Universität zu Köln

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:	Creators Email ORCID ORCID Put Code Duchardt, Marc UNSPECIFIED UNSPECIFIED UNSPECIFIED Neuberger, Sven UNSPECIFIED UNSPECIFIED UNSPECIFIED Ruschewitz, Uwe UNSPECIFIED orcid.org/0000-0002-6511-6894 UNSPECIFIED Krauskopf, Thorben UNSPECIFIED UNSPECIFIED UNSPECIFIED Zeier, Wolfgang G. UNSPECIFIED UNSPECIFIED UNSPECIFIED der Guenne, Jorn Schmedt auf UNSPECIFIED UNSPECIFIED UNSPECIFIED Adam, Stefan UNSPECIFIED UNSPECIFIED UNSPECIFIED Roling, Bernhard UNSPECIFIED UNSPECIFIED UNSPECIFIED Dehnen, Stefanie UNSPECIFIED orcid.org/0000-0002-1325-9228 UNSPECIFIED
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:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Inorganic Chemistry
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language LITHIUM IONIC CONDUCTOR; ELECTROCHEMICAL STABILITY; SOLID-ELECTROLYTE; SODIUM; ENERGY; BATTERIES; SELENIUM; CATHODE; DYNAMICS; NA3SBS4 Multiple languages Chemistry, Physical; Materials Science, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/18255