Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Superionic Solid Electrolyte Li7La3Zr2O12 Synthesis and Thermodynamics for Application in All-Solid-State Lithium-Ion Batteries

Version 1 : Received: 9 December 2021 / Approved: 10 December 2021 / Online: 10 December 2021 (13:20:31 CET)

A peer-reviewed article of this Preprint also exists.

Aleksandrov, D.; Novikov, P.; Popovich, A.; Wang, Q. Superionic Solid Electrolyte Li7La3Zr2O12 Synthesis and Thermodynamics for Application in All-Solid-State Lithium-Ion Batteries. Materials 2022, 15, 281. Aleksandrov, D.; Novikov, P.; Popovich, A.; Wang, Q. Superionic Solid Electrolyte Li7La3Zr2O12 Synthesis and Thermodynamics for Application in All-Solid-State Lithium-Ion Batteries. Materials 2022, 15, 281.

Journal reference: Materials 2021, 15, 281
DOI: 10.3390/ma15010281

Abstract

Li7La3Zr2O12Solid-state reaction was used for Li7La3Zr2O12 material synthesis from Li2CO3, La2O3 and ZrO2 powders. Phase investigation by XRD, SEM and EDS methods of Li7La3Zr2O12 were carried out. The molar heat capacity of Li7La3Zr2O12 at constant pressure in the temperature range 298-800 K should be calculated as Cp,m = 518.135+0.599 × T - 8.339 × T−2, where T is absolute temperature, . Thermodynamic characteristics of Li7La3Zr2O12 were determined as next: entropy S0298 = 362.3 J mol-1 K-1, molar enthalpy of dissolution ΔdHLlZO = ˗ 1471.73 ± 29.39 kJ mol−1, the standard enthalpy of formation from elements ΔfH0 = ˗ 9327.65 ± 7.9 kJ mol−1, the standard Gibbs free energy of formation ∆f G0298 = ˗9435.6 kJ mol-1.

Keywords

lithium-ion battery; solid-state electrolyte; lithium-ion thermodynamics; solid-state synthesis

Subject

MATERIALS SCIENCE, General Materials Science

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