Near constant loss regime in fast ionic conductors analyzed by impedance and NMR spectroscopies

2014 ◽  
Vol 16 (29) ◽  
pp. 15346-15354 ◽  
Author(s):  
Wilmer Bucheli ◽  
Kamel Arbi ◽  
Jesús Sanz ◽  
Dmitry Nuzhnyy ◽  
Stanislav Kamba ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Solid Electrolytes ◽  
Ion Conductivity ◽  
Ionic Conductors ◽  
Fast Ionic Conductors ◽  
Li Ion

Broadband impedance spectroscopy and NMR measurements experimentally prove that strong near constant loss contribution to the conductivity is not mandatory to present the highest Li ion conductivity in solid electrolytes.

scholarly journals Separating bulk from grain boundary Li ion conductivity in the sol–gel prepared solid electrolyte Li1.5Al0.5Ti1.5(PO4)3

2015 ◽  
Vol 3 (42) ◽  
pp. 21343-21350 ◽  
Author(s):  
Stefan Breuer ◽  
Denise Prutsch ◽  
Qianli Ma ◽  
Viktor Epp ◽  
Florian Preishuber-Pflügl ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Grain Boundary ◽  
Ion Transport ◽  
Solid Electrolyte ◽  
Transport Properties ◽  
Low Temperatures ◽  
Sol Gel ◽  
Ion Conductivity ◽  
Li Ion ◽  
Ceramic Electrolytes

Impedance spectroscopy measurements down to very low temperatures allowed for resolving bulk ion transport properties in highly conducting ceramic electrolytes.

scholarly journals Lithium-ion conductivity in Li6Y(BO3)3: a thermally and electrochemically robust solid electrolyte

2016 ◽  
Vol 4 (18) ◽  
pp. 6972-6979 ◽  
Author(s):  
Beatriz Lopez-Bermudez ◽  
Wolfgang G. Zeier ◽  
Shiliang Zhou ◽  
Anna J. Lehner ◽  
Jerry Hu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Solid Electrolyte ◽  
Solid Electrolytes ◽  
Lithium Ion ◽  
Ion Conductivity ◽  
Ion Diffusion ◽  
New Energy ◽  
Li Ion ◽  
Lithium Ion Conductivity ◽  
Storage Technologies

The development of new frameworks for solid electrolytes exhibiting fast Li-ion diffusion is critical for enabling new energy storage technologies.

scholarly journals Local Li-ion conductivity changes within Al stabilized Li7La3Zr2O12 and their relationship to three-dimensional variations of the bulk composition

2019 ◽  
Vol 7 (12) ◽  
pp. 6818-6831 ◽  
Author(s):  
Stefan Smetaczek ◽  
Andreas Wachter-Welzl ◽  
Reinhard Wagner ◽  
Daniel Rettenwander ◽  
Georg Amthauer ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Chemical Analysis ◽  
Bulk Composition ◽  
Three Dimensional ◽  
Ion Conductivity ◽  
Spatially Resolved ◽  
Li Ion

Investigating conductivity variations in Al stabilized LLZO by combining microelectrode impedance spectroscopy with spatially resolved chemical analysis.

Cationic covalent organic framework based all-solid-state electrolytes

2020 ◽  
Vol 4 (4) ◽  
pp. 1164-1173 ◽  
Author(s):  
Zhen Li ◽  
Zhi-Wei Liu ◽  
Zhen-Jie Mu ◽  
Chen Cao ◽  
Zeyu Li ◽  
...  
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid Electrolytes ◽  
Lithium Ion ◽  
Ion Conductivity ◽  
Li Ion Battery ◽  
Covalent Organic Framework ◽  
Li Ion ◽  
Lithium Ion Conductivity ◽  
Organic Framework

Two new imidazolium-based cationic COFs were synthesized and employed as all-solid electrolytes, and exhibited high lithium ion conductivity at high temperature. The assembled Li-ion battery displays preferable battery performance at 353 K.

scholarly journals Garnet to hydrogarnet: effect of post synthesis treatment on cation substituted LLZO solid electrolyte and its effect on Li ion conductivity

RSC Advances ◽  
2021 ◽  
Vol 11 (48) ◽  
pp. 30283-30294
Author(s):  
Charlotte Fritsch ◽  
Tatiana Zinkevich ◽  
Sylvio Indris ◽  
Martin Etter ◽  
Volodymyr Baran ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Solid Electrolyte ◽  
Strong Dependence ◽  
Ion Conductivity ◽  
Sample Treatment ◽  
Li Ion ◽  
Post Synthesis

Investigation of commercial Li7La3Zr2O12 (LLZO) with various substituents. Although impedance spectroscopy suggests something else: the ion conductivity does not show a strong dependence on the substituting cation, but rather on the sample treatment.

scholarly journals Enhanced Li-Ion Conductivity in Nanosized Li10GeP2S12

2020 ◽  
Author(s):  
James Dawson ◽  
Saiful Islam
Keyword(s):  
Solid Electrolytes ◽  
High Performance ◽  
Room Temperature ◽  
Ion Conductivity ◽  
Research Activity ◽  
Ion Conductivities ◽  
Significant Research ◽  
Solid State Batteries ◽  
Li Ion ◽  
Bulk System

<div>The discovery of the lithium superionic conductor Li10GeP2S12 (LGPS) has led to significant research activity on solid electrolytes for high-performance and safe solid-state batteries. LGPS exhibits a remarkably high room-temperature Li-ion conductivity of 12 mS/cm, comparable to</div><div>that of the liquid electrolytes used in current Li-ion batteries. Here, we predict that nanosizing of LGPS can be used to further enhance its already outstanding Li-ion conductivity. By utilizing state-of-the-art nanoscale molecular dynamics techniques, we are able to simulate the Li-ion conductivities of nanocrystalline LGPS systems with average grain sizes from 10 to 2 nm. Our results reveal that the Li-ion conductivity of LGPS increases with decreasing grain volume. For the smallest nanometric grain size, the Li-ion conductivity at room temperature is three times higher that of the bulk system. These findings reveal that nanosizing LGPS and related solid electrolytes could be an effective approach for enhancing their Li-ion conductivity.</div>

scholarly journals Enhanced Li-Ion Conductivity in Nanosized Li10GeP2S12

2020 ◽  
Author(s):  
James Dawson ◽  
Saiful Islam
Keyword(s):  
Solid Electrolytes ◽  
High Performance ◽  
Room Temperature ◽  
Ion Conductivity ◽  
Research Activity ◽  
Ion Conductivities ◽  
Significant Research ◽  
Solid State Batteries ◽  
Li Ion ◽  
Bulk System

<div>The discovery of the lithium superionic conductor Li10GeP2S12 (LGPS) has led to significant research activity on solid electrolytes for high-performance and safe solid-state batteries. LGPS exhibits a remarkably high room-temperature Li-ion conductivity of 12 mS/cm, comparable to</div><div>that of the liquid electrolytes used in current Li-ion batteries. Here, we predict that nanosizing of LGPS can be used to further enhance its already outstanding Li-ion conductivity. By utilizing state-of-the-art nanoscale molecular dynamics techniques, we are able to simulate the Li-ion conductivities of nanocrystalline LGPS systems with average grain sizes from 10 to 2 nm. Our results reveal that the Li-ion conductivity of LGPS increases with decreasing grain volume. For the smallest nanometric grain size, the Li-ion conductivity at room temperature is three times higher that of the bulk system. These findings reveal that nanosizing LGPS and related solid electrolytes could be an effective approach for enhancing their Li-ion conductivity.</div>

scholarly journals Highly efficient evaluation of diffusion networks in Li ionic conductors using a 3D-corrugation descriptor

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Arthur France-Lanord ◽  
Ryoji Asahi ◽  
Benoît Leblanc ◽  
Joohwi Lee ◽  
Erich Wimmer
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Density Functional Theory Calculation ◽  
Topological Analysis ◽  
Ion Conductivity ◽  
Three Dimensions ◽  
Ionic Conductors ◽  
Functional Theory ◽  
Highly Efficient ◽  
Li Ion

Abstract A highly efficient computational approach for the screening of Li ion conducting materials is presented and its performance is demonstrated for olivine-type oxides and thiophosphates. The approach is based on a topological analysis of the electrostatic (Coulomb) potential obtained from a single density functional theory calculation augmented by a Born-Mayer-type repulsive term between Li ions and the anions of the material. This 3D-corrugation descriptor enables the automatic determination of diffusion pathways in one, two, and three dimensions and reproduces migration barriers obtained from density functional theory calculations using nudged elastic band method within approximately 0.1 eV. Importantly, it correlates with Li ion conductivity. This approach thus offers an efficient tool for evaluating, ranking, and optimizing materials with high Li-ion conductivity.

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