Synthesis and characterization of Na3PS4 and Na 2.85 P 0.85 W 0.15 S 4 as solid electrolytes - Archive ouverte HAL
Poster De Conférence Année : 2023

Synthesis and characterization of Na3PS4 and Na 2.85 P 0.85 W 0.15 S 4 as solid electrolytes

Résumé

The next generations of postlithium systems are already under development. These hold the promise of overcoming some of the remaining challenges associated with current lithium-ion battery technology related to safety, the need for scarce resources and their environmental impacts. Na₃PS₄ (NPS) is a sodium superionic conductor that crystallizes in the I-43m space group and reaches ionic conductivities in the range of the mS/cm. • X-ray diffractograms show a cubic crystalline phase of Na3PS4 and a mixture of Na3PS4 and WS2 for the Na2.85P0.85W0.15S4 sample. • SEM-EDX results confirmed that a reaction occurs between the sample holder (Macor®) and the solid electrolytes during the heat treatments. • Electrochemical results show that a heat treatment under Ar slightly improves the ionic conductivity for the NPS sample, while the HTs in presence of Macor® spacer turn the materials into ionic insulants.
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Dates et versions

hal-04189945 , version 1 (29-08-2023)

Identifiants

  • HAL Id : hal-04189945 , version 1

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Alisson A Iles, Marta Mirolo, Sergio Federico Mayer. Synthesis and characterization of Na3PS4 and Na 2.85 P 0.85 W 0.15 S 4 as solid electrolytes. Symposium UGA-ESRF, May 2023, Grenoble, France. ⟨hal-04189945⟩
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