Journal article

Publication year: 2018

Pages: 4134-4139

Journal: Chemistry of Materials

Volume number: 30

Issue number: 12

ISSN: 0897-4756

eISSN: 1520-5002

DOI Link: https://doi.org/10.1021/acs.chemmater.8b01656

Publisher: American Chemical Society

Abstract: 
We report on the first quaternary selenide-based Na+ superionic solid electrolyte, Na11.1Sn2.1P0.9 Se-12 (further denoted as NaSnPSe), which shows virtually the same room temperature Na + ion conductivity (3.0 mS/cm) as the current record holder for sulfide-based systems, Na11Sn2PS12 (denoted as NaSnPS), but with a considerably lower activation energy of 0.30 eV. Both electrolytes belong to the currently highly topical class of solids comprising group I, IV, V, and VI atoms, which we summarize as 1-4-5-6 electrolytes. Herein, they are compared to each other with regard to their structural characteristics and the resulting ion transport properties. The lower activation energy of Na+ ion transport in NaSnPSe is well in line with the results of speed of sound measurements, Raman spectroscopy, bond-valence site energy calculations, and molecular dynamics simulations, all of which point to a lower lattice rigidity and to weaker Na-chalcogen interactions as compared to NaSnPS.

Harvard Citation style: Duchardt, M., Neuberger, S., Ruschewitz, U., Krauskopf, T., Zeier, W., der Guenne, J., et al. (2018) Superion Conductor Na_11.1Sn_2.1P_0.9Se₁₂: Lowering the Activation Barrier of Na plus Conduction in Quaternary 1-4-5-6 Electrolytes, Chemistry of Materials, 30(12), pp. 4134-4139. https://doi.org/10.1021/acs.chemmater.8b01656

APA Citation style: Duchardt, M., Neuberger, S., Ruschewitz, U., Krauskopf, T., Zeier, W., der Guenne, J., Adam, S., Roling, B., & Dehnen, S. (2018). Superion Conductor Na_11.1Sn_2.1P_0.9Se₁₂: Lowering the Activation Barrier of Na plus Conduction in Quaternary 1-4-5-6 Electrolytes. Chemistry of Materials. 30(12), 4134-4139. https://doi.org/10.1021/acs.chemmater.8b01656