2020
DOI: 10.26434/chemrxiv.13140251.v1
|View full text |Cite
Preprint
|
Sign up to set email alerts
|

Two-Dimensional Substitution: Towards a Better Understanding of the Structure-Transport Correlations in the Li-Superionic Thio-LISICONs

Abstract: A deeper understanding of the relationships among composition‒structure‒transport properties in inorganic solid ionic conductors is of paramount importance to develop highly conductive phases for future employment in solid‒state Li‒ion battery applications. In order to shed light on the mechanisms that regulate these relationships, in this work we perform a “<i>two-dimensional</i>” substitution series in the thio-LISICON family Li<sub>4</sub>Ge<sub>1‒<i>x</i></sub&g… Show more

Help me understand this report
View published versions

Search citation statements

Order By: Relevance

Paper Sections

Select...
4
1

Citation Types

1
15
0

Year Published

2021
2021
2021
2021

Publication Types

Select...
2
1

Relationship

3
0

Authors

Journals

citations
Cited by 3 publications
(16 citation statements)
references
References 0 publications
1
15
0
Order By: Relevance
“…The four polycrystalline samples Li 4 MCh 4 (M = Sn, Ge; Ch = S, Se) investigated were prepared by following solid-state syntheses routes; the exact synthesis conditions can be found elsewhere . The same holds for the structural characterization by neutron powder diffraction; the corresponding data of the samples are presented elsewhere. , The corresponding diffractograms were collected at the Oak Ridge spallation neutron source (SNS, Oak Ridge National Laboratory) by using the PAC automatic sample changer mounted at the POWGEN diffractometer (BM11-A beamline). , Li 4 SnS 4 and Li 4 GeS 4 crystallize with Pnma space group and turned out to be phase pure . While Li 4 GeSe 4 shows 0.5% GeSe 2 , for Li 4 SnSe 4 2.5% Li 2 Se and 2.3% SnSe 2 were found .…”
Section: Experimental Methodsmentioning
confidence: 99%
See 3 more Smart Citations
“…The four polycrystalline samples Li 4 MCh 4 (M = Sn, Ge; Ch = S, Se) investigated were prepared by following solid-state syntheses routes; the exact synthesis conditions can be found elsewhere . The same holds for the structural characterization by neutron powder diffraction; the corresponding data of the samples are presented elsewhere. , The corresponding diffractograms were collected at the Oak Ridge spallation neutron source (SNS, Oak Ridge National Laboratory) by using the PAC automatic sample changer mounted at the POWGEN diffractometer (BM11-A beamline). , Li 4 SnS 4 and Li 4 GeS 4 crystallize with Pnma space group and turned out to be phase pure . While Li 4 GeSe 4 shows 0.5% GeSe 2 , for Li 4 SnSe 4 2.5% Li 2 Se and 2.3% SnSe 2 were found .…”
Section: Experimental Methodsmentioning
confidence: 99%
“…The four samples differ in Li occupation and thus in their Li sublattices. As resolved by neutron powder diffraction, Li 4 GeS 4 and Li 4 SnSe 4 are isostructural and show two different 4-fold coordinated Li sites (Li1, Li2) and one 6-fold Li site (Li3). This is in contrast to Li 4 SnS 4 and Li 4 GeSe 4 which each show an additional Li site in a distorted octahedral (Li4) and in a distorted tetrahedral pocket (Li2′), respectively.…”
Section: Introductionmentioning
confidence: 99%
See 2 more Smart Citations
“…1 The application of solid electrolytes improve the battery not only in terms of reduced risk of combustion, compared to liquid electrolytes, but also by enabling battery use at a wider temperature range and higher current densities for operation. 1,2 The search for the replacement of liquid electrolytes led to the discovery of several promising solid electrolytes including garnets, [3][4][5] Li10GeP2S12 6-8 , argyrodites [9][10][11] and thio-LISICONs [12][13][14][15] , all of which were investigated thoroughly by iso-or aliovalent substitutions to determine influences on ionic transport, for instance the width of diffusion pathway, 5,16,17 lattice polarizability 9,18,19 or Li + /vacancy density. 13,[20][21][22] Recently, the ternary halide electrolytes Li3MX6 (M = Y, Er, In, Sc and X = Cl, Br, I) have drawn attention for exhibiting conductivities in the mS•cm -1 -range at room temperature in combination with an enhanced electrochemical stability compared to the sulfide electrolytes.…”
Section: Introductionmentioning
confidence: 99%