Methylcellulose/Polymethyl Methacrylate/Al 2 O 3 Composite Polymer Matrix towards Ni‐Rich Cathode/Lithium Metal Battery

2021 ◽  
pp. 2100234
Author(s):  
Xun Zhang ◽  
Yiming Sun ◽  
Xiuping Yin ◽  
Yue Ma ◽  
Lianqi Zhang ◽  
...  
Keyword(s):  
Polymethyl Methacrylate ◽  
Polymer Matrix ◽  
Lithium Metal ◽  
Composite Polymer ◽  
Lithium Metal Battery

[BMIM]BF4-modified PVDF-HFP composite polymer electrolyte for high-performance solid-state lithium metal battery

2020 ◽  
Vol 8 (39) ◽  
pp. 20593-20603
Author(s):  
Kaixiong Huang ◽  
Yanyi Wang ◽  
Hongwei Mi ◽  
Dingtao Ma ◽  
Bo Yong ◽  
...  
Keyword(s):  
Solid State ◽  
Polymer Electrolyte ◽  
High Performance ◽  
Lithium Battery ◽  
Composite Polymer Electrolyte ◽  
Lithium Metal ◽  
Composite Polymer ◽  
Lithium Metal Battery

In this work, we demonstrated a novel non-flammable composite polymer electrolyte, which can be applied for high-performance solid-state lithium battery.

Stable interface of a high-energy solid-state lithium metal battery via a sandwich composite polymer electrolyte

2021 ◽  
Vol 496 ◽  
pp. 229835
Author(s):  
Boyu Li ◽  
Qingmei Su ◽  
Chengkun Liu ◽  
Qiushi Wang ◽  
Miao Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Polymer Electrolyte ◽  
High Energy ◽  
Sandwich Composite ◽  
Composite Polymer Electrolyte ◽  
Lithium Metal ◽  
Composite Polymer ◽  
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.

scholarly journals Excellent Performances of Composite Polymer Electrolytes with Porous Vinyl-Functionalized SiO2 Nanoparticles for Lithium Metal Batteries

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2468
Author(s):  
Hui Zhan ◽  
Mengjun Wu ◽  
Rui Wang ◽  
Shuohao Wu ◽  
Hao Li ◽  
...  
Keyword(s):  
Polymer Electrolytes ◽  
Specific Capacity ◽  
Sio2 Nanoparticles ◽  
Inorganic Materials ◽  
Solid Polymer Electrolytes ◽  
Lithium Metal ◽  
Composite Polymer ◽  
Composite Electrolyte ◽  
Composite Polymer Electrolytes ◽  
Lithium Metal Batteries

Composite polymer electrolytes (CPEs) incorporate the advantages of solid polymer electrolytes (SPEs) and inorganic solid electrolytes (ISEs), which have shown huge potential in the application of safe lithium-metal batteries (LMBs). Effectively avoiding the agglomeration of inorganic fillers in the polymer matrix during the organic–inorganic mixing process is very important for the properties of the composite electrolyte. Herein, a partial cross-linked PEO-based CPE was prepared by porous vinyl-functionalized silicon (p-V-SiO2) nanoparticles as fillers and poly (ethylene glycol diacrylate) (PEGDA) as cross-linkers. By combining the mechanical rigidity of ceramic fillers and the flexibility of PEO, the as-made electrolyte membranes had excellent mechanical properties. The big special surface area and pore volume of nanoparticles inhibited PEO recrystallization and promoted the dissolution of lithium salt. Chemical bonding improved the interfacial compatibility between organic and inorganic materials and facilitated the homogenization of lithium-ion flow. As a result, the symmetric Li|CPE|Li cells could operate stably over 450 h without a short circuit. All solid Li|LiFePO4 batteries were constructed with this composite electrolyte and showed excellent rate and cycling performances. The first discharge-specific capacity of the assembled battery was 155.1 mA h g−1, and the capacity retention was 91% after operating for 300 cycles at 0.5 C. These results demonstrated that the chemical grafting of porous inorganic materials and cross-linking polymerization can greatly improve the properties of CPEs.

Regulation of SEI Formation by Anion Receptors to Achieve Ultra‐Stable Lithium Metal Battery

2021 ◽  
Author(s):  
Kangsheng Huang ◽  
Sheng Bi ◽  
Barış Kurt ◽  
Chengyang Xu ◽  
Langyuan Wu ◽  
...  
Keyword(s):  
Anion Receptors ◽  
Lithium Metal ◽  
Lithium Metal Battery

Epitaxial Induced Plating Current‐Collector Lasting Lifespan of Anode‐Free Lithium Metal Battery

2021 ◽  
pp. 2003709
Author(s):  
Liangdong Lin ◽  
Liumin Suo ◽  
Yong‐sheng Hu ◽  
Hong Li ◽  
Xuejie Huang ◽  
...  
Keyword(s):  
Current Collector ◽  
Lithium Metal ◽  
Lithium Metal Battery
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