An imidazopyrazine-derived anion for lithium conducting electrolyte application

RSC Advances ◽  
2015 ◽  
Vol 5 (123) ◽  
pp. 101917-101922 ◽  
Author(s):  
Leszek Niedzicki ◽  
Jędrzej Korczak ◽  
Anna Bitner ◽  
Maria Bukowska ◽  
Przemyslaw Szczecinski
Keyword(s):  
Ionic Conductivity ◽  
Transference Number ◽  
Cycling Performance ◽  
High Ionic Conductivity ◽  
First Time

Synthesized for the first time, a LiTDPI salt in EC : DMC (1 : 2) was tested as a lithium conducting electrolyte and it showed high ionic conductivity, a high lithium transference number and a good cycling performance.

A borate decorated anion-immobilized solid polymer electrolyte for dendrite-free, long-life Li metal batteries

2019 ◽  
Vol 7 (34) ◽  
pp. 19970-19976 ◽  
Author(s):  
Cheng Ma ◽  
Yiming Feng ◽  
Fangzhou Xing ◽  
Lin Zhou ◽  
Ying Yang ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolyte ◽  
Solid Polymer Electrolyte ◽  
Transference Number ◽  
High Ionic Conductivity ◽  
Solid Polymer ◽  
Lithium Metal ◽  
Lithium Metal Batteries ◽  
Long Life

A borate decorated anion-immobilized solid polymer electrolyte effectively integrates high ionic conductivity, high Li+ transference number and reasonably mechanical integrity, enabling long-term cycling stability for dendrite-free lithium metal batteries.

Infiltrated porous oxide monoliths as high lithium transference number electrolytes

2016 ◽  
Vol 4 (19) ◽  
pp. 7135-7140 ◽  
Author(s):  
Jelena Popovic ◽  
George Hasegawa ◽  
Igor Moudrakovski ◽  
Joachim Maier
Keyword(s):  
Ionic Conductivity ◽  
Transference Number ◽  
High Density ◽  
Oh Groups ◽  
Porous Oxide ◽  
First Time ◽  
Very High

We show for the first time that liquid–solid lithium electrolytes can exhibit both a very high lithium transference number (up to 0.89) and high overall ionic conductivity (up to 0.48 mS cm−1) when the solid contains a large number of mesopores covered by a high density of –OH groups enabling anionic adsorption.

Solvothermal synthesis high lithium ionic conductivity of Gd-doped Li1.3 Al0.3Ti1.7(PO4)3 solid electrolyte

2021 ◽  
pp. 2140002
Author(s):  
Mingxia Fan ◽  
Xiangyu Deng ◽  
Anqiao Zheng ◽  
Songdong Yuan
Keyword(s):  
Ionic Conductivity ◽  
Solid Electrolyte ◽  
Solid Electrolytes ◽  
Room Temperature ◽  
Lithium Ion ◽  
High Ionic Conductivity ◽  
Doping Content ◽  
First Time ◽  
Maximum Content ◽  
Material Price

NASICON-type Li[Formula: see text]Al[Formula: see text]Ti[Formula: see text](PO[Formula: see text] (LATP) solid electrolytes have been widely studied because of its stability in the air, low material price and high ionic conductivity. Gd-doped Li[Formula: see text]Al[Formula: see text]Gd[Formula: see text]Ti[Formula: see text](PO[Formula: see text] ([Formula: see text]= 0, 0.025, 0.05, 0.075 and 0.1) with high ionic conductivity was successfully synthesized by solvothermal method for the first time in this work. The effect of Gd doping content on the structure and electrochemical performance of solid electrolytes was systematically studied. The optimal doping content of Gd is [Formula: see text]= 0.075. With the Gd doping content of 0.075, the solid electrolyte has the highest ionic conductivity of 4.23 × 10[Formula: see text] S cm[Formula: see text] at room temperature, the lowest activation energy of 0.247 eV and the highest relative density of 94.89%. This is because the fact that when [Formula: see text]= 0.075, it is the maximum content of Gd[Formula: see text] to replace Al[Formula: see text] and can completely enter the lattice of LATP, and does not emerge too much non-lithium ion conductive GdPO4 phase.

scholarly journals Lithium cation conducting TDI anion-based ionic liquids

2014 ◽  
Vol 16 (23) ◽  
pp. 11417-11425 ◽  
Author(s):  
Leszek Niedzicki ◽  
Ewelina Karpierz ◽  
Maciej Zawadzki ◽  
Maciej Dranka ◽  
Marta Kasprzyk ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Ionic Conductivity ◽  
Transference Number ◽  
High Ionic Conductivity ◽  
Lithium Cation

LiTDI salt in TDI-imidazole ionic liquids tested as lithium electrolytes shown high ionic conductivity and high lithium transference number.

X-ray characterization of the new nasicon compositions Na3Zr2−x/4Si2−xP1+xO12 with x=0.333, 0.667, 1.000, 1.333, 1.667

1997 ◽  
Vol 12 (3) ◽  
pp. 171-174 ◽  
Author(s):  
M. Lucco-Borlera ◽  
D. Mazza ◽  
L. Montanaro ◽  
A. Negro ◽  
S. Ronchetti
Keyword(s):  
Ionic Conductivity ◽  
Solid Electrolytes ◽  
High Ionic Conductivity ◽  
Constant Number ◽  
Nasicon Structure ◽  
Ionic Conductors ◽  
X Ray ◽  
Octahedral Sites ◽  
First Time

It is known that solids with composition Na3Zr2Si2PO12 heated at 1200 °C crystallize in the nasicon structure. This material shows a high ionic conductivity that represents an interesting improvement in the field of solid electrolytes. Our experimental results allow to establish for the first time that nasicon structures are stable along the compositional join Na3Zr2−x/4Si2−xP1+xO12 with x extending from 0 to 1.667. These structures are characterized by a Zr underoccupation of octahedral sites and a constant number of Na+ ions. This fact envisages a possible application of these materials in the field of ceramic sensors and ionic conductors.

scholarly journals Designing and Synthesis of (Cd2+, Li+), Cr3+, Bi3+ Doped CePO4 Materials Optical, Electrochemical, Ionic Conductivity Analysis

2020 ◽  
Author(s):  
Salah Kouass ◽  
Amor Fadhalaoui ◽  
Hassouna Dhaouadi ◽  
Fathi Touati
Keyword(s):  
Ionic Conductivity ◽  
Metal Ion ◽  
Energy Gap ◽  
Cycling Performance ◽  
Total Conductivity ◽  
Electrochemical Tests ◽  
Total Electrical Conductivity ◽  
Ion Doping ◽  
Different Temperatures ◽  
First Time

Most of the work has been done on the optical properties of the rare earth doped CePO4, so there are few studies on the effect of metal ion doping on CePO4. The doping improves the properties of the compounds and can lead to new properties. It is the first time, that multi- ionic doping process is used in the CePO4matrix, in order to improve the ionic conductivity and the electrochemical stability. The low percentage of (Cd2+, Li+), Cr3+, Bi3+ dopant affect the structure showing a weak decrease in the lattice parameters compared to the CePO4. Impedance spectroscopy analysis was used to analyze the electrical behavior of samples as a function of frequency at different temperatures. The total electrical conductivity plots obtained from impedance spectra shows an increase of the total conductivity as Li, Cr-content increases. The determined energy gap values decrease with increasingly Li+, Cr3+ and Bi3+ doping content. Electrochemical tests showed an improved capacity when increasing the Li+, Cr3+ and Bi3+ content and a stable cycling performance.

Defect-Mediated Conductivity Enhancements in Na3-xPn1-xWxS4 (Pn = P, Sb) using Aliovalent Substitutions

2019 ◽  
Author(s):  
Till Fuchs ◽  
Sean Culver ◽  
Paul Till ◽  
Wolfgang Zeier
Keyword(s):  
Ionic Conductivity ◽  
Vacancy Concentration ◽  
Sodium Ion ◽  
High Ionic Conductivity ◽  
Ionic Conductors ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solid State Batteries ◽  
Ion Conducting ◽  
Very High

<p>The sodium-ion conducting family of Na<sub>3</sub><i>Pn</i>S<sub>4</sub>, with <i>Pn</i> = P, Sb, have gained interest for the use in solid-state batteries due to their high ionic conductivity. However, significant improvements to the conductivity have been hampered by the lack of aliovalent dopants that can introduce vacancies into the structure. Inspired by the need for vacancy introduction into Na<sub>3</sub><i>Pn</i>S<sub>4</sub>, the solid solutions with WS<sub>4</sub><sup>2-</sup> introduction are explored. The influence of the substitution with WS<sub>4</sub><sup>2-</sup> for PS<sub>4</sub><sup>3-</sup> and SbS<sub>4</sub><sup>3-</sup>, respectively, is monitored using a combination of X-ray diffraction, Raman and impedance spectroscopy. With increasing vacancy concentration improvements resulting in a very high ionic conductivity of 13 ± 3 mS·cm<sup>-1</sup> for Na<sub>2.9</sub>P<sub>0.9</sub>W<sub>0.1</sub>S<sub>4</sub> and 41 ± 8 mS·cm<sup>-1</sup> for Na<sub>2.9</sub>Sb<sub>0.9</sub>W<sub>0.1</sub>S<sub>4</sub> can be observed. This work acts as a stepping-stone towards further engineering of ionic conductors using vacancy-injection via aliovalent substituents.</p>

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