Rational Design of an Ionic Liquid‐Based Electrolyte with High Ionic Conductivity Towards Safe Lithium/Lithium‐Ion Batteries

2019 ◽  
Author(s):  
Shengjie Zhang ◽  
Junhao Li ◽  
Ningyi Jiang ◽  
Xuqiu Li ◽  
Sivakumar Pasupath ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Conductivity ◽  
Lithium Ion Batteries ◽  
Rational Design ◽  
Lithium Ion ◽  
High Ionic Conductivity

scholarly journals Dielectric and impedance analysis of Li0.5La0.5Ti1-xZrxO3(x = 0.05 and 0.1) ceramics as improved electrolyte material for lithium-ion batteries

2016 ◽  
Vol 34 (3) ◽  
pp. 605-616 ◽  
Author(s):  
K. Vijaya Babu ◽  
V. Veeraiah
Keyword(s):  
Ionic Conductivity ◽  
Lithium Ion Batteries ◽  
Electric Modulus ◽  
Lithium Ion ◽  
Impedance Analysis ◽  
Solid State Reaction Method ◽  
High Ionic Conductivity ◽  
Conductivity Relaxation ◽  
Reaction Method ◽  
X Ray

AbstractThe most attractive property of Li0.5La0.5TiO3 (LLTO) electrolytes is their high ionic conductivity. Studies have shown that LLTO is capable of existing in a state with an ionic conductivity of 10-3 S/cm, which is comparable to liquid electrolytes. In addition to the high ionic conductivity of the material, LLTO is electrochemically stable and able to withstand hundreds of cycles. So, the studies of the solid electrolyte material are very important for the development of lithium-ion batteries. In the present paper, Li0.5La0.5Ti1-xZrxO3 (x = 0.05 and 0.1) have been prepared by a solid-state reaction method at 1300 °C for 6 hours to improve electrolyte materials for lithium-ion batteries. The phase identified by X-ray diffractometry and crystal structure corresponds to pm3m (2 2 1) space group (Z = 1). The frequency and temperature dependence of impedance, dielectric permittivity, dielectric loss and electric modulus of the Li0.5La0.5Ti1-xZrxO3 (x = 0.05 and 0.1) have been investigated. The dielectric and impedance properties have been studied over a range of frequency (42 Hz to 5 MHz) and temperatures (30 °C to 100 °C). The frequency dependent plot of modulus shows that the conductivity relaxation is of non-Debye type.

scholarly journals The Use of Succinonitrile as an Electrolyte Additive for Composite-Fiber Membranes in Lithium-Ion Batteries

Membranes ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 45 ◽  
Author(s):  
Jahaziel Villarreal ◽  
Roberto Orrostieta Chavez ◽  
Sujay A. Chopade ◽  
Timothy P. Lodge ◽  
Mataz Alcoutlabi
Keyword(s):  
Ionic Liquid ◽  
Ionic Conductivity ◽  
Lithium Ion Batteries ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Composite Fiber ◽  
Galvanostatic Charge ◽  
Lithium Anode ◽  
Charge Discharge ◽  
Licoo2 Cathode

In the present work, the effect of temperature and additives on the ionic conductivity of mixed organic/ionic liquid electrolytes (MOILEs) was investigated by conducting galvanostatic charge/discharge and ionic conductivity experiments. The mixed electrolyte is based on the ionic liquid (IL) (EMI/TFSI/LiTFSI) and organic solvents EC/DMC (1:1 v/v). The effect of electrolyte type on the electrochemical performance of a LiCoO2 cathode and a SnO2/C composite anode in lithium anode (or cathode) half-cells was also investigated. The results demonstrated that the addition of 5 wt.% succinonitrile (SN) resulted in enhanced ionic conductivity of a 60% EMI-TFSI 40% EC/DMC MOILE from ~14 mS·cm−1 to ~26 mS·cm−1 at room temperature. Additionally, at a temperature of 100 °C, an increase in ionic conductivity from ~38 to ~69 mS·cm−1 was observed for the MOILE with 5 wt% SN. The improvement in the ionic conductivity is attributed to the high polarity of SN and its ability to dissolve various types of salts such as LiTFSI. The galvanostatic charge/discharge results showed that the LiCoO2 cathode with the MOILE (without SN) exhibited a 39% specific capacity loss at the 50th cycle while the LiCoO2 cathode in the MOILE with 5 wt.% SN showed a decrease in specific capacity of only 14%. The addition of 5 wt.% SN to the MOILE with a SnO2/C composite-fiber anode resulted in improved cycling performance and rate capability of the SnO2/C composite-membrane anode in lithium anode half-cells. Based on the results reported in this work, a new avenue and promising outcome for the future use of MOILEs with SN in lithium-ion batteries (LIBs) can be opened.

Preparation of a ROMP-type imidazolium-functionalized norbornene ionic liquid block copolymer and the electrochemical property for lithium-ion batteries polyelectrolyte membranes

RSC Advances ◽  
2015 ◽  
Vol 5 (54) ◽  
pp. 43581-43588 ◽  
Author(s):  
Juan Wang ◽  
Xiaohui He ◽  
Hongyu Zhu ◽  
Defu Chen
Keyword(s):  
Ionic Liquid ◽  
Block Copolymer ◽  
Ionic Conductivity ◽  
Lithium Ion Batteries ◽  
Electrochemical Property ◽  
Polymer Electrolytes ◽  
Lithium Ion ◽  
Solid Polymer Electrolytes ◽  
Solid Polymer ◽  
Polyelectrolyte Membranes

Solid polymer electrolytes with high ionic conductivity have been prepared based on an imidazolium-functionalized norbornene ionic liquid block copolymer.

Quasi-solid electrolyte developed on hierarchical rambutan-like γ-AlOOH microspheres with high ionic conductivity for lithium ion batteries

Nanoscale ◽  
2021 ◽  
Author(s):  
Mengmeng Gao ◽  
Xiaolei Wu ◽  
Shuhong Yi ◽  
Shuwei Sun ◽  
Caiyan Yu ◽  
...  
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Solid Electrolyte ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Ionic Conductivity ◽  
Liquid Lithium ◽  
Liquid Electrolytes ◽  
Solid State Batteries ◽  
Solid State Electrolytes

Upgrading liquid electrolytes with all-solid-state electrolytes (ASEs) or quasi-solid-state electrolytes (QSEs) for solid-state batteries (SBs) have emerged not only to address the intrinsic disadvantages of traditional liquid lithium ion batteries,...

A hybrid solid electrolyte Li0.33La0.557TiO3/poly(acylonitrile) membrane infiltrated with a succinonitrile-based electrolyte for solid state lithium-ion batteries

2020 ◽  
Vol 8 (2) ◽  
pp. 706-713 ◽  
Author(s):  
Jiaying Bi ◽  
Daobin Mu ◽  
Borong Wu ◽  
Jiale Fu ◽  
Hao Yang ◽  
...  
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Solid Electrolyte ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
High Ionic Conductivity ◽  
Lithium Anode ◽  
Electrolyte Membrane ◽  
Metallic Lithium

An LLTO/PAN/SNE hybrid solid electrolyte membrane with high ionic conductivity and excellent compatibility with both LiFePO4 cathode and metallic lithium anode.

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