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

1
Institute of Machinery, Materials, and Transport, Peter the Great St. Petersburg Polytechnic University, 195251 Saint Petersburg, Russia
2
CHN/RUS New Energy and Material Technology Research Institute, Huzhou 313100, China
*
Author to whom correspondence should be addressed.
Academic Editor: Alessandro DellEra
Materials 2022, 15(1), 281; https://doi.org/10.3390/ma15010281
Received: 9 December 2021 / Revised: 22 December 2021 / Accepted: 27 December 2021 / Published: 31 December 2021
(This article belongs to the Section Energy Materials)
Solid-state reaction was used for Li7La3Zr2O12 material synthesis from Li2CO3, La2O3 and ZrO2 powders. Phase investigation of Li7La3Zr2O12 was carried out by x-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive x-ray spectroscopy (EDS) methods. The thermodynamic characteristics were investigated by calorimetry measurements. The molar heat capacity (Cp,m), the standard enthalpy of formation from binary compounds (ΔoxHLLZO) and from elements (ΔfHLLZO), entropy (S0298), the Gibbs free energy of the Li7La3Zr2O12 formation (∆f G0298) and the Gibbs free energy of the LLZO reaction with metallic Li (∆rGLLZO/Li) were determined. The corresponding values are Cp,m = 518.135 + 0.599 × T − 8.339 × T−2, (temperature range is 298–800 K), ΔoxHLLZO = −186.4 kJ·mol−1, ΔfHLLZO = −9327.65 ± 7.9 kJ·mol−1, S0298 = 362.3 J·mol−1·K−1, ∆f G0298 = −9435.6 kJ·mol−1, and ∆rGLLZO/Li = 8.2 kJ·mol−1, respectively. Thermodynamic performance shows the possibility of Li7La3Zr2O12 usage in lithium-ion batteries. View Full-Text
Keywords: lithium-ion battery; solid-state electrolyte; lithium-ion thermodynamics; solid-state synthesis lithium-ion battery; solid-state electrolyte; lithium-ion thermodynamics; solid-state synthesis
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MDPI and ACS Style

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. https://doi.org/10.3390/ma15010281

AMA Style

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(1):281. https://doi.org/10.3390/ma15010281

Chicago/Turabian Style

Aleksandrov, Daniil, Pavel Novikov, Anatoliy Popovich, and Qingsheng Wang. 2022. "Superionic Solid Electrolyte Li7La3Zr2O12 Synthesis and Thermodynamics for Application in All-Solid-State Lithium-Ion Batteries" Materials 15, no. 1: 281. https://doi.org/10.3390/ma15010281

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