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Thermal evolution of NASICON type solid-state electrolytes with lithium at high temperature via in situ scanning
Shirin Kaboli1, Gabriel Girard1, Wen Zhu1
1Hydro-Québec's Center of Excellence in Transportation Electrification and Energy Storage, Varennes, Québec J3X 1S1, Canada. paolella.andrea2@hydroquebec.com.
Abstract:
We present the thermal evolution of two NASICON-type ceramics namely LATP (Li1+AlTi2-(PO4)3) and LAGP (Li1+AlGe2-(PO4)3) by monitoring the electrode-electrolyte interfaces (i.e., Li/LATP and Li/LAGP) at temperatures up to 330 °C via in situ scanning electron microscopy, post-mortem energy-dispersive spectroscopy, and X-ray diffraction. Upon melting of Li and contacting electrolytes, LAGP decomposes completely to form Li based alloys, while LATP is partially decomposed without alloying.
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