), and a less diffusive one (o-LGPO). This latter finding is in qualitative agreement with results from impedance spectroscopy measurements for o-LGPO, reporting a rather high activation energy of ∼ 0.54 eV [120,123].…”

Section: B Tracer Diffusionsupporting

confidence: 91%

See 1 more Smart Citation

Electrolytes for Li-ion all-solid-state batteries: a first-principles comparative study of Li10GeP2O12 and Li10GeP2S12 in the LISICON and LGPS phases

Materzanini,

Kahle,

Marcolongo

et al. 2020

Preprint

View full text Add to dashboard Cite

In this work we address Li-ion diffusion in thio-LISICON materials and in their oxide counterparts, exploring both the orthorhombic and tetragonal phases of Li 10 GeP 2 S 12 (LGPS) and Li 10 GeP 2 O 12 (LGPO) through extended Car-Parrinello molecular dynamics in the canonical and isobaric-isothermal ensemble. The (quasi-)orthorhombic and tetragonal phases are studied both for the oxide and for the sulfide, with the aim of comparing their conductivity with the same approach; out of these four case studies, tetragonal LGPO has not been reported and, while dynamically stable, it sits (0.04 Ha/formula unit) above orthorhombic LGPO. We calculate activation energies for diffusion of 0.18 eV and 0.23 eV for tetragonal and orthorhombic LGPS, and of 0.22 eV and 0.34 eV for tetragonal and orthorhombic LGPO. In line with experiments, we find orthorhombic LGPO orders of magnitude less conductive, at room temperature, than the two sulfide systems. However, this is not the case for tetragonal LGPO, which, although less stable than its orthorhombic allotrope, shows at room temperature a conductivity comparable to orthorhombic and tetragonalLGPS, and, if synthesized, could make a very attractive Li-ion conductor.

show abstract

Section: B Tracer Diffusionsupporting

confidence: 91%

“…[122], belongs to the same space group as γ-Li 3 PO 4 P nma, #62) and for which the moderate ionic conductivity of 1.8 × 10 −6 Scm −1 at 40 o C is reported in Ref. [123] (see also Refs. [119,120]).…”

Section: Introductionmentioning

confidence: 99%

Electrolytes for Li-ion all-solid-state batteries: a first-principles comparative study of Li10GeP2O12 and Li10GeP2S12 in the LISICON and LGPS phases

Materzanini,

Kahle,

Marcolongo

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…The value of 1.8 µS cm -1 was reached at 40 °C. 22 The very similar value of conductivity measured for single crystals 22 and sintered pellets 10,43 suggests that the secondary phases in the sample, shown by XRD, do not affect significantly the transport properties.…”

Section: Lgpo Ionic Conductivitymentioning

confidence: 81%

Li_4–xGe_1–xP_xO₄, a Potential Solid-State Electrolyte for All-Oxide Microbatteries

Gilardi

Materzanini

Kahle

et al. 2020

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

Solid-state electrolytes for Li-ion batteries are attracting growing interest as they allow building safer batteries, also using lithium metal anodes. Here we studied a compound in the lithium superionic conductor (LISICON) family, i.e. Li4-xGe1-xPxO4 (LGPO). Thin films were deposited via pulsed laser deposition and their electrical properties were compared with ceramic pellets. A detailed characterization of the microstructure shows that thin films can be deposited fully crystalline at higher temperatures but also partially amorphous at room temperature. The conductivity is not strongly influenced by the presence of grain boundaries, exposure to air or lithium deficiencies. First-principles molecular dynamics simulations were employed to calculate the lithium ion diffusion profile and the conductivity at various temperatures of the ideal LGPO crystal. Simulations gives the upper limit of conductivity for a defect free crystal, which is in the range of 10-2 S cm-1 at 300 °C The ease of thin film fabrication, the room-temperature Li-ion conductivity in the range of a few µS cm-1 make LGPO very appealing electrolyte material for thin film all-solid-state all-oxide microbatteries.

show abstract

“…Among the analyzed specimens, Li 14 ZnGeO 4 presented good conductivity (8 S cm −1 at 300 • C). Ivanov-Shitz and Kireev [501] reported that the conductivity of single crystal Li 3.34 P 0.66 Ge 0.34 O 4 was~1.8 × 10 −6 and 3.7 × 10 −2 S cm −1 at 40 and 400 • C, respectively.…”

Section: Superionic Conductor-type Structure Oxide Electrolytesmentioning

confidence: 99%

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

et al. 2020

View full text Add to dashboard Cite

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.

show abstract

Growth and ionic conductivity of Li3 + x P1 − x GexO4 (x = 0.34) single crystals

Cited by 10 publications

References 5 publications

Electrolytes for Li-ion all-solid-state batteries: a first-principles comparative study of Li10GeP2O12 and Li10GeP2S12 in the LISICON and LGPS phases

Electrolytes for Li-ion all-solid-state batteries: a first-principles comparative study of Li10GeP2O12 and Li10GeP2S12 in the LISICON and LGPS phases

Li_4–xGe_1–xP_xO₄, a Potential Solid-State Electrolyte for All-Oxide Microbatteries

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

Contact Info

Product

Resources

About

Growth and ionic conductivity of Li3 + x P1 − x GexO4 (x = 0.34) single crystals

Cited by 10 publications

References 5 publications

Electrolytes for Li-ion all-solid-state batteries: a first-principles comparative study of Li10GeP2O12 and Li10GeP2S12 in the LISICON and LGPS phases

Electrolytes for Li-ion all-solid-state batteries: a first-principles comparative study of Li10GeP2O12 and Li10GeP2S12 in the LISICON and LGPS phases

Li4–xGe1–xPxO4, a Potential Solid-State Electrolyte for All-Oxide Microbatteries

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

Contact Info

Product

Resources

About

Li_4–xGe_1–xP_xO₄, a Potential Solid-State Electrolyte for All-Oxide Microbatteries