Dual Polymer/Liquid Electrolyte with BaTiO3 Electrode for Magnesium Batteries

2020 ◽  
Vol 3 (6) ◽  
pp. 5882-5892
Author(s):  
Eslam Sheha ◽  
Fanfan Liu ◽  
Tiantian Wang ◽  
Mohamed Farrag ◽  
Junnan Liu ◽  
...  
Keyword(s):  
Liquid Electrolyte ◽  
Polymer Liquid ◽  
Magnesium Batteries

scholarly journals A Zwitterionic Liquid Electrolyte for Magnesium Batteries

2019 ◽  
Vol 2 (3) ◽  
pp. 223-228 ◽  
Author(s):  
Steffen Tröger‐Müller ◽  
Clemens Liedel
Keyword(s):  
Liquid Electrolyte ◽  
Magnesium Batteries

Statistical mechanics of defects in polymer liquid crystals

1992 ◽  
Vol 2 (5) ◽  
pp. 1215-1236 ◽  
Author(s):  
Jonathan V. Selinger ◽  
Robijn F. Bruinsma
Keyword(s):  
Liquid Crystals ◽  
Statistical Mechanics ◽  
Polymer Liquid ◽  
Polymer Liquid Crystals

Intensification of Extraction of Thermolabile Organic Polymers into a Liquid Electrolyte

1998 ◽  
Vol 29 (1-3) ◽  
pp. 140-145
Author(s):  
R. Sh. Vainberg ◽  
S. A. Bogdanov ◽  
N. D. Butskii
Keyword(s):  
Liquid Electrolyte ◽  
Organic Polymers

Enhanced Ion Transport in an Ether Aided Super Concentrated Ionic Liquid Electrolyte for Long-Life Practical Lithium Metal Battery Applications

2020 ◽  
Author(s):  
Urbi Pal ◽  
Fangfang Chen ◽  
Derick Gyabang ◽  
Thushan Pathirana ◽  
Binayak Roy ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ion Transport ◽  
Current Density ◽  
Coulombic Efficiency ◽  
High Energy ◽  
Liquid Electrolyte ◽  
High Mass ◽  
Lithium Metal ◽  
Ionic Liquid Electrolyte ◽  
Lithium Metal Battery

We explore a novel ether aided superconcentrated ionic liquid electrolyte; a combination of ionic liquid, <i>N</i>-propyl-<i>N</i>-methylpyrrolidinium bis(fluorosulfonyl)imide (C<sub>3</sub>mpyrFSI) and ether solvent, <i>1,2</i> dimethoxy ethane (DME) with 3.2 mol/kg LiFSI salt, which offers an alternative ion-transport mechanism and improves the overall fluidity of the electrolyte. The molecular dynamics (MD) study reveals that the coordination environment of lithium in the ether aided ionic liquid system offers a coexistence of both the ether DME and FSI anion simultaneously and the absence of ‘free’, uncoordinated DME solvent. These structures lead to very fast kinetics and improved current density for lithium deposition-dissolution processes. Hence the electrolyte is used in a lithium metal battery against a high mass loading (~12 mg/cm<sup>2</sup>) LFP cathode which was cycled at a relatively high current rate of 1mA/cm<sup>2</sup> for 350 cycles without capacity fading and offered an overall coulombic efficiency of >99.8 %. Additionally, the rate performance demonstrated that this electrolyte is capable of passing current density as high as 7mA/cm<sup>2</sup> without any electrolytic decomposition and offers a superior capacity retention. We have also demonstrated an ‘anode free’ LFP-Cu cell which was cycled over 50 cycles and achieved an average coulombic efficiency of 98.74%. The coordination chemistry and (electro)chemical understanding as well as the excellent cycling stability collectively leads toward a breakthrough in realizing the practical applicability of this ether aided ionic liquid electrolytes in lithium metal battery applications, while delivering high energy density in a prototype cell.

scholarly journals An Overview on Anodes for Magnesium Batteries: Challenges towards a Promising Storage Solution for Renewables

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 810
Author(s):  
Federico Bella ◽  
Stefano De Luca ◽  
Lucia Fagiolari ◽  
Daniele Versaci ◽  
Julia Amici ◽  
...  
Keyword(s):  
Reduction Potential ◽  
Literature Analysis ◽  
Organic Electrolytes ◽  
Boron Clusters ◽  
Passivation Film ◽  
Metallic Magnesium ◽  
Passivation Layers ◽  
Magnesium Batteries ◽  
Nanostructured Metal Oxides ◽  
Nanostructured Metal

Magnesium-based batteries represent one of the successfully emerging electrochemical energy storage chemistries, mainly due to the high theoretical volumetric capacity of metallic magnesium (i.e., 3833 mAh cm−3 vs. 2046 mAh cm−3 for lithium), its low reduction potential (−2.37 V vs. SHE), abundance in the Earth’s crust (104 times higher than that of lithium) and dendrite-free behaviour when used as an anode during cycling. However, Mg deposition and dissolution processes in polar organic electrolytes lead to the formation of a passivation film bearing an insulating effect towards Mg2+ ions. Several strategies to overcome this drawback have been recently proposed, keeping as a main goal that of reducing the formation of such passivation layers and improving the magnesium-related kinetics. This manuscript offers a literature analysis on this topic, starting with a rapid overview on magnesium batteries as a feasible strategy for storing electricity coming from renewables, and then addressing the most relevant outcomes in the field of anodic materials (i.e., metallic magnesium, bismuth-, titanium- and tin-based electrodes, biphasic alloys, nanostructured metal oxides, boron clusters, graphene-based electrodes, etc.).

scholarly journals Probing the Na metal solid electrolyte interphase via cryo-transmission electron microscopy

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Bing Han ◽  
Yucheng Zou ◽  
Zhen Zhang ◽  
Xuming Yang ◽  
Xiaobo Shi ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Solid Electrolyte ◽  
Solid Electrolyte Interphase ◽  
Metal Electrode ◽  
Liquid Electrolyte ◽  
Battery Materials ◽  
Cryogenic Transmission Electron Microscopy ◽  
Transmission Electron ◽  
Fluoroethylene Carbonate

AbstractCryogenic transmission electron microscopy (cryo-TEM) is a valuable tool recently proposed to investigate battery electrodes. Despite being employed for Li-based battery materials, cryo-TEM measurements for Na-based electrochemical energy storage systems are not commonly reported. In particular, elucidating the chemical and morphological behavior of the Na-metal electrode in contact with a non-aqueous liquid electrolyte solution could provide useful insights that may lead to a better understanding of metal cells during operation. Here, using cryo-TEM, we investigate the effect of fluoroethylene carbonate (FEC) additive on the solid electrolyte interphase (SEI) structure of a Na-metal electrode. Without FEC, the NaPF6-containing carbonate-based electrolyte reacts with the metal electrode to produce an unstable SEI, rich in Na2CO3 and Na3PO4, which constantly consumes the sodium reservoir of the cell during cycling. When FEC is used, the Na-metal electrode forms a multilayer SEI structure comprising an outer NaF-rich amorphous phase and an inner Na3PO4 phase. This layered structure stabilizes the SEI and prevents further reactions between the electrolyte and the Na metal.

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