scholarly journals The effect of nanoscaffold porosity and surface chemistry on the Li-ion conductivity of LiBH4–LiNH2/metal oxide nanocomposites

2020 ◽  
Vol 8 (39) ◽  
pp. 20687-20697
Author(s):  
Laura M. de Kort ◽  
Justine Harmel ◽  
Petra E. de Jongh ◽  
Peter Ngene
Keyword(s):  
Ionic Conductivity ◽  
Metal Oxide ◽  
Surface Chemistry ◽  
Ion Conductivity ◽  
Li Ion

Tuning the ionic conductivity of LiBH4–LiNH2/oxide nanocomposites by controlling the surface chemistry as well as the porosity of the metal oxide nanoscaffold materials.

scholarly journals Upscaling of LATP synthesis: Stoichiometric screening of phase purity and microstructure to ionic conductivity maps

Ionics ◽  
2021 ◽  
Vol 27 (5) ◽  
pp. 2017-2025
Author(s):  
Nikolas Schiffmann ◽  
Ethel C. Bucharsky ◽  
Karl G. Schell ◽  
Charlotte A. Fritsch ◽  
Michael Knapp ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Sol Gel ◽  
Ion Conductivity ◽  
Process Window ◽  
Lithium Aluminum ◽  
Potential Candidate ◽  
Secondary Phases ◽  
X Ray Diffraction ◽  
Battery Cell ◽  
Li Ion

AbstractLithium aluminum titanium phosphate (LATP) is known to have a high Li-ion conductivity and is therefore a potential candidate as a solid electrolyte. Via sol-gel route, it is already possible to prepare the material at laboratory scale in high purity and with a maximum Li-ion conductivity in the order of 1·10−3 s/cm at room temperature. However, for potential use in a commercial, battery-cell upscaling of the synthesis is required. As a first step towards this goal, we investigated whether the sol-gel route is tolerant against possible deviations in the concentration of the precursors. In order to establish a possible process window for sintering, the temperature interval from 800 °C to 1100 °C and holding times of 10 to 480 min were evaluated. The resulting phase compositions and crystal structures were examined by X-ray diffraction. Impedance spectroscopy was performed to determine the electrical properties. The microstructure of sintered pellets was analyzed by scanning electron microscopy and correlated to both density and ionic conductivity. It is shown that the initial concentration of the precursors strongly influences the formation of secondary phases like AlPO4 and LiTiOPO4, which in turn have an influence on ionic conductivity, densification behavior, and microstructure evolution.

Materials for All-Solid-State Lithium Ion Batteries

2013 ◽  
Vol 1496 ◽  
Author(s):  
Sumaletha Narayanan ◽  
Lina Truong ◽  
Venkataraman Thangadurai
Keyword(s):  
Ionic Conductivity ◽  
Chemical Stability ◽  
Room Temperature ◽  
Lithium Ion ◽  
Ion Conductivity ◽  
High Ionic Conductivity ◽  
Li Ion Batteries ◽  
Li Battery ◽  
Li Ion ◽  
Very High

ABSTRACTGarnet-type electrolytes are currently receiving much attention for applications in Li-ion batteries, as they possess high ionic conductivity and chemical stability. Doping the garnet structure has proved to be a good way to improve the Li ion conductivity and stability. The present study includes effects of Y- doping in Li5La3Nb2O12 on Li ion conductivity and stability of “Li5+2xLa3Nb2-xYxO12” (0.05 ≤ x ≤ 0.75) under various environments, as well as chemical stability studies of Li5+xBaxLa3-xM2O12 (M = Nb, Ta) in water. “Li6.5La3Nb1.25Y0.75O12” showed a very high ionic conductivity of 2.7 х 10−4 Scm−1 at 25 °C, which is comparable to the highest value reported for garnet-type compounds, e.g., Li7La3Zr2O12. The selected members show very good stability against high temperatures, water, Li battery cathode Li2CoMn3O8 and carbon. The Li5+xBaxLa3-xNb2O12 garnets have shown to readily undergo an ion-exchange (proton) reaction under water treatment at room temperature; however, the Ta-based garnet appears to exhibit considerably higher stability under the same conditions.

Li+-ion conductivity of BPO4–Li2O; the relation between crystal structure and ionic conductivity

1999 ◽  
Vol 119 (1-4) ◽  
pp. 159-164 ◽  
Author(s):  
M.J.G. Jak ◽  
E.M. Kelder ◽  
Z.A. Kaszkur ◽  
J. Pielaszek ◽  
J. Schoonman
Keyword(s):  
Crystal Structure ◽  
Ionic Conductivity ◽  
Ion Conductivity ◽  
Li Ion

scholarly journals Tuning ionic conductivity to enable all-climate solid-state Li-S batteries with superior performances

2021 ◽  
Author(s):  
Chaochao Wei ◽  
Chuang Yu ◽  
Linfeng Peng ◽  
Ziqi Zhang ◽  
Nuonan Xue ◽  
...  
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Ion Mobility ◽  
Ion Conductivity ◽  
Electrochemical Performances ◽  
The Poor ◽  
Li Ion

Low Li-ion mobility of the cathode mixture is one of the major obstacles for Li2S-based solid-state Li-S achieving excellent electrochemical performances. The poor Li-ion conductivity is due to the intrinsic...

scholarly journals Development of Novel High Li-Ion Conductivity Hybrid Electrolytes of Li10GeP2S12 (LGPS) and Li6.6La3Zr1.6Sb0.4O12 (LLZSO) for Advanced All-Solid-State Batteries

Oxygen ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 16-21
Author(s):  
Linsheng Wang
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Weight Ratio ◽  
Superionic Conductor ◽  
Ion Conductivity ◽  
Solid State Batteries ◽  
Li Ion ◽  
Li Batteries ◽  
All Solid State Batteries

A lithium superionic conductor of Li10GeP2S12 that exhibits the highest lithium ionic conductivity among the sulfide electrolytes and the most promising oxide electrolytes, namely, Li6.6La3Sr0.06Zr1.6Sb0.4O12 and Li6.6La3Zr1.6Sb0.4O12, are successfully synthesized. Novel hybrid electrolytes with a weight ratio of Li6.6La3Zr1.6Sb0.4O12 to Li10GeP2S12 from 1/1 to 1/3 with the higher Li-ion conductivity than that of the pure Li10GeP2S12 electrolyte are developed for the fabrication of the advanced all-solid-state Li batteries.

Lithium migration pathways at the composite interface of LiBH4 and two-dimensional MoS2 enabling superior ionic conductivity at room temperature

2020 ◽  
Vol 22 (7) ◽  
pp. 4096-4105 ◽  
Author(s):  
Zhixiang Liu ◽  
Mengyuan Xiang ◽  
Yao Zhang ◽  
Huaiyu Shao ◽  
Yunfeng Zhu ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Dft Calculations ◽  
Room Temperature ◽  
Ion Conductivity ◽  
Two Dimensional ◽  
Composite Interface ◽  
Li Ion ◽  
Migration Pathways ◽  
Lithium Migration

A novel interface with high Li-ion conductivity has been formulated and the results have been verified by DFT calculations.

Enhanced room temperature ionic conductivity of the LiBH4·1/2NH3–Al2O3 composite

2021 ◽  
Author(s):  
Ruixue Zhang ◽  
Wanying Zhao ◽  
Zhenzhen Liu ◽  
Shanghai Wei ◽  
Yigang Yan ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Room Temperature ◽  
Ion Conductivity ◽  
Al2o3 Composite

In situ formed amorphous LiBH4·1/2NH3 on the surface of Al2O3 nanoparticles results in an enhanced ion conductivity of 1.1 × 10−3 S cm−1 at room temperature.

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