Universität zu Köln

Duchardt, Marc, Ruschewitz, Uwe ORCID: 0000-0002-6511-6894, Adams, Stefan ORCID: 0000-0003-0710-135X, Dehnen, Stefanie ORCID: 0000-0002-1325-9228 and Roling, Bernhard (2018). Vacancy-Controlled Na+ Superion Conduction in Na11Sn2PS12. Angew. Chem.-Int. Edit., 57 (5). S. 1351 - 1356. WEINHEIM: WILEY-V C H VERLAG GMBH. ISSN 1521-3773

Full text not available from this repository.

Abstract

Highly conductive solid electrolytes are crucial to the development of efficient all-solid-state batteries. Meanwhile, the ion conductivities of lithium solid electrolytes match those of liquid electrolytes used in commercial Li+ ion batteries. However, concerns about the future availability and the price of lithium made Na+ ion conductors come into the spotlight in recent years. Here we present the superionic conductor Na11Sn2PS12, which possesses a room temperature Na+ conductivity close to 4mScm(-1), thus the highest value known to date for sulfide-based solids. Structure determination based on synchrotron X-ray powder diffraction data proves the existence of Na+ vacancies. As confirmed by bond valence site energy calculations, the vacancies interconnect ion migration pathways in a 3D manner, hence enabling high Na+ conductivity. The results indicate that sodium electrolytes are about to equal the performance of their lithium counterparts.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Duchardt, Marc UNSPECIFIED UNSPECIFIED UNSPECIFIED Ruschewitz, Uwe UNSPECIFIED orcid.org/0000-0002-6511-6894 UNSPECIFIED Adams, Stefan UNSPECIFIED orcid.org/0000-0003-0710-135X UNSPECIFIED Dehnen, Stefanie UNSPECIFIED orcid.org/0000-0002-1325-9228 UNSPECIFIED Roling, Bernhard UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-198485
DOI:	10.1002/anie.201712769
Journal or Publication Title:	Angew. Chem.-Int. Edit.
Volume:	57
Number:	5
Page Range:	S. 1351 - 1356
Date:	2018
Publisher:	WILEY-V C H VERLAG GMBH
Place of Publication:	WEINHEIM
ISSN:	1521-3773
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SODIUM-ION BATTERIES; GLASS-CERAMIC ELECTROLYTES; CHALLENGES; NA3SBS4; DESIGN Multiple languages Chemistry, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/19848