scholarly journals Electrorefining of aluminum alloy in ionic liquids at low temperatures

2003 ◽  
Vol 39 (1-2) ◽  
pp. 43-58 ◽  
Author(s):  
V. Kamavaram ◽  
D. Mantha ◽  
R.G. Reddy
Keyword(s):  
Aluminum Alloy ◽  
Ionic Liquids ◽  
Energy Consumption ◽  
Low Temperatures ◽  
Cell Voltage ◽  
Liquid Electrolyte ◽  
X Ray ◽  
Ionic Liquid Electrolyte ◽  
Anhydrous Alcl3 ◽  
Xrd Techniques

The electrorefining of aluminum alloy (A360) in ionic liquids at low temperatures has been investigated. The ionic liquid electrolyte was prepared by mixing anhydrous AlCl3 and 1-Butyl-3- methylimidazolium chloride (BMIC) in appropriate proportions. The effect of the cell voltage temperature, and the composition of the electrolyte on the electrorefining process has been studied. The characterization of the deposited aluminum was performed using scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques. The influence of experimental parameters such as cell voltage and concentration of AlCl3 in the electrolyte on the deposit morphology was discussed. The composition of the aluminum deposits was analyzed using X-ray fluorescence spectrometer (XRF). Aluminum deposits with purity higher than 99.89 % were obtained. At a cell voltage of 1.0 V vs. Al/Al(III), the energy consumption was about 3 kWh/kg-Al. The main advantage of the process is low energy consumption compared to the existing industrial aluminum refining process.

FEC-LiTFSI-Pyr1ATFSI Ionic Liquid Electrolyte to Improve Low Temperature Performance of Lithium-Ion Batteries

2014 ◽  
Vol 986-987 ◽  
pp. 80-83
Author(s):  
Xiao Xue Zhang ◽  
Zhen Feng Wang ◽  
Cui Hua Li ◽  
Jian Hong Liu ◽  
Qian Ling Zhang
Keyword(s):  
Low Temperature ◽  
Lithium Ion Batteries ◽  
Low Temperatures ◽  
Freezing Point ◽  
Lithium Ion ◽  
Liquid Electrolyte ◽  
Capacity Retention ◽  
Composite Electrolyte ◽  
Ionic Liquid Electrolyte ◽  
Fluoroethylene Carbonate

N-methyl-N-allylpyrrolidinium bis (trifluoromethanesulfonyl) imide (PYR1ATFSI) with substantial supercooling behavior is synthesized to develop low temperature electrolyte for lithium-ion batteries. Additive fluoroethylene carbonate (FEC) in LiTFSI/PYR1ATFSI/EC/PC/EMC is found that it can reduce the freezing point. LiFePO4/Li coin cells with the FEC-PYR1ATFSI electrolyte exhibit good capacity retention, reversible cycling behavior at low temperatures. The good performance can be attributed to the decrease in the freezing point and the polarization of the composite electrolyte.

In situ X-ray spectromicroscopy study of bipolar plate material stability for nano-fuel-cells with ionic-liquid electrolyte

2011 ◽  
Vol 88 (8) ◽  
pp. 2456-2458 ◽  
Author(s):  
Benedetto Bozzini ◽  
Claudio Mele ◽  
Alessandra Gianoncelli ◽  
Burkhard Kaulich ◽  
Maya Kiskinova ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Fuel Cells ◽  
Bipolar Plate ◽  
Liquid Electrolyte ◽  
Plate Material ◽  
X Ray ◽  
Ionic Liquid Electrolyte ◽  
Material Stability

On the measurement of intermolecular heteronuclear cross relaxation rates in ionic liquids

2018 ◽  
Vol 20 (19) ◽  
pp. 13357-13364 ◽  
Author(s):  
Pierre-Alexandre Martin ◽  
Elodie Salager ◽  
Maria Forsyth ◽  
Luke A. O’Dell ◽  
Michaël Deschamps
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Liquid Electrolyte ◽  
Cross Relaxation ◽  
Relaxation Rates ◽  
Ionic Liquid Electrolyte

Intermolecular cross relaxation rates are measured in an ionic liquid electrolyte and interpreted in terms of closest distances between cations.

scholarly journals Ordered LiNi0.5Mn1.5O4 Cathode in Bis(fluorosulfonyl)imide-Based Ionic Liquid Electrolyte: Importance of the Cathode-Electrolyte Interphase

2020 ◽  
Author(s):  
Hyeon Jeong Lee ◽  
Zachary Brown ◽  
Ying Zhao ◽  
Jack Fawdon ◽  
Weixin Song ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
High Voltage ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycling Performance ◽  
High Energy ◽  
Liquid Electrolyte ◽  
High Energy Density ◽  
X Ray ◽  
Ionic Liquid Electrolyte

<div><div><div><p>The high voltage (4.7 V vs. Li+ /Li) spinel lithium nickel manganese oxide (LiNi0.5 Mn1.5 O4 , LNMO) is a promising candidate for the next-generation of lithium ion batteries due to its high energy density, low cost and environmental impact. However, poor cycling performance at high cutoff potentials limits its commercialization. Herein, hollow structured LNMO is synergistically paired with an ionic liquid electrolyte, 1M lithium bis(fluorosulfonyl)imide (LiFSI) in N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide (Pyr1,3 FSI) to achieve stable cycling performance and improved rate capability. The optimized cathode-electrolyte system exhibits extended cycling performance (>85% capacity retention after 300 cycles) and high rate performance (106.2mAhg–1 at 5C) even at an elevated temperature of 65 ◦C. X-ray photoelectron spectroscopy and spatially resolved x-ray fluorescence analyses confirm the formation of a robust, LiF-rich cathode electrolyte interphase. This study presents a comprehensive design strategy to improve the electrochemical performance of high-voltage cathode materials.</p></div></div></div>

scholarly journals Electrochemical and in-situ X-ray diffraction studies of Ti 3 C 2 T x MXene in ionic liquid electrolyte

2016 ◽  
Vol 72 ◽  
pp. 50-53 ◽  
Author(s):  
Zifeng Lin ◽  
Patrick Rozier ◽  
Benjamin Duployer ◽  
Pierre-Louis Taberna ◽  
Babak Anasori ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Liquid Electrolyte ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ionic Liquid Electrolyte

Enhancing 5 V capacitor performance by adding single walled carbon nanotubes into an ionic liquid electrolyte

2015 ◽  
Vol 3 (31) ◽  
pp. 15858-15862 ◽  
Author(s):  
Chuiyan Kong ◽  
Weizhong Qian ◽  
Chao Zheng ◽  
Wei Fei
Keyword(s):  
Carbon Nanotubes ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Energy Density ◽  
Power Density ◽  
Single Walled Carbon Nanotubes ◽  
Liquid Electrolyte ◽  
Ionic Liquid Electrolyte ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

A nanofluid electrolyte of single walled carbon nanotubes and ionic liquids enhances the energy density, power density and cycling stability of nanotube electrodes at 5 V.

scholarly journals Ordered LiNi0.5Mn1.5O4 Cathode in Bis(fluorosulfonyl)imide-Based Ionic Liquid Electrolyte: Importance of the Cathode-Electrolyte Interphase

2020 ◽  
Author(s):  
Hyeon Jeong Lee ◽  
Zachary Brown ◽  
Ying Zhao ◽  
Jack Fawdon ◽  
Weixin Song ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
High Voltage ◽  
Rate Capability ◽  
Lithium Ion ◽  
Cycling Performance ◽  
High Energy ◽  
Liquid Electrolyte ◽  
High Energy Density ◽  
X Ray ◽  
Ionic Liquid Electrolyte

<div><div><div><p>The high voltage (4.7 V vs. Li+ /Li) spinel lithium nickel manganese oxide (LiNi0.5 Mn1.5 O4 , LNMO) is a promising candidate for the next-generation of lithium ion batteries due to its high energy density, low cost and environmental impact. However, poor cycling performance at high cutoff potentials limits its commercialization. Herein, hollow structured LNMO is synergistically paired with an ionic liquid electrolyte, 1M lithium bis(fluorosulfonyl)imide (LiFSI) in N-propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide (Pyr1,3 FSI) to achieve stable cycling performance and improved rate capability. The optimized cathode-electrolyte system exhibits extended cycling performance (>85% capacity retention after 300 cycles) and high rate performance (106.2mAhg–1 at 5C) even at an elevated temperature of 65 ◦C. X-ray photoelectron spectroscopy and spatially resolved x-ray fluorescence analyses confirm the formation of a robust, LiF-rich cathode electrolyte interphase. This study presents a comprehensive design strategy to improve the electrochemical performance of high-voltage cathode materials.</p></div></div></div>

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