A Study of Li[sub.3.8]Ge[sub.0.9]S[sub.0.1]O[sub.4] Solid Electrolyte Stability Relative to Electrode Materials of Lithium Power Sources

• Published in: Batteries (Basel) Vol. 9; no. 2
• Main Authors: Shchelkanova, Mariya, Shekhtman, Georgiy, Pershina, Svetlana
• Format: Journal Article
• Language: English
• Published: MDPI AG 01.01.2023
• Subjects: Analysis; Composition; Design and construction; Electrodes; Electrolytes; Lithium cells; Materials; Stability; Russia
• ISSN: 2313-0105; 2313-0105
• DOI: 10.3390/batteries9020066

The stability of Li[sub.3.8] Ge[sub.0.9] S[sub.0.1] O[sub.4] lithium-conducting solid electrolyte versus lithium metal and Li-V bronze Li[sub.1.3] V[sub.3] O[sub.8] is studied in the present research. Isothermal heat treatment and thermal analysis of the mixtures of Li[sub.1.3] V[sub.3] O[sub.8] and Li[sub.3.8] Ge[sub.0.9] S[sub.0.1] O[sub.4] powders indicate that there is no interaction between them below 300-350 °C. Moreover, Li[sub.3.8] Ge[sub.0.9] S[sub.0.1] O[sub.4] solid electrolyte is stable versus lithium at 100 °C for 240 h. A model of a lithium-ion power source with a Li[sub.1.3] V[sub.3] O[sub.8] -based cathode and a lithium metal anode is assembled and tested. The data obtained show that Li[sub.3.8] Ge[sub.0.9] S[sub.0.1] O[sub.4] can be used in all-solid-state medium-temperature lithium and lithium-ion batteries.