Thermal Stability of Pyrrolidinium-FSI Ionic Liquid Electrolyte and Lithium-Ion Electrodes at Elevated Temperatures

2018 ◽  
Vol 165 (7) ◽  
pp. A1204-A1221 ◽  
Author(s):  
Candice Francis ◽  
Rosalie Louey ◽  
Karl Sammut ◽  
Adam S. Best
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Elevated Temperatures ◽  
Lithium Ion ◽  
Liquid Electrolyte ◽  
Ionic Liquid Electrolyte ◽  
Thermal Stability Of

scholarly journals Hybrid Li/Na Ion Batteries: Temperature-Induced Reactivity of Three-Layered Oxide (P3-Na2/3Ni1/3Mg1/6Mn1/2O2) Toward Lithium Ionic Liquid Electrolytes

2020 ◽  
Vol 8 ◽  
Author(s):  
Mariya Kalapsazova ◽  
Krassimir Kostov ◽  
Ekaterina Zhecheva ◽  
Radostina Stoyanova
Keyword(s):  
Ionic Liquid ◽  
Photoelectron Spectroscopy ◽  
Metal Ion ◽  
Elevated Temperatures ◽  
Lithium Ion ◽  
Liquid Electrolyte ◽  
Ex Situ ◽  
X Ray ◽  
Layered Oxide ◽  
Ionic Liquid Electrolyte

Hybrid metal ion batteries are perceived as competitive alternatives to lithium ion batteries because they provide better balance between energy/power density, battery cost, and environmental requirements. However, their cycling stability and high-temperature storage performance are still far from the desired. Herein, we first examine the temperature-induced reactivity of three-layered oxide, P3-Na2/3Ni1/3Mg1/6Mn1/2O2, toward lithium ionic liquid electrolyte upon cycling in hybrid Li/Na ion cells. Through ex situ X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses, the structural and surface changes in P3-Na2/3Ni1/3Mg1/6Mn1/2O2 are monitored and discussed. Understanding the relevant changes occurring during dual Li+ and Na+ intercalation into P3-Na2/3Ni1/3Mg1/6Mn1/2O2 is of crucial importance to enhance the overall performance of hybrid Li/Na ion batteries at elevated temperatures.

A novel boron-based ionic liquid electrolyte for high voltage lithium-ion batteries with outstanding cycling stability

2018 ◽  
Vol 283 ◽  
pp. 111-120 ◽  
Author(s):  
Fuxiao Liang ◽  
Jiali Yu ◽  
Jiahui Chen ◽  
Dong Wang ◽  
Chengdong Lin ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Lithium Ion Batteries ◽  
High Voltage ◽  
Lithium Ion ◽  
Liquid Electrolyte ◽  
Cycling Stability ◽  
Ionic Liquid Electrolyte

Elevated Temperature Lithium-Ion Batteries Containing SnO2Electrodes and LiTFSI-Pip14TFSI Ionic Liquid Electrolyte

2017 ◽  
Vol 164 (4) ◽  
pp. A701-A708 ◽  
Author(s):  
Solveig Böhme ◽  
Manfred Kerner ◽  
Johan Scheers ◽  
Patrik Johansson ◽  
Kristina Edström ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Elevated Temperature ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Liquid Electrolyte ◽  
Ionic Liquid Electrolyte

Symmetric lithium-ion cell based on lithium vanadium fluorophosphate with ionic liquid electrolyte

2011 ◽  
Vol 56 (3) ◽  
pp. 1344-1351 ◽  
Author(s):  
Larisa S. Plashnitsa ◽  
Eiji Kobayashi ◽  
Shigeto Okada ◽  
Jun-ichi Yamaki
Keyword(s):  
Ionic Liquid ◽  
Lithium Ion ◽  
Liquid Electrolyte ◽  
Ionic Liquid Electrolyte ◽  
Lithium Ion Cell

scholarly journals Improving Cycle Life Through Fast Formation Using a Super-Concentrated Phosphonium Based Ionic Liquid Electrolyte for Anode-Free and Lithium Metal Batteries

2021 ◽  
Author(s):  
Thushan Pathirana ◽  
Dmitrii Rakov ◽  
Fangfang Chen ◽  
Maria Forsyth ◽  
Robert Kerr ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Energy Density ◽  
Electrochemical Impedance ◽  
Cell Formation ◽  
Lithium Ion ◽  
High Energy ◽  
Liquid Electrolyte ◽  
High Energy Density ◽  
Lithium Metal ◽  
Ionic Liquid Electrolyte

<p>ABSTRACT </p><p>Cell formation of lithium-ion cells impacts the evolution of the solid electrolyte interphase (SEI) and the cell cycle stability. Lithium metal anodes are an important step in the development of high energy density batteries owing to the high theoretical specific capacity of lithium metal. However, most lithium metal battery research has used a conventional lithium-ion formation protocol; this is time consuming, costly and does not account for the different properties of the lithium metal electrode. Here, we have used a recently reported promising phosphonium bis(fluorosulfonyl)imide ionic liquid electrolyte coupled with an NMC622 high areal capacity cathode (>3.5 mAh/cm2) to investigate the effect of cell formation rates. A faster formation protocol comprised of a pulsed 1.25C current decreased the formation time by 56 % and gave a 38 % greater capacity retention after 50 cycles when compared to formation at C/20. Electrochemical impedance spectroscopy measurements showed that the fast formation gave rise to a lower-resistance SEI. Column-like lithium deposits with reduced porous lithium domains between the particles were observed using scanning electron microscope imaging. To underline the excellent performance of these high energy-density cells, a 56 % greater stack specific energy was achieved compared to the analogous graphite-based lithium-ion cell chemistries. </p>

Sign in / Sign up

Export Citation Format

Share Document