Fig. 4: Chemical stability of Na3PS4−xOx (x = 0, 0.15, 0.30, and 0.60) SEs towards Na metal at 60 °C. | Nature Communications

Fig. 4: Chemical stability of Na3PS4−xOx (x = 0, 0.15, 0.30, and 0.60) SEs towards Na metal at 60 °C.

From: An electrochemically stable homogeneous glassy electrolyte formed at room temperature for all-solid-state sodium batteries

Fig. 4: Chemical stability of Na3PS4−xOx (x = 0, 0.15, 0.30, and 0.60) SEs towards Na metal at 60 °C.The alternative text for this image may have been generated using AI.

a Electrochemical impedance spectra (EIS) evolution of freshly made Na|SE |Na symmetric cells (black curve) vs after 5 h of rest (red curve); XPS spectra of b P 2p and c S 2p for the interface between Na and SE; d, e Depth profiles of fragments from the ToF-SIMS spectra of the Na|Na3PS4, and Na|Na3PS3.4O0.6 interfaces after 5 h of contact.

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