Chromium-Containing Li1.5Al0.5Ge1.5(PO4)3 Glass-Ceramics: Preparation and Electrical Conductivity

Key Points

• The aim is to evaluate the ionic and electronic conductivity of chromium-containing Li1.5Al0.5Ge1.5(PO4)3 glass-ceramics for all-solid-state batteries.
• Produced glass-ceramics through glass crystallization.
• Characterized products using X-ray diffraction (XRD).
• Measured ionic conductivity using varying temperatures and compositions.
• Assessed electronic conductivity using DC polarization with blocking platinum electrodes.
• All samples exhibited room-temperature Li+ conductivity around 10−4 S/cm.
• Li1.6Al0.5Cr0.1Ge1.4P3O12 − δ had the highest ionic conductivity of 3.43 × 10−4 S/cm at 25°C.
• At 100°C, this composition's ionic conductivity increased to 4.26 × 10−3 S/cm.
• Electronic conductivity remained below 10−9 S/cm for all compositions.

Abstract