A new ultrafast superionic Li-conductor: ion dynamics in Li11Si2PS12 and comparison with other tetragonal LGPS-type electrolytes (original) (raw)
* Corresponding authors
a Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569 Stuttgart, Germany
E-mail: a.kuhn@fkf.mpg.de, b.lotsch@fkf.mpg.de
b Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 München, Germany
c Nanosystems Initiative Munich (NIM) and Center for Nanoscience (CeNS), Schellingstr. 4, 80799 München, Germany
Abstract
We report on a new ultrafast solid electrolyte of the composition Li11Si2PS12, which exhibits a higher room-temperature Li ion diffusivity than the present record holder Li10GeP2S12. We discuss the high-pressure synthesis and ion dynamics of tetragonal Li11Si2PS12, and comparison is made with our investigations of related members of the LMePS family, i.e. electrolytes of the general formula Li11−_x_Me2−_x_P1+_x_S12 with Me = Ge, Sn : Li10GeP2S12, Li7GePS8, Li10SnP2S12. The structure and dynamics were studied with multiple complementary techniques and the macroscopic diffusion could be traced back to fast Li ion hopping in the crystalline lattice. A clear correlation between the diffusivity and the unit cell volume of the LGPS-type electrolytes was observed.
This article is Open Access
Please wait while we load your content... Something went wrong. Try again?
Supplementary files
Article information
DOI
https://doi.org/10.1039/C4CP02046D
Article type
Paper
Submitted
11 May 2014
Accepted
30 May 2014
First published
30 May 2014
This article is Open Access
Download Citation
Phys. Chem. Chem. Phys., 2014,16, 14669-14674
Permissions
A new ultrafast superionic Li-conductor: ion dynamics in Li11Si2PS12 and comparison with other tetragonal LGPS-type electrolytes
A. Kuhn, O. Gerbig, C. Zhu, F. Falkenberg, J. Maier and B. V. Lotsch,Phys. Chem. Chem. Phys., 2014, 16, 14669DOI: 10.1039/C4CP02046D
This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.
Read more about how to correctly acknowledge RSC content.