Covalent Organic Frameworks-Enhanced Ionic Conductivity of Polymeric Ionic Liquid-Based Ionic Gel Electrolyte for Lithium Metal Battery

2021 ◽  
Author(s):  
Zhennan Wang ◽  
Weizhong Zheng ◽  
Weizhen Sun ◽  
Ling Zhao ◽  
Weikang Yuan
Keyword(s):  
Ionic Liquid ◽  
Ionic Conductivity ◽  
Gel Electrolyte ◽  
Covalent Organic Frameworks ◽  
Lithium Metal ◽  
Polymeric Ionic Liquid ◽  
Lithium Metal Battery

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.

High-performance polymeric ionic liquid–silica hybrid ionogel electrolytes for lithium metal batteries

2016 ◽  
Vol 4 (36) ◽  
pp. 13822-13829 ◽  
Author(s):  
Xiaowei Li ◽  
Sijian Li ◽  
Zhengxi Zhang ◽  
Jun Huang ◽  
Li Yang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Solid State ◽  
High Performance ◽  
High Capacity ◽  
Electrochemical Stability ◽  
Rate Performance ◽  
Lithium Metal ◽  
Polymeric Ionic Liquid ◽  
Lithium Metal Batteries ◽  
Silica Hybrid

Hybrid ionogel electrolytes have high thermal and electrochemical stability, good ionic conductivity, and potential to suppress Li dendrite formation. Solid-state lithium metal batteries with hybrid electrolytes reveal high capacity and remarkable rate performance.

Enabling polymeric ionic liquid electrolytes with high ambient ionic conductivity by polymer chain regulation

2021 ◽  
pp. 133278
Author(s):  
Daosong Fu ◽  
Yiyang Sun ◽  
Fengrui Zhang ◽  
Zhengguang Sun ◽  
Wanfei Li ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Conductivity ◽  
Polymer Chain ◽  
Polymeric Ionic Liquid ◽  
Liquid Electrolytes

Synthesis and optimization of new polymeric ionic liquid poly(diallydimethylammonium) bis(trifluoromethane sulfonyl)imde based gel electrolyte films

2018 ◽  
Vol 43 (7) ◽  
pp. 3741-3749 ◽  
Author(s):  
Xingcheng Hu ◽  
Ravi Muchakayala ◽  
Shenhua Song ◽  
Jingwei Wang ◽  
Jianjun Chen ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Gel Electrolyte ◽  
Polymeric Ionic Liquid

scholarly journals Light‐Controllable Ionic Conductivity in a Polymeric Ionic Liquid

2020 ◽  
Vol 59 (13) ◽  
pp. 5123-5128 ◽  
Author(s):  
Hui Nie ◽  
Nicole S. Schauser ◽  
Neil D. Dolinski ◽  
Jerry Hu ◽  
Craig J. Hawker ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Conductivity ◽  
Polymeric Ionic Liquid
Sign in / Sign up

Export Citation Format

Share Document