Duchardt, Marc, Neuberger, Sven, Ruschewitz, Uwe ORCID: 0000-0002-6511-6894, Krauskopf, Thorben, Zeier, Wolfgang G., der Guenne, Jorn Schmedt auf, Adam, Stefan, Roling, Bernhard and Dehnen, Stefanie ORCID: 0000-0002-1325-9228 (2018). Superion Conductor Na11.1Sn2.1P0.9Se12: Lowering the Activation Barrier of Na plus Conduction in Quaternary 1-4-5-6 Electrolytes. Chem. Mat., 30 (12). S. 4134 - 4140. WASHINGTON: AMER CHEMICAL SOC. ISSN 1520-5002

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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.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Duchardt, MarcUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Neuberger, SvenUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ruschewitz, UweUNSPECIFIEDorcid.org/0000-0002-6511-6894UNSPECIFIED
Krauskopf, ThorbenUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zeier, Wolfgang G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
der Guenne, Jorn Schmedt aufUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Adam, StefanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Roling, BernhardUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dehnen, StefanieUNSPECIFIEDorcid.org/0000-0002-1325-9228UNSPECIFIED
URN: urn:nbn:de:hbz:38-182552
DOI: 10.1021/acs.chemmater.8b01656
Journal or Publication Title: Chem. Mat.
Volume: 30
Number: 12
Page Range: S. 4134 - 4140
Date: 2018
Publisher: AMER CHEMICAL SOC
Place of Publication: WASHINGTON
ISSN: 1520-5002
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
LITHIUM IONIC CONDUCTOR; ELECTROCHEMICAL STABILITY; SOLID-ELECTROLYTE; SODIUM; ENERGY; BATTERIES; SELENIUM; CATHODE; DYNAMICS; NA3SBS4Multiple languages
Chemistry, Physical; Materials Science, MultidisciplinaryMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/18255

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