Li-Ion solvation in propylene carbonate electrolytes determined by molecular rotational measurements

2019 ◽  
Vol 21 (20) ◽  
pp. 10417-10422 ◽  
Author(s):  
Haotian Jiang ◽  
Qi Zhang ◽  
Yutong Zhang ◽  
Laizhi Sui ◽  
Guorong Wu ◽  
...  
Keyword(s):  
Propylene Carbonate ◽  
Vibrational Spectroscopy ◽  
Salt Concentration ◽  
Ion Conductivity ◽  
Ion Solvation ◽  
Solvation Structure ◽  
Li Ion ◽  
Ultrafast Vibrational Spectroscopy

We report the solvation structure of Li+ in LiPF6–PC solutions using ultrafast vibrational spectroscopy. The results illustrate the salt concentration-dependent solvation structures, in accordance with the variation of ion conductivity.

Unusual Li+Ion Solvation Structure in Bis(fluorosulfonyl)amide Based Ionic Liquid

2013 ◽  
Vol 117 (38) ◽  
pp. 19314-19324 ◽  
Author(s):  
Kenta Fujii ◽  
Hiroshi Hamano ◽  
Hiroyuki Doi ◽  
Xuedan Song ◽  
Seiji Tsuzuki ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ion Solvation ◽  
Solvation Structure ◽  
Li Ion

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.

scholarly journals Li2(BH4)(NH2) Nanoconfined in SBA-15 as Solid-State Electrolyte for Lithium Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 946
Author(s):  
Qianyi Yang ◽  
Fuqiang Lu ◽  
Yulin Liu ◽  
Yijie Zhang ◽  
Xiujuan Wang ◽  
...  
Keyword(s):  
Solid State ◽  
High Performance ◽  
Coulombic Efficiency ◽  
Specific Capacity ◽  
Transference Number ◽  
Electrochemical Stability ◽  
Ion Conductivity ◽  
Solid State Batteries ◽  
Li Ion ◽  
Conduction Properties

Solid electrolytes with high Li-ion conductivity and electrochemical stability are very important for developing high-performance all-solid-state batteries. In this work, Li2(BH4)(NH2) is nanoconfined in the mesoporous silica molecule sieve (SBA-15) using a melting–infiltration approach. This electrolyte exhibits excellent Li-ion conduction properties, achieving a Li-ion conductivity of 5.0 × 10−3 S cm−1 at 55 °C, an electrochemical stability window of 0 to 3.2 V and a Li-ion transference number of 0.97. In addition, this electrolyte can enable the stable cycling of Li|Li2(BH4)(NH2)@SBA-15|TiS2 cells, which exhibit a reversible specific capacity of 150 mAh g−1 with a Coulombic efficiency of 96% after 55 cycles.

scholarly journals Solvation Structure around the Li+ Ion in Mixed Cyclic/Linear Carbonate Solutions Unveiled by the Raman Noncoincidence Effect

2015 ◽  
Vol 6 (16) ◽  
pp. 3296-3302 ◽  
Author(s):  
Maria Grazia Giorgini ◽  
Kazuma Futamatagawa ◽  
Hajime Torii ◽  
Maurizio Musso ◽  
Stefano Cerini
Keyword(s):  
Carbonate Solutions ◽  
Solvation Structure ◽  
Li Ion

Relevance between the Bulk Density and Li+-Ion Conductivity in a Porous Electrolyte: The Case of Li[Li1/3Ti5/3]O4

2015 ◽  
Vol 7 (36) ◽  
pp. 20314-20321 ◽  
Author(s):  
Kazuhiko Mukai ◽  
Naoyoshi Nunotani ◽  
Ryuta Moriyasu
Keyword(s):  
Bulk Density ◽  
Ion Conductivity ◽  
Li Ion
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